Relevant bibliographies by topics / Material joining

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Material joining'

Author: Grafiati
Published: 7 June 2025
Last updated: 16 July 2025

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Journal articles on the topic "Material joining"

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Nakazawa, Yasushi. "Dissimilar metal material joining by mechanical joining." Journal of Japan Institute of Light Metals 72, no. 1 (2022): 31–39. http://dx.doi.org/10.2464/jilm.72.31.

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Okada, Toshiya, Souhei Uchida, and Kazuhiro Nakata. "Direct Joining of Aluminum Alloy and Plastic Sheets by Friction Lap Processing." Materials Science Forum 794-796 (June 2014): 395–400. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.395.

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It was difficult to join dissimilar materials such as metallic material and polymer. Conventional joining processes of these materials were mechanical fastening, using adhesion, thermal pressing, laser welding and so on. These processes had disadvantages such as expensive apparatus, restriction of dimension of products and lack of anti-weather resistance.Friction Stir Welding (FSW), which was one of the solid state joinings, was available as a joining process for dissimilar metals. However, in case of joining metal and polymer, it was not available to use the tool for FSW. So we proposed Friction Lap Process to join a metallic material with a polymer and investigated mechanical and metallurgical properties of this dissimilar joint. Itwas described in this paper that joining mechanism is discussed with evaluation of microstructure at the interface between aluminum alloy and polymer. High density polyethylene was not able to be joined for as received aluminum alloy. Anodizing was effective to join with these materials.
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Ohashi, Takahiro, Tadashi Nishihara, and Hamed Mofidi Tabatabaei. "Mechanical Joining Utilizing Friction Stir Forming." Materials Science Forum 1016 (January 2021): 1058–64. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.1058.

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It is expected that the material ratio of steel for an automobile will decrease rapidly in next decade due to the rise of electric vehicles, and multi-materialization of parts will be promoted consequently. Hence, technologies for dissimilar materials joining have been studied by researchers successfully for recent years. The authors have studied dissimilar materials joining with utilizing friction-stir forming (FSF) approach. The FSF is a friction-stir process invented by Nishihara in 2002. In FSF, a substrate material was put on a die firstly. Next, friction stirring was conducted on the back surface of the material. The material then deformed and filled the cavity of the die due to high pressure and heat caused by the friction stirring. The authors utilized the FSF approach to generate mechanical joints between dissimilar materials. In this presentation, the author introduces various techniques for joining dissimilar materials with employing the FSF.
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Veenaas, Stefan, and Frank Vollertsen. "Mechanical Joining of Glass and Aluminium." Key Engineering Materials 767 (April 2018): 369–76. http://dx.doi.org/10.4028/www.scientific.net/kem.767.369.

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The ongoing trend of miniaturization and increasing function integration makes it necessary to join different sheet materials in the micro range. Conventional joining processes cannot be scaled down to smaller dimension due to so called size effects. Thermal based joining processes, like welding or brazing can lead to distortion, which are more critical in the micro range. Normally ceramic materials can only be joined using extra joining elements like glue or bolts. Laser shock joining is a promising mechanical joining process for delicate material combinations. This process usesTEA-CO2-laser induced shockwaves. Several pulses are applied at one point to achieve high forming degrees without increasing the energy density beyond the ablation limit. The laser irradiates on the forming sheet and creates a plasma plume above the surface, which leads to a shockwave. This shockwave pushes the material in the joining area and creates an undercut which presents the joint itself. The laser induced shockwave is used to create an undercut underneath the other material. The form closure between the two materials enables a joint. So far, investigations were performed to identify the process window and the joining strength for aluminum and steel joints. The influence of die sheet materials is negligible, so that this process can be used for joining of dissimilar materials like aluminum and glass. Therefore, in this paper the suitability of this process for the mechanical joining of aluminum and glass is investigated. It is found that the tools need to be adjusted for the joining process. It is shown that a mechanical joining of aluminum and glass is possible. The joining strength is 53% of the theoretical maximum of the material strength of the aluminum. The limiting factor is the strength of the glass, which is breaking during the tensile tests.
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Richou, Marianne, Isabelle Chu, Geoffrey Darut, Raphael Maestracci, Manda Ramaniraka, and Erick Meillot. "Titanium and Tantalum Used as Functional Gradient Interlayer to Join Tungsten and Eurofer97." Journal of Nuclear Engineering 3, no. 4 (2022): 453–60. http://dx.doi.org/10.3390/jne3040031.

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For the DEMO reactor, tungsten is considered as an armor material. Eurofer97 is planned to be used as a structural material for the first wall and in the divertor region, especially for the shielding liner component. To date, several joining solutions between W and Eurofer97 have been developed (copper brazing, W and Eurofer97 functional gradient material (FGM), etc.). Each existing joining solution has its own advantages (joining material, improved manufacturing process). In the present study, the choice of the joining material is driven, among other constraints, by a desire to minimize the thermal stresses at the materials’ interface. In this regard, FGM represents a promising solution. Another constraint that is taken into account in this study concerns the manufacturing process involved, which should be an improved industrial process. The present study proposes a joining solution, based on FGM, which, additionally to the advantages of the existing solutions, could reduce the long-term activation of the joining material. The development of a joining solution via Ti and Ta as materials constituting the FGM (Ti/Ta FGM) is presented in this paper. Due to the achieved density and the composition’s accuracy, the cold spray process is shown to be adapted for the Ti/Ta FGM’s manufacturing. Based on the feedback on the experience of joining between W, W/Cu FGM and CuCrZr, the final joining between W, Ti/Ta FGM and Eurofer97 is achieved using hot isostatic pressing, followed by a thermal treatment to recover Eurofer97’s mechanical properties, resulting in good joining quality.
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OHASHI, Ryoji. "Dissimilar Material Joining by FSSW." JOURNAL OF THE JAPAN WELDING SOCIETY 87, no. 1 (2018): 28–32. http://dx.doi.org/10.2207/jjws.87.28.

