Journal articles: 'Dissimilar metal welding'

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Carlone, Pierpaolo, and Antonello Astarita. "Dissimilar Metal Welding." Metals 9, no. 11 (November 9, 2019): 1206. http://dx.doi.org/10.3390/met9111206.

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The combination of distinct materials provides intriguing opportunities in modern industry applications, whereas the driving concept is to design parts with the right material in the right place [...]

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Chuaiphan, Wichan, and Loeshpahn Srijaroenpramong. "The Behaviour of Nitrogen on the Welding Parameters of the Dissimilar Weld Joints between AISI 304 and AISI 316L Austenitic Stainless Steels Produced by Gas Tungsten Arc Welding." Applied Mechanics and Materials 248 (December 2012): 395–401. http://dx.doi.org/10.4028/www.scientific.net/amm.248.395.

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The behavior of nitrogen into the dissimilar joining metal between AISI 304 and AISI 316L Austenitic stainless steel during gas tungsten are welding process was investigated. Studied by using an arc nitrogen atmosphere – controlling in chamber. The relations between nitrogen content of the dissimilar weld metal and the welding parameters, such as the welding current, welding speed, welding arc length and penetration area of weld metals were also evaluated. The results show that the nitrogen content of the weld metals decreased with an increasing welding current, and increasing penetration areas of weld metal, but scarcely depends on the welding arc length. The nitrogen content of the weld metals increased with the welding speed, but decreased penetration areas of weld metals. The role of nitrogen content on the dissimilar weld metals stainless steel is further confirmed by the experimental microstructure, mechanical and corrosion behaviour of the weld metal.

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Venukumar, S., Muralimohan Cheepu, T. Vijaya Babu, and D. Venkateswarlu. "Cold Metal Transfer (CMT) Welding of Dissimilar Materials: An Overview." Materials Science Forum 969 (August 2019): 685–90. http://dx.doi.org/10.4028/www.scientific.net/msf.969.685.

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In recent years, the continuous growth in manufacturing industries such as light weight structures, demands in increasing of its performance and functionality enhance the use of different materials for producing hybrid structures and thus the requirements for joining of dissimilar joints. The physical and metallurgical properties of the materials are utilised to get combined properties to achieve the product performance. On the other hand the joining methods are continuously challenging for joining of dissimilar materials. The present study reviews and describes the effective welding method of cold metal transfer for joining of dissimilar materials and its state of the art research in various materials joining. Cold metal transfer joining mechanism, capabilities of joining of dissimilar metals and their performance are reviewed. The current and emerging techniques of cold metal transfer welding method are reviewed. Methods and other technological parameters selection are described and future challenges for improving research methods on joining of dissimilar metals using cold metal transfer. Keywords: Cold Metal Transfer, MIG welding, Dissimilar materials, Mechanical properties.

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Kah, Paul, Madan Shrestha, and Jukka Martikainen. "Trends in Joining Dissimilar Metals by Welding." Applied Mechanics and Materials 440 (October 2013): 269–76. http://dx.doi.org/10.4028/www.scientific.net/amm.440.269.

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The welding of dissimilar materials finds a wide variety of applications in the fields of industrial construction and manufacturing, where the characteristic features of the different materials are optimized for the desired application to result in cost effectiveness and value addition. Non-fusion welding methods such as solid state welding and high energy beam welding are more popular for welding dissimilar metal combinations, due to fewer complications, than fusion welding, which melts the base metal and forms brittle intermetallic compounds (IMCs) that may lead to failure. Various factors have to be considered when assessing the feasibility of welding dissimilar metals and producing a sound weld joint. This paper presents a broad classification of the most commonly used welding processes for dissimilar materials, discusses some of the commonly used welding processes with examples of some common material combinations, critical factors for good welding, and practical difficulties arising from the physical and chemical properties of materials. From the findings, it can be inferred that continuous improvement and research is still required in the field of dissimilar metal welding, particularly in the light of increasing demand for tailored material for modern engineering and industrial applications.

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Assi, Abdullah Daie'e. "Estimation of Some Mechanical Properties for Similar & Dissimilar Welded Joints." Wasit Journal of Engineering Sciences 2, no. 1 (March 8, 2014): 59–76. http://dx.doi.org/10.31185/ejuow.vol2.iss1.24.

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This research deals with the choice of the suitable filler metal to weld the similar and dissimilar metals (Low carbon steel type A516 & Austenitic stainless steel type 316L) under constant conditions such as, plate thickness (6 mm), voltage (78 v), current (120 A), straight polarity. This research deals with three major parts. The first parts Four types of electrodes were used for welding of dissimilar metals (C.St A516 And St.St 316L) two from mild steel (E7018, E6013) and other two from austenitic stainless steel (E309L, E308L) various inspection were carried out include (Visual T., X-ray T., δ- Ferrite phase T., and Microstructures T.) and mechanical testing include (tensile T., bending T. and micro hardness T.) The second parts done by used the same parameters to welding similar metals from (C.St A516) Or (St.St 316L). The third parts deals with welding of dissimilar weldments (C.St And St.St) by two processes, gas tungsten are welding (GTAW) and shielded metal are welding (SMAW). The results indicated that the spread of carbon from low carbon steel to the welding zone in the case of welding stainless steel elect pole (E309L) led to Configuration Carbides and then high hardness the link to high values compared with the base metal. In most similar weldments showed hardness of the welding area is higher than the hardness of the base metal. The electrode (E309L) is the most suitable to welding dissimilar metals from (C.St A516 With St.St 316L). The results also showed that the method of welding (GTAW) were better than the method of welding (SMAW) in dissimilar welded joints (St.St 316L with C.St A516) in terms of irregular shape and integrity of the welding defects, as well as characterized this weldments the high-lift and resistance ductility good when using the welding conditions are similar.

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Devaraj, Jeyaganesh, Aiman Ziout, and Jaber E. Abu Qudeiri. "Dissimilar Non-Ferrous Metal Welding: An Insight on Experimental and Numerical Analysis." Metals 11, no. 9 (September 18, 2021): 1486. http://dx.doi.org/10.3390/met11091486.

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In recent years Gas Metal Arc Welding (GMAW) technology has expanded its functionalities in various areas which have further motivated its usage in several emerging manufacturing industries. There are several issues and challenges associated with this technology, especially in dissimilar metal welding (DMW). One of the predominant challenges is selecting appropriate welding parameters which influence the efficiency of this technology. To explore several modern advancements in this expertise, this paper has done an exclusive survey on various standards of GMAW and its variants for selecting suitable parameters for welding dissimilar nonferrous metals. This review summarizes various experimental and numerical results along with related illustrations to highlight the feasibility of welding dissimilar nonferrous metals using traditional GMAW and investigations on advanced GMAW processes such as cold metal transfer (CMT) and pulsed GMAW (P-GMAW). Simulation and modeling of nonferrous DMW have identified several research gaps and modeling problems. Researchers and manufacturers can use this review as a guideline to choose appropriate welding parameters to implement GMAW and its variants for non-ferrous dissimilar welding. It found that by controlling the heat input and effective post-heat treatments, adequate joint properties can be achieved. Automated large -scale manufacturing will widen the utilization scope of GMAW and avoid some costly methods such as laser welding, ultrasonic welding, and friction stir welding etc.

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Haikal, Haikal, and Triyono Triyono. "STUDI LITERATUR PENGARUH PARAMETER PENGELASAN TERHADAP SIFAT FISIK DAN MEKANIK PADA LAS TITIK (RESISTANCE SPOT WELDING)." ROTASI 15, no. 2 (April 1, 2013): 44. http://dx.doi.org/10.14710/rotasi.15.2.44-54.