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Gröger, Benjamin, Daniel Köhler, Julian Vorderbrüggen, et al. "Computed tomography investigation of the material structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets." Production Engineering 16, no. 2-3 (2021): 203–12. http://dx.doi.org/10.1007/s11740-021-01091-x.

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AbstractRecent developments in automotive and aircraft industry towards a multi-material design pose challenges for modern joining technologies due to different mechanical properties and material compositions of various materials such as composites and metals. Therefore, mechanical joining technologies like clinching are in the focus of current research activities. For multi-material joints of metals and thermoplastic composites thermally assisted clinching processes with advanced tool concepts are well developed. The material-specific properties of fibre-reinforced thermoplastics have a significant influence on the joining process and the resulting material structure in the joining zone. For this reason, it is important to investigate these influences in detail and to understand the phenomena occurring during the joining process. Additionally, this provides the basis for a validation of a numerical simulation of such joining processes. In this paper, the material structure in a joint resulting from a thermally assisted clinching process is investigated. The joining partners are an aluminium sheet and a thermoplastic composite (organo sheet). Using computed tomography enables a three-dimensional investigation that allows a detailed analysis of the phenomena in different joining stages and in the material structure of the finished joint. Consequently, this study provides a more detailed understanding of the material behavior of thermoplastic composites during thermally assisted clinching.
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Lee, In-Kyu, Sung-Yun Lee, Sang-Kon Lee, Myeong-Sik Jeong, Bong-Joon Kim, and Won-Gwang Joo. "Study on Effect of Shapes of Serration of Joining Plane on Joining Characteristics for the Aluminum–Steel Multi-Materials Press Joining Process." Materials 13, no. 24 (2020): 5611. http://dx.doi.org/10.3390/ma13245611.

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Recently, mechanical joining processes have received much attention for joining multi-materials. In particular, these processes have a great demand in the automobile industry for weight reduction. The press-fitting process is a representative mechanical joining process. In this process, the shape of the interfacial serration on the joining plane is very important because it has a significant effect on the joining strength. In this study, the characteristics of the aluminum–steel press joining process were investigated according to the shape of the interfacial serration of the joining plane. The deformation of the material and the forming load were investigated by conducting finite element analysis. In addition, the unfilled height of the material, joining force, and torque were measured experimentally.
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Merklein, Marion, Manuel Jäckisch, Clara-Maria Kuball, David Römisch, Sebastian Wiesenmayer, and Simon Wituschek. "Mechanical joining of high-strength multi-material systems − trends and innovations." Mechanics & Industry 24 (2023): 16. http://dx.doi.org/10.1051/meca/2023013.

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In conjunction with mechanical joining processes. Mechanical joining processes play a key role for the realization of multi-material lightweight structures, which are essential with regard to environmental protection. However, joining of dissimilar high-strength materials is challenging due to the varying properties of the joining partners and due to their high flow stresses and often limited ductility. Thus, the evolution of established processes as well as the development of innovative and highly productive joining technologies are necessary. Requirements for a highly volatile production environment are versatility, flexibility, resilience and robustness. Within this contribution, current trends and innovations related to selected mechanical joining processes for enabling the material mix are outlined in order to point out opportunities to address these requirements in the future. In this context, joining using cold formed pin structures is presented as a promising approach for connecting dissimilar materials like metals to fibre-reinforced plastics. Furthermore, it is shown how the shear-clinching technology can be combined with a process-adapted application of locally limited heat treatment in order to promote the joinability and control the material flow during joining. A novel approach for reducing process forces and expanding process windows is the use of ultrasonic assistance for mechanical joining operations, which is demonstrated by the example of a nut staking process with superimposed high frequency oscillation. As concerns the widely used self-piercing riveting technique, current research activities relate not only to the further development of the joining process itself, for example by combining self-piercing riveting and tumbling, but also to the use of new rivet materials like high strain hardening stainless steels. In addition, the evolution towards mechanical joining 4.0 against the background of data-based process control in conjunction with of mechanical joining processes is also subject of the considerations.
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Ramkumar, J., A. K. Singhal, Ritesh Kumar Singh, and Prashant Kumar. "Butt Joining of Similar & Dissimilar Pipe Material by Cold Joining Process." Advanced Composites Letters 16, no. 5 (2007): 096369350701600. http://dx.doi.org/10.1177/096369350701600503.

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In this work, cold butt FRP joints were developed between two similar & dissimilar pipe materials by winding up balanced glass fabric mats in varying orientation. The glass fabric mats were wetted with controlled quantity of resin and wound circumferentially at the place of joining. The strength of the cold butt joints was determined by flexural bend test, fatigue test and internal pressure leak test. It is clear from the experiments that the FRP joint strength is almost as good as the strength of the pipe material. The mechanisms of failure are also discussed.
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Dissertations / Theses on the topic "Material joining"

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Sankaran, Nishanth Bharadwaj. "Ridged Nail Designs for Multi-Material Joining of Automotive Structures." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531702943447706.

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Klein, Mario, Frank Podlesak, Kevin Höfer, et al. "Advanced Joining Technologies for Load and Fibre Adjusted FRP-Metal Hybrid Structures." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-177669.