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Resistance spot welding (RSW) is the most widely used for joining thin sheet metals in automotive industry. Various applications of dissimilar materials and thicknesses were commonly found in many spot welding processes especially in the manufacture of car body. The resistance spot welding of dissimilar materials are generally more challenge than similar materials due to differences in the physical, chemical, and mechanical properties of the base metals. Differences of materials have an impact on heat input generated at the spot welding. Diameter of the weld nugget size is influenced by several parameters such as electric current, welding time, different types of material, and the thickness of the plate. Nugget diameter will influence on physical and mechanical properties weld such as microstructure, shear strength and hardness. For practical use, various industrial standards have recommended a minimum weld size for a given sheet thickness, mostly in the form of tables. For example the American Welding Society (AWS), Society of Automotive Engineering (SAE) and the American National Standards Institute (ANSI). They were only suitable to be apllied on the similar metal and thickness joint because in this joint, symetrical nugget will be formed. Meanwhile a type of dissimilar metal that joined by spot welding method will result in the asymetrical nugget. This paper aims to review the results of researchs on the similar and dissimilar resistance spot welded joint to evaluate the use of similar metals weld parameters and standards on the dissimilar metals weld. It was determined that parameters welding such as electric current, welding time, and the standard for similar metals weld can not be applied on the dissimilar metals weld. The asymetrical nugget shape decreased shear strength on the weld nugget. The most important factor that was considered on the dissimilar metals weld to make high quality weld joint was nugget diameter. If the nugget diameter weld increased the strength of welding will increase.

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Siddhu, Vikash, Naveen Kumar, and Dr Navneet Arora. "Investigation on Dissimilar Metal Welds by Resistance Spot Welding Process." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 65–72. http://dx.doi.org/10.31142/ijtsrd10805.

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Safari, Mehdi, Hossein Mostaan, and Abdoreza Ghaderi. "Dissimilar resistance spot welding of AISI 304 to AISI 409 stainless steels: mechanical properties and microstructural evolutions." Metallurgical Research & Technology 115, no. 6 (2018): 610. http://dx.doi.org/10.1051/metal/2018057.

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In this work, dissimilar resistance spot welding of austenitic stainless steel sheet (304 grade) and ferritic stainless steel sheet (409 grade) is studied experimentally. For this purpose, the effects of process parameters such as welding current, welding time and electrode force on tensile-shear strength of resistance spot welded joints are investigated with response surface methodology (RSM). Also, microstructural evolutions during resistance spot welding process of AISI 409 and AISI 304 stainless steels are evaluated by optical microscopy. It is concluded from results that the tensile-shear strength of spot welds is increased with increasing the welding current, welding time and electrode force. It is shown that widmanstatten ferrites have been grown in the weld metal of dissimilar resistance spot welds of AISI 304 and AISI 409 stainless steels.

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Soysal, T., S. Kou, D. Tat, and T. Pasang. "Macrosegregation in dissimilar-metal fusion welding." Acta Materialia 110 (May 2016): 149–60. http://dx.doi.org/10.1016/j.actamat.2016.03.004.

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Sun, Z., and J. C. Ion. "Laser welding of dissimilar metal combinations." Journal of Materials Science 30, no. 17 (September 1995): 4205–14. http://dx.doi.org/10.1007/bf00361499.

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Wahyu Restu Widodo, Eriek, Vuri Ayu Setyowati, Suheni, and Ahmad Rilo Hardianto. "Influences of Groove Angles and Filler Metals on 304L Stainless Steel to AISI 1040 Carbon Steel Dissimilar Joint by Gas Tungsten Arc Welding." E3S Web of Conferences 130 (2019): 01008. http://dx.doi.org/10.1051/e3sconf/201913001008.

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Dissimilar joint commonly applied on pressure vessel application in power plan field as joining between the tank and the stanchion of pressure vessel. This paper presents the investigations carried out to study the influence of groove angles and filler metals on 304L Stainless Steel to AISI 1040 Carbon Steel dissimilar joints. Gas Tungsten Arc Welding with 120 A of current was used on this research, joined the two different metals. The 30°, 45°, and 60° were used in this welding as parameters of V-groove angles. ER 308L-16 filler metal of stainless steel and ER 70S-6 filler metal of carbon steel were used as filler metals. Tensile test was conducted to obtain tensile strength of joint and to analysis of the effect of the welding parameters to the mechanical properties. The highest tensile strength was obtained from the 60° groove angle using ER 308L-16 filler metal of 614.54 MPa. In the other hand, 45° groove angle using ER 70S-6 filler metal obtained the lowest tensile strength of 578.66 MPa. The joining process of dissimilar welding using ER 308L-16 filler metal, filler metal for stainless steel, has obtained the highest tensile strength with wider groove angle as well.