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Multi-material-design (MMD) is commonly realized through the combination of thin sheet metal and fibre reinforced plastics (FRP). To maximize the high lightweight potential of the material groups within a multi-material system as good as possible, a material-adapted and particularly fibre adjusted joining technology must be applied. The present paper focuses on two novel joining technologies, the Flow Drill Joining (FDJ) method and Spin-Blind-Riveting (SBR), which were developed for joining heavy-duty metal/composite hybrids. Tests were carried out with material combinations which are significant for lightweight constructions such as aluminium (AA5083) and carbon fibre-reinforced polyamide in sheet thickness of 1.8 mm. The mechanical testing and manufacturing of those multi-material joints was investigated.
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Fedina, Tatiana. "Laser beam-material interaction in Powder Bed Fusion." Licentiate thesis, Luleå tekniska universitet, Produkt- och produktionsutveckling, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84303.

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The acceptance of additive manufacturing (AM) depends on the quality of final parts and the process repeatability. Recently, many studies have been dedicated to the establishment of the relationship between the process behavior and material performance. Phenomena such as laser-material interaction, melt pool dynamics, ejecta formation and particle movement behavior on a powder bed are of a particular interest for the AM community as these events directly influence the outcome of the process. Another aspect, which hinders the adoption of AM, is the need for cost-efficient powder materials and their sustainable processing and subsequent recycling.  The research work presented in this thesis, to a certain degree, covers the above mentioned scientific aspects and focuses on the behavior of gas and water atomized steel powders in laser powder bed fusion (LPBF).  Paper I demonstrates a comparative study of dissimilarly-shaped gas and water atomized low alloy steel powders regarding their processability, packing capacities, particle movement behavior and powder performance in LPBF. The impact of chemical composition and morphology of the powders on the process behavior was revealed. Powder spattering and melt pool instabilities were discussed in detail.  Paper II explains the role of ejecta in the recycled powder and the changing behavior of the material due to ejecta pick-up. The impact of multiple powder recycling on the degradation of low alloy steel powder in laser powder bed fusion was studied. Oxygen content, particle size and ejecta occurrence gradually increased after each recycling step and were identified as the main contributors to the property alterations observed in the powder during recycling. In addition, a direct correlation between the increase in oxygen with repeated recycling and a more frequent spatter ejection after each recycle was established.  Paper III is a successor of Paper I and contains a research on the particle movement and denudation behavior on a powder bed when using near-spherical and non-spherical steel powders. The influence of particle morphology on the dynamics of arbitrary-shaped powder particles was studied by applying an analytical correlation formula to calculate the drag force exerted on powder particles of various shape. Particle entrainment of gas and water atomized powders in front of the laser beam was measured, revealing a significant difference in the powder transfer towards the melt pool.
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Al-Zubaidy, Basem. "Material interactions in a novel Refill Friction Stir Spot Welding approach to joining Al-Al and Al-Mg automotive sheets." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/material-interactions-in-a-novel-refill-friction-stir-spot-welding-approach-to-joining-alal-and-almg-automotive-sheets(ccf8ed1d-e468-4a6c-b90e-ca868d3349e0).html.

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Refill Friction Stir Spot Welding (RFSSW) is a new solid-state joining technology, which is suitable for joining similar and dissimilar overlap sheets connections, particularly in aluminium and magnesium alloys. This welding method is expected to have wide applications in joining of body parts in the automotive industry. In the present study, RFSSW has been used to join 1.0 mm gauge sheets of two material combinations: similar AA6111-T4 automotive aluminium alloy joints and a dissimilar aluminium AA6111-T4 to magnesium AZ31-H24 alloy combinations. The performance of the joints was investigated in terms of the effect of the welding parameters (including tool rotation rate, sleeve plunge depth, and welding time etc.) to improve current understanding and allow optimisation of the process for short welding-cycles when joining similar and dissimilar light alloys. The results of the investigations on similar AA6111 welds showed the ability to use a wide window of process parameters that resulted in joints with a successfully refilled keyhole and flat weld surface, even when using a welding time as short as 0.5 s. The joints in the as-welded condition showed strengths as high as 4.2 kN, when using welding parameters of 1500 rpm, 1.0 mm with a range of welding times from 0.55 to 2.0 s. All joints showed a nugget pull-out failure mode when using a sleeve plunge depth of 0.8 mm or more, as a result of increasing the joint area. The strength of the joints further improved and reached peak loads of 5.15 and 6.43 kN after natural and artificial ageing, respectively, for welds produced using optimised welding parameters of a 2500 rpm tool rotation rate, a 1.5 s welding time and a 1.0 mm plunge. This improvement in strength resulted from the improvement in the local mechanical properties in the HAZ and other regions, which results from a minimal HAZ due to the rapid weld cycle and the re-precipitation of GPZs and clustering on natural ageing, or β on artificial ageing. A modification to the RFSSW process was developed in this project to solve the problems faced when dissimilar welding Mg to Al. This modified process involved adding a final brief pin plunge stage to consolidate refill defects and it was successful in producing nearly defect-free joints with improved mechanical properties, using a wide range of the process parameters. The average peak load of the joints increased with increasing tool rotation rate, to reach a maximum value at 2500 rpm due to eliminating the weld defects by increasing the material plasticity. However, increasing the tool rotation rate further to 2800 rpm led to a decrease in the average peak failure load due to eutectic melting at the weld interface. The optimum welding condition was thus found to be: 2500 rpm, 1.0 s, and 1.0 mm, which gave an average peak failure load of 2.4 kN and average fracture energy of 1.3 kN.mm. These values represent an improvement of about 10 % and 27 %, respectively, compared to welds produced with the conventional RFSSW process, and about 112 % and 78 % of the Mg-Mg similar joints produced using the same welding conditions. A FE model developed in this project was successful in increasing understanding of the behaviour of the RFSSW joints when subjected to lap tensile-shear loading. The stress and strain distribution in the modelled samples showed that the highest concentration occurring in the region of the confluence of the SZ with the two sheets. With increasing extension, these regions of highest stress and strain propagated to the outer surfaces of the two sheets and then annularly around the weld nugget. This annular ring of high strain concentration agreed well with the failure path and results in the full plug pull-out fracture mode shown by the experimentally tested samples. The predicted force-extension curves showed high agreement with the experimental results, especially when including the effect of the hook defect and correction of compliance in the experimental results.
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Mäkinen, Katri. "Optimisation of local material parameters : Optimising local material parameters in ductile cast iron cylinder head casting." Thesis, Jönköping University, JTH, Material och tillverkning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-54500.

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The constantly tightening emission regulations demand the engines to be moreefficient, to get more power out of smaller engines. Higher engine loads andcomponent temperatures are causing more stresses to engine components. Therefore,a company that produces engines wanted to study if it would be possible to increasethe capabilities of the components by optimising the used material. In this final project work, a cylinder head will be studied. The cylinder heads for theengines are made of ductile cast iron. The limits of that material are near safety limits,and therefore a better material is needed. In this work are some previous studiesanalysed and tried to find how to optimise the used material. The optimised materialshould have better thermal conductivity properties combined with sufficient strengthproperties. Previous studies were analysed to gather knowledge of the elements that affect thematerial parameters. Those studies showed that copper, silicon, pearlite fraction, andthe use of chills are the elements to be optimised. Silicon and pearlite fraction waschosen as optimisation parameters because of their effect on the thermal conductivityand strength properties. Copper was chosen as an optimisation variable due to its effecton the pearlite formation. Chills were used to affect the cooling rate and thereby thepearlite formation. The work was made using MAGMASOFT™ simulation software to simulate cylinderhead casting. The simulated cylinder head was divided into 4 parts for the simulations.For those sections were then set targets for pearlite fraction according to previousstudies. The silicon content was kept constant in the simulation, based on the studiespresented in this work. Copper content was simulated with variations from 0 to 0.7weight-%, and chill heights were simulated from 20 to 60 mm and without chills. After simulating the different variables, the results were analysed. Then the selectedcasting simulation result was mapped to finite element simulation mesh to include thelocal material parameters to finite element simulation. With the finite elementsimulation, the estimated lifetime of the component was simulated. By analysing the casting simulation results, an optimal combination was found. Theoptimal material parameters for a cylinder head casting would be copper 0.5weight-%, silicon 1.9 weight-% and chills thicker than 40 mm on the flame plate. Theoptimised material gives more possibilities to develop engines even further when thecomponent demands are growing.
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Zemui, Simon. "Quenching and tempering hardness response of front axle steel beams : Different material properties during quenching and tempering." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62747.

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The aim of this thesis was to investigate what the relation is between as-quench hardness and final surface hardness for steel beams is, depending on what tempering temperature is used. Also explain how chemistry, dimension and microstructure effects the final mechanical properties of the front axle beam. For this a review of literature concerning the effects was completed.Hardness measurement on the surface was performed on the ends of the beam (bottom and top). This hardness measurement was performed on 6 different front axle articles of the same material (41CrS4) and 2 different front axle articles of another material (40CrMo4). The relation diagram gives an estimation of what type of tempering temperature is needed to achieve the final hardness that is desired. Because the relation was done with some inconsistences it can’t be said to give a perfect answer. The relation diagrams only work for material 41CrS4 and 40CrMo4. For the core hardness test, 2 articles of 41CrS4 and one article of 40CrMo4 was measured on 5 different position on the cross-section, the beams for the respective articles were taken from quenched state and quenched+tempered. The beam dimensions have a significant effect when it comes to cooling down the part and achieve as close to uniform hardness as possible. Even though the Middle point of the I-section sample is one of the closest cores to the surface, it has a softer core compared with the other cores. While there exists hardness difference after quenching between different points in the core they even out after tempering. When comparing the core hardness with the surface hardness it can be said that the surface hardness is not as hard as the core because of decarburization. The microstructure analysis was done on 2 articles of 41CrS4 and one article of 40CrMo4. Samples from the 3 articles is taken from both the as-quenched state and quenched+tempered state. From the optical microscope it could be seen, that the surface of the beams decarbonizes leading to a higher amount of ferrite at the structure and softer surface. Because of this 15 mm into the material is harder than at-surface. Decarburization of the 41CrS4 steels made it so that what should have been a martensite and bainite dominated surface became a ferrite and bainite dominated.To decide the actual amount of retained austenite in the sample an XRD-analysis was performed. The XRD-analysis is done only for one article type of 41CrS4. From the front axle beam three samples of three different locations (bottom, middle, top) was taken for the analysis. For the theoretical calculation of the retained austenite vs the actual amount it can be said that is a very good representation of the total amount of retained austenite in the product. But the theoretical calculation deviates a bit from the actual amount at the top part of the beam.<br>Syftet med denna avhandling var att undersöka vad relationen är mellan härdat ythårdhet och slut ythårdhet för stålbalkar är, beroende på vilken anlöpnings temperatur som används. Tar också upp hur kemi, dimension och mikrostruktur påverkar de sista mekaniska egenskaperna hos framaxel balken. För detta genomfördes en genomgång av litteraturen om effekterna.Hårdhetsmätning på ytan utfördes på balkens ändar (botten och toppen). Denna hårdhetsmätning utfördes på 6 olika främre axelartiklar av samma material (41CrS4) och 2 olika främre axelartiklar av annat material (40CrMo4). Relationsdiagrammet ger en uppskattning av vilken typ av anlöpningstemperatur som behövs för att uppnå den slutliga hårdheten som önskas. Eftersom förhållandet gjordes med vissa inkonsekvenser kan det inte sägas ge ett perfekt svar. Relationsdiagrammen fungerar endast för material 41CrS4 och 40CrMo4.För kärnhårdhetstestet mättes 2 artiklar av 41CrS4 och en artikel av 40CrMo4 i 5 olika positioner på tvärsnittet, stålen för respektive artiklar togs från härdat tillstånd och härdat + anlöpt. Dimensionerna har en signifikant effekt när det gäller att kyla ner delen och uppnå så nära enhetlig hårdhet som möjligt. Även om mittpunkten i I-sektionsprovet är en av de närmaste kärnorna till ytan, så har det en mjukare kärna jämfört med de andra kärnorna. Det finns hårdhetsskillnad efter härdning mellan de olika punkter men de jämnar ut sig efter anlöpningen. När man jämför kärnhårdheten med ythårdheten kan man säga att ythårdheten inte är så hård på grund av avkolning.Mikrostrukturanalysen gjordes på 2 artiklar av 41CrS4 och en artikel av 40CrMo4. Prover från de 3 artiklarna tas från både härdat tillstånd och härdat + anlöpt tillstånd. Från det optiska mikroskopet kunde man se att stålbalkens yta har blivit utsatt för avkolning vilket leder till en högre mängd ferrit vid strukturen och en mjukare yta. På grund av detta, så är 15 mm in i materialet hårare än vid ytan. Avkolning av 41CrS4 stål gjorde så att det som borde ha varit ett martensit och bainit dominerat yta blev istället ferrit och bainit dominerat.XRD-analysen görs endast för en artikelart av 41CrS4. Från fram axelbalken togs tre prov från tre olika platser (botten, mitten, toppen) för analysen. För att bestämma den verkliga mängden restaustenit i provet utfördes en XRD-analys. För den teoretiska beräkningen av den rest austeniten jämfört med det faktiska beloppet kan man säga det är en mycket bra representation av den totala mängden kvarhållen austenit i produkten. Men den teoretiska beräkningen avviker lite från den faktiska mängden vid stålens övre del.
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Segerstark, Andreas. "Laser Metal Deposition using Alloy 718 Powder : Influence of Process Parameters on Material Characteristics." Doctoral thesis, Högskolan Väst, Avdelningen för svetsteknologi (SV), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-11842.