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Venukumar, S., Muralimohan Cheepu, T. Vijaya Babu, and D. Venkateswarlu. "TIG Arc Welding - Brazing of Dissimilar Metals - An Overview." Materials Science Forum 969 (August 2019): 768–74. http://dx.doi.org/10.4028/www.scientific.net/msf.969.768.

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Tungsten inert gas (TIG) arc welding–brazing has been recently developed and is being increasingly implemented in various industrial applications. Nowadays, this process gains much attention in joining of dissimilar metal combinations. This review paper explains the principles underlying TIG arc welding – brazing of dissimilar metal combinations and highlights the above benefits in a number of practical applications. The process mechanism of TIG brazing is different from the conventional welding processes and it will bridge the gap between the two substrates by the addition of fillers under the concentrated heat source of TIG electrode. TIG brazing technique is one of the best alternative process among the other joining process for effective joining of dissimilar metals, which have various melting temperatures and physical properties. It is very important to understand the process mechanism and its compatibility with the various dissimilar materials joining. The present study focuses on the addressing of progress of TIG brazing process in modern days and its applications in the various industries, and to bring the awareness to the manufacturers about the importance of this process from this review report. Keywords: Tungsten inert gas (TIG) arc welding–brazing, Dissimilar metals, Microstructures, Mechanical properties.

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Zhang, Yan, DeShui Yu, JianPing Zhou, and DaQian Sun. "A review of dissimilar welding for titanium alloys with light alloys." Metallurgical Research & Technology 118, no. 2 (2021): 213. http://dx.doi.org/10.1051/metal/2021011.

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Titanium (Ti) alloys are widely used in industrial manufacturing, medical treatment, vehicles, and other fields. When welded with other alloys, due to great differences in physical and chemical properties of these materials, cracks easily appear in the joint, and obtaining stable welded joints is difficult. Results show that brittle intermetallic compounds (IMCs) formed in the welding process could reduce the plasticity of the joint. This review aimed to provide a comprehensive overview of the recent progress in welding and joining of Ti alloy and light alloys and to introduce current research and application. The methods available for welding Ti alloy and light alloys included fusion welding, brazing, diffusion bonding, friction welding and reactive joining. In this study, control methods of brittle IMCs in the welding process of Ti and other alloys and various improvement measures studied at home and abroad are described.

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Song, Gang, Taotao Li, Jingwei Yu, and Liming Liu. "A Review of Bonding Immiscible Mg/Steel Dissimilar Metals." Materials 11, no. 12 (December 11, 2018): 2515. http://dx.doi.org/10.3390/ma11122515.

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The challenge of joining immiscible Mg/Steel dissimilar metals lies in the absence of an Fe-Mg intermetallic or Fe-Mg solid solution in an Mg-Fe system, and differences in their physical and chemical properties. Promoting interfacial reaction and regulating the composition of interface layer are beneficial for the formation of an Mg/steel interface layer and to obtain an effective Mg/steel joint. This research work focusses on the bonding of immiscible Mg/steel dissimilar metals: First, an Mg/steel interface layer was designed by controlling the composition of added alloy elements and trace elements in the base metal. Second, the Mg/steel dissimilar metals welding methods were divided into three parts—solid state welding, welding-brazing and fusion welding. The main distinctions between them were difference in interfacial temperature, thickness of interface layer, and type of compound. Third, the orientation relationships (OR) of the Mg/interface layer system and the interface layer/steel system was investigated. In this review, the effect of welding processing parameters, addition of alloy elements, base metal, and different welding methods on the joint’s performance was studied. The mechanical property, microstructure, interface layer and metallurgical reactions of the joint were also examined. The most recent progress in joining immiscible Mg/Steel dissimilar metals and future research prospects are presented at the end of the paper.

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Miyashita, Yukio, Rattana Borrisutthekul, Jian Chen, and Yoshiharu Mutoh. "Application of Twin Laser Beam on AZ31/A5052 Dissimilar Metals Welding." Key Engineering Materials 353-358 (September 2007): 1956–59. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1956.

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Effect of the applying twin laser beam on the welding of AZ31 / A5052 dissimilar metals lap joint was studied. The direct welding and the welding with Al12Si filler wire were carried out. Flow behavior of the molten metal was analyzed by FEM simulation. For both welding methods, failure load of the joints increased by applying twin laser beam with reasonable beam distance. Twin laser beam technique could control temperature distribution and flow behavior of the molten metal.