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Additive manufacturing (AM) is a general name used for manufacturing methods which have the capabilities of producing components directly from 3D computeraided design (CAD) data by adding material layer-by-layer until a final componentis achieved. Included here are powder bed technologies, laminated object manufacturing and deposition technologies. The latter technology is used in this study. Laser Metal Powder Deposition (LMPD) is an AM method which builds components by fusing metallic powder together with a metallic substrate, using a laser as energy source. The powder is supplied to the melt-pool, which is created by the laser, through a powder nozzle which can be lateral or coaxial. Both the powder nozzle and laser are mounted on a guiding system, normally a computer numerical control (CNC) machine or a robot. LMPD has lately gained attentionas a manufacturing method which can add features to semi-finished components or as a repair method. LMPD introduce a low heat input compared to conventional arc welding methods and is therefore well suited in, for instance, repair of sensitive parts where too much heating compromises the integrity of the part. The main part of this study has been focused on correlating the main process parameters to effects found in the material which in this project is the superalloy Alloy 718. It has been found that the most influential process parameters are the laser power, scanning speed, powder feeding rate and powder standoff distance.These process parameters have a significant effect on the temperature history ofthe material which, among others, affects the grain structure, phase transformation, and cracking susceptibility of the material. To further understand the effects found in the material, temperature measurements has been conducted using a temperature measurement method developed and evaluated in this project. This method utilizes a thin stainless steel sheet to shield the thermocouple from the laser light. This has proved to reduce the influence of the laser energy absorbed by the thermocouples.
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Squires, Lile P. "Friction Bit Joining of Dissimilar Combinations of Advanced High-Strength Steel and Aluminum Alloys." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4104.

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Friction bit joining (FBJ) is a new method that enables lightweight metal to be joined to advanced high-strength steels. Weight reduction through the use of advanced high-strength materials is necessary in the automotive industry, as well as other markets, where weight savings are increasingly emphasized in pursuit of fuel efficiency. The purpose of this research is twofold: (1) to understand the influence that process parameters such as bit design, material type and machine commands have on the consistency and strength of friction bit joints in dissimilar metal alloys; and (2) to pioneer machine and bit configurations that would aid commercial, automated application of the system. Rotary broaching was established as an effective bit production method, pointing towards cold heading and other forming methods in commercial production. Bit hardness equal to the base material was found to be highly critical for strong welds. Bit geometry was found to contribute significantly as well, with weld strength increasing with larger bit shaft diameter. Solid bit heads are also desirable from both a metallurgical and industry standpoint. Cutting features are necessary for flat welds and allow multiple material types to be joined to advanced high-strength steel. Parameters for driving the bit were established and relationships identified. Greater surface area of contact between the bit and the driver was shown to aid in weld consistency. Microstructure changes resulting from the weld process were characterized and showed a transition zone between the bit head and the bit shaft where bit hardness was significantly increased. This zone is frequently the location of fracture modes. Fatigue testing showed the ability of FBJ to resist constant stress cycles, with the joined aluminum failing prior to the FBJ fusion bond in all cases. Corrosion testing established the use of adhesive to be an effective method for reducing galvanic corrosion and also for protecting the weld from oxidation reactions.
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Shirley, Kevin Alexander. "Toward a Production Ready FBJ Process for Joining Dissimilar Combinations of GADP 1180 Steel and AA 7085-T76." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6694.

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Friction Bit Joining (FBJ) is a new technology that can be used to join dissimilar materials together. This ability makes it a good candidate for creating light weight structures for the automotive industry by combining lightweight materials such as aluminum to stronger materials like advanced high-strength steels. The automotive industry and many other industries have great interest in reducing structure weight to increase fuel efficiency. The purpose of this research is to make FBJ of GADP 1180 to AA 7085-T76 a production ready process by (1) better understanding the effects of process parameters, bit design and tool design on joint strength and reliability especially as they relate to different joint configurations; (2) determining if consecutive FBJ joints on a part will be additive in strength; (3) improving surface finish for better coating adhesion so that joints can be made to withstand extended corrosion testing; and (4) determining the failure modes and fatigue life of joint components at high and low load amplitudes. No universal parameter set for optimizing peak load for T-peel, cross tension, and lap-shear tension configurations were found. Due to the extreme load conditions of T-peel and the smaller margin of safety it is better to optimize for T-peel. However, strength and reliability were still improved across the board. Cutting features and tapered shanks were found to not always be necessary. Removing cutting features from the bit design increased peak weld cycle loads, but a stiffer machine can overcome this. Consecutive FBJ joints on a part are mostly additive in nature. When the weakest joint fails, its load is distributed to the remaining joints and will limit the peak load of the whole part. If all joints are "good" then the peak load will be approximately additive. Most of the stress is localized on the side of the bit opposite of the pulling direction. Failure modes in lap-shear tend to change from weld nugget pullouts in single weld specimens to aluminum material failures in multi-weld specimens. This is because of the added stiffness that additional material and welds provide to resist coupons bending and creating a peeling action. Surface finish was improved by development of a floating carbide cutting system which cut aluminum flash as it was generated around the head of the bit. A new internal drive design provided the ability to drive bits flush with the aluminum top layer if desired with minimal reductions in strength. Flush bits provided benefits in safety, cosmetics, and coating adhesion.
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Hausner, Susann, Martin Franz-Xaver Wagner, and Guntram Wagner. "Microstructural Investigations of Low Temperature Joining of Q&P Steels Using Ag Nanoparticles in Combination with Sn and SnAg as Activating Material." MDPI AG, 2019. https://monarch.qucosa.de/id/qucosa%3A33164.

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Quenching and partitioning (Q&P) steels show a good balance between strength and ductility due to a special heat treatment that allows to adjust a microstructure of martensite with a fraction of stabilized retained austenite. The final heat treatment step is performed at low temperatures. Therefore, joining of Q&P steels is a big challenge. On the one hand, a low joining temperature is necessary in order not to influence the adjusted microstructure; on the other hand, high joint strengths are required. In this study, joining of Q&P steels with Ag nanoparticles is investigated. Due to the nano-effect, high-strength and temperature-resistant joints can be produced at low temperatures with nanoparticles, which meets the contradictory requirements for joining of Q&P steels. In addition to the Ag nanoparticles, activating materials (SnAg and Sn) are used at the interface to achieve an improved bonding to the steel substrate. The results show that the activating materials play an important role in the successful formation of joints. Only with the activating materials, can joints be produced. Due to the low joining temperature (max. 237 °C), the microstructure of the Q&P steel is hardly influenced.
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Books on the topic "Material joining"

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Narayanan, R. Ganesh, and Uday Shanker Dixit, eds. Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9.

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D, Kaplan Wayne, ed. Joining processes: An introduction. Wiley, 1997.

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Singh, M. Ceramic integration and joining technologies: From macro to nanoscale. Wiley-American Ceramic Society, 2011.

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Singh, M. Ceramic integration and joining technologies: From macro to nanoscale. Wiley-American Ceramic Society, 2011.

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Oxlade, Chris. Joining materials. Wayland, 2006.

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Charitidis, Constantinos A. Nanomaterials in joining. Walter de Gruyter GmbH & Co., KG, 2016.

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Schwartz, M. M. Joining of composite-matrix materials. ASM International, 1994.

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Gürgen, Selim, ed. Joining Operations for Aerospace Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59446-5.

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E, Reimanis Ivar, Henager C. H, Tomsia Antoni P, and American Ceramic Society Meeting, eds. Ceramic joining. American Ceramic Society, 1997.

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North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Advanced joining of aerospace metallic materials. AGARD, 1986.

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Book chapters on the topic "Material joining"

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Rotheiser, Jordan. "Assembly Method Selection by Material." In Joining of Plastics. Carl Hanser Verlag GmbH & Co. KG, 2009. http://dx.doi.org/10.3139/9783446445956.005.

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Sirotkin, O. S., and V. B. Litvinov. "Composite-material part joining." In Composite Manufacturing Technology. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-1268-0_6.

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Nicholas, M. G. "Material Aspects of Ceramic-Ceramic and Ceramic-Metal Bonding." In Advanced Joining Technologies. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0433-0_13.

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Vinson, J. R., and R. L. Sierakowski. "Joining of Composite Material Structures." In The behavior of structures composed of composite materials. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-5187-7_8.

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Yadav, V., A. K. Singh, and Uday Shanker Dixit. "An Efficient Inverse Method for Determining the Material Parameters and Coefficient of Friction in Warm Rolling Process." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_1.

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Mondal, Arpan Kumar, Pankaj Biswas, Swarup Bag, and Manas M. Mohapatra. "Prediction of Weld-Induced Angular Distortion of Single-Sided and Double-Sided Fillet Joints by SAW Process." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_10.

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Saha, Abhijit, and Subhas Chandra Mondal. "Optimization of Process Parameters in Submerged Arc Welding Using Multi-objectives Taguchi Method." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_11.