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Zhang, Guo Dong, and Chang Yu Zhou. "Numerical Simulation of Welding Residual Stress and Post-Weld Heat Treatment for Dissimilar Steel Welded Joint." Materials Science Forum 575-578 (April 2008): 747–52. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.747.

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By the finite element analysis software ABAQUS and the function of coupling process between heat and stress, the welding residual stress of Cr5Mo and 20 steel joint was analyzed. In addition the heat treatment of dissimilar steel welded joint was simulated. The residual stress distributions of dissimilar steel welding and heat treatment after welding were obtained. The comparison of welding residual stress between the homogenous steel and dissimilar steel was carried out. The results indicate that the welding residual stress of the same steel is lower than that of dissimilar steel welded joint obviously. Because of the difference of thermal expansion coefficient for base metal and welding microstructure, the relatively higher residual stress is produced due to the bigger thermal expansion coefficient of base metal. The highest annular residual stress is in welding line root of internal wall, while the highest axial residual stress is in welding line surface of outer wall. The welding residual stress of dissimilar welded joint is reduced obviously after heat treatment. The research results provide the possibility for optimizing the welding procedure and improving the reliability of dissimilar steel welding joint.

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Ki, Ho, C. S. Kim, Y. C. Jeon, and S. I. Kwun. "Fatigue Crack Growth Characteristics in Dissimilar Weld Metal Joint." Materials Science Forum 580-582 (June 2008): 593–96. http://dx.doi.org/10.4028/www.scientific.net/msf.580-582.593.

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The fatigue crack growth (FCG) in dissimilar weld metal joints between SA 508 Cl.3 low-alloy steel and AISI 316L stainless steel (SS) was investigated. The dissimilar weld metal joint was made after buttering alloy 82 on the SA 508 Cl.3 side by gas tungsten arc welding (GTAW). Alloy 82 welding consumable was selected to join these two metals. The fatigue crack growth rate (FCGR) in each material in the dissimilar weld metal joint increased in the order: weldment, AISI 316L SS and SA 508 Cl.3, at the same stress intensity factor range, /K. As the crack propagated across the AISI 316L SS and heat affected zone (HAZ) into the weldment or across the SA 508 Cl.3 and HAZ, into the weldment, the FCGR in the HAZ region did not change or decrease, in spite of the increase in /K. The retardation in the FCGR in the HAZ region was discussed in terms of the welding residual stress.

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Mamat, M. F., E. Hamzah, Z. Ibrahim, A. M. Rohah, and A. Bahador. "Effect of Filler Metals on the Microstructures and Mechanical Properties of Dissimilar Low Carbon Steel and 316L Stainless Steel Welded Joints." Materials Science Forum 819 (June 2015): 57–62. http://dx.doi.org/10.4028/www.scientific.net/msf.819.57.

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In this paper, dissimilar joining of 316L stainless steel to low carbon steel was carried out using gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW). Samples were welded using AWS: ER309L welding electrode for GMAW and AWS: ER316L welding electrode for GTAW process. Determination of mechanical properties and material characterization on the welded joints were carried out using the Instron tensile test machine and an optical microscope respectively. The cross section area of the welded joint consists of three main areas namely the base metal (BM), heat affected zone (HAZ), and weld metal (WM). It was found that, the yield and tensile strengths of welded samples using ER316L filler metal were slightly higher than the welded sample using ER309L welding electrode. All welded samples fractured at low carbon steel base metal indicating that the regions of ER316L stainless steel base metal, ER316L filler metal and heat affected zone (HAZ) have a higher strength than low carbon steel base metal. It was also found that ER316L welding electrode was the best filler to be used for welding two dissimilar metals between carbon and stainless steel.

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Kumai, Shinji. "Dissimilar-Metal Joining Using Several Types of High-Speed Solid-State Welding Methods." Materials Science Forum 794-796 (June 2014): 357–64. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.357.

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Solid-state welding is useful to join dissimilar metal couples, in particular, with a large difference in physical and mechanical properties. However, conventional