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Das, Bipul, Sukhomay Pal, and Swarup Bag. "Monitoring of Weld Quality in Friction Stir Welding Based on Spindle Speed and Motor Current Signals." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_12.

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Kapil, Angshuman, and Abhay Sharma. "Coupled Electromagnetic–Structural Simulation of Magnetic Pulse Welding." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_13.

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Ghosh, Aniruddha, Pawan Kumar, and Arvind Kumar. "Numerical Analysis of Heat Transfer of Arc Welded Plate." In Advances in Material Forming and Joining. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2355-9_14.

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Conference papers on the topic "Material joining"

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Ziegler, Dagmar. "Millennium Methods of Fabricating and Joining Thermoplastics." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00561.

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Abstract There are several thermoplastic welding processes that are utilized in today’s plastic fabrication industry. This paper reviews the processes of hot gas hand welding, hot gas extrusion welding, butt welding, and bending. These processes, when performed correctly, provide a fabricator the ability to join thermoplastic materials in a way that is structurally sound and leak free. Special focus will be placed on equipment, preparation of the material, and technical aspect of the processes.
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Haynes, Gardner. "Corrosion Resistance of Transition Material Clips for Joining Aluminum to Steel." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98538.

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Abstract Transition materials are clad metals that are designed to interface between dissimilar metals to reduce galvanic corrosion. This paper describes the use of steel dad aluminum clips which can be placed over aluminum sheet allowing it to be fastened to steel. Results of cyclic salt spray tests are presented. Thickness loss measurements were used to measure the reduction in galvanic corrosion provided by the transition material.
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Uhe, B. "Flexible self-pierce riveting and clinching with a single joining system using the same unified joining tools." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-188.

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Abstract. Self-pierce riveting and clinching are well-established joining techniques in car body manufacturing. For these two techniques C-frames with drives, which are mounted on industrial robots, are used to realise the joining process. Punch, die and blank holder, which build the joining tools, are characteristic for the mentioned techniques. Even though the joining tools of self-pierce riveting and clinching are similar, joining with the same unified tools is not implemented in car body manufacturing until now. Within this paper, the challenges and requirements of joining with unified joining tools are described. At the beginning of the examination, reference joints are produced experimentally with conventional joining tools. After that, unified joining tools are elaborated, using numerical simulation. At the end, the feasibility of the approach is demonstrated by experimental joining tests with the newly elaborated joining tools.
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Swamy, Vinay. "Investigation of mechanical properties of natural material 3D printed specimens." In Materials Joining and Manufacturing Processes. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903612-4.

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Abstract. 3D printing, or additive manufacturing, has indeed revolutionized multiple industries by offering a more efficient, flexible, and precise way to create products. It is the process of building up material layer by layer based on a 3D CAD model, which allows for highly complex geometries that traditional manufacturing methods might not be able to produce. This competence is a key reason for aerospace, automotive, healthcare, and consumer goods sectors have embraced 3D printing technologies. The present study investigates the use of natural materials in 3D printing, aiming to provide a sustainable and eco-friendly alternative to traditional synthetic materials. The research focuses on identifying suitable natural materials, evaluating their mechanical properties by testing UTM and assessing their environmental impact. Key natural materials explored include ABS.
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Sankaranarayanan, R., and N. Rajesh Jesudoss Hynes. "Prospects of joining multi-material structures." In 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5033165.

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Borgert, T. "Form-based manufacturing of aluminium and steel auxiliary joining elements as the basis for an efficient joining operation." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-180.

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Abstract. Reducing the weight of vehicles can significantly lower the energy or fuel consumed and thus the emissions during operation. One possibility to assess this is the use of a property adapted multi-material systems containing high strength steel, light metals like aluminium or magnesium and fibre reinforced plastics. While expanding the number of materials used new challenges arise for the production and furthermore the joining technology to manufacture the vehicle made of the multi-material systems. One approach to overcome these challenges is to use innovative and adaptable joining techniques which allows the manufacturing of joints of different material combinations. Extensive research activities on the two stage thermo-mechanical joining process with adaptable joining elements was able to demonstrate the great potentials in terms of joining dissimilar materials with good strength. The previously kinematic and path-based fabrication of auxiliary joining elements is modified in this publication to a form-based approach with a perspective of establishing an efficient process chain using easily and cheaply available rods. Based on the new approach to produce the auxiliary joining elements, it can be demonstrated that a reproducible production of the geometry is possible for the investigated steel as well as aluminium material.
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KRAUS, Christian. "Development of new strategies for the mechanical joining of components made of aluminum die casting." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-190.

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Abstract. Structures made of aluminum die casting are being used in increasing quantities as well as component sizes for various applications. Due to the size of the components, heat treatment of the cast parts following the casting process is omitted in order to meet dimensional accuracy requirements and reduce production costs. From such an approach, challenges arise with regard to the mechanical joining of these aluminum die-cast structures. On one hand, the absence of heat treatment results in a general decrease in ductility. On the other hand, the increasing size of the components introduces process-related tolerances regarding the quality of the casting, including the presence of air or gas inclusions, and significant variations in ductility within the component. These factors present challenges for mechanical joining technologies, such as the potential risk of crack-related defects during the joining process. For the robust mechanical joining of such materials, the development and validation of suitable joining strategies for aluminum die cast components is presented in this paper. A preparatory step involving localized heat treatment in the joining area is implemented to enhance the suitability of the casting material for mechanical joining. The objective is to generate an improved ductility state in the aluminum die casting material, enabling crack-free joining through self-pierce riveting. Additionally, the formability of the aluminum die casting material is characterized using a specially developed ductility testing method. This allows the prediction of potential crack-related defects during mechanical joining. The methods described are developed using the AlSi10MnMg material in its as-cast state and applied to the self-pierce riveting process.
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PIWEK, A. "Influence of enlarged joining zone interfaces on the bond properties of tailored formed hybrid components made of 20MnCr5 steel and EN AW-6082 aluminium." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-87.

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Abstract. Hybrid material compounds offer an extension of the technological application range of monolithic components by combining positive material-specific properties. In the case of steel and aluminium, a load-adapted component with high strength areas and a reduced weight can be created. Tailored Forming enables the joining zone created by a pre-joining process to be modified and enhanced by a subsequent forming step. Derived from previous studies, an enlarged joining zone interface through spherical joining zone curvature and an equalisation of yield stresses through an inhomogeneous induction heating with partial cooling are necessary to achieve a defect free bond with high strength and ductility. In order to further enlarge the joining zone interface and hence to increase the surface ratio of juvenile welding spots without brittle intermetallic compounds, different local plastic strains are induced. Additionally, an alternative spray cooling concept is used to evaluate the effect of steeper temperature gradients on the bond quality. Rotary friction welded specimens made of 20MnCr5 steel and EN AW-6082 aluminium are cup backward extruded with different extrusion ratios using punch diameters of 22 mm and 30 mm. Metallographic images, SEM analysis and hardness tests of cross-sections are used to evaluate the bond quality with regard to the joining zone formation, occurring defects and the resulting intermetallic compound. With cooling, higher yield stresses could be set in the aluminium, which counteract material failure even with larger punch diameters due to a higher deformability. However, the surface enlargement of the joining zone is reduced. Despite the higher surface enlargement in uncooled specimens, insufficient bonds were achieved due to existing cracks in the aluminium in or near the joining zone interface, as well as significant thicker intermetallic compounds.
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Wagner, Florian, Michael Kreimeyer, and Gerd Sepold. "Laser Joining Technologies for Dissimilar Material Combinations." In International Body Engineering Conference & Exhibition and Automotive & Transportation Technology Congress. SAE International, 2002. http://dx.doi.org/10.4271/2002-01-2010.

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Haynes, Gardner, and Bijendra Jha. "Joining Aluminum to Steel with Transition Material." In International Congress & Exposition. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-0660.

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Reports on the topic "Material joining"

1

Chiu, Luna H., Dennis C. Nagle, Daniel J. Snoha, and Kyu Cho. Thermal Analysis of Self-Propagating Reaction Joining Material. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada361130.

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Joshi, Vineet. High Velocity Joining of Multi-material Stacks Containing 3rd Generation Advanced High-Strength Stainless Steel and Aluminum Extrusion and Casting - CRADA 628 (Abstract). Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2440279.

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Magness, F. H. Joining of polymer composite materials. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6334940.

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et al., Gianetto. L52352 Microstructure and Hardness Characterization of Girth Welds. Pipeline Research Council International, Inc. (PRCI), 2012. https://doi.org/10.55274/r0010613.

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Strain-based design for pipeline projects requires overmatching the strength of the weld metal (WM) relative to the parent pipe to avoid strain localization in the weldment during service. Achieving the required strength overmatch, ductility and low temperature toughness in WM becomes a challenge as the strength of the pipe increases. The introduction of higher productivity advanced pulsed gas metal arc welding (GMAW-P) processes adds further complications from the associated cooling conditions of the weldment. An improved understanding of WM systems (compositions, microstructures, essential variables, etc.) required for the successful large scale production of high strength pipeline field girth welds is needed for new and demanding pipeline construction projects. This work provides details of the characterization of experimental girth welds produced for a major consolidated program of research with two primary areas of focus related to the welding of high strength steel pipelines. The first aims to update weld design, testing, and assessment procedures [1]. The second aims to optimize welding solutions for joining high strength steel X100 (Grade 690) pipe by examining the welding process and material variables that lead to variation in weld properties [2]. Characterizing and understanding the microstructures that develop in these high strength steel welds is a key element in the overall investigation to reduce variation in weld properties through better control of the welding process.
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Feng, Zhili, Hui Huang, Jian Chen, et al. High Performance Computing Tools to Advance Materials Joining Technology. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1524886.

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Begg, Darren. PR-214-124506-R02 Toughness and Strength of Sub-Arc Double Jointed High Strength Pipe. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011418.

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Current design of pipelines calls for overmatching weld metal tensile strength, forcing deformation to occur in the base material and not in the weld. If straining of the weld metal were to occur, higher levels of weld metal toughness would be required to prevent fracture initiation from pre-existing defects. There are three known issues related to the Submerged Arc Welding (SAW) double jointing of pipeline steels: - Consistently achieving weld metal strength and toughness requirements. - Heat affected zone (HAZ) softening of the base material. - Lack of an accepted test protocol for the entire range of pipe grades. The results herein will help improve the quality and efficiency of SAW welding in double jointing for all pipeline steels, and enhance industry's ability to complete double jointing and standardize its acceptance, and will improve construction efficiency, pipeline reliability and safety by addressing this important research gap in transmission pipeline welding.
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David, S. A., G. M. Goodwin, and K. Gardner. Bibliography of the technical literature of the Materials Joining Group, 1951--1991. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10137876.

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David, S. A., G. M. Goodwin, and K. Gardner. Bibliography of the technical literature of the Materials Joining Group, 1951--1991. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5347822.

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Sabau, Adrian, Harry Meyer III, Jiheon Jun, Jianlin Li, and Donovan Leonard. Laser-Interference Surface Preparation for Enhanced Coating Adhesion and Adhesive Joining of Multi-Materials. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1826028.

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Nowok, J. W., and J. P. Hurley. Energy and environmental research emphasizing low-rank coal: Task 6.2. Joining of advanced structural materials. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/200700.

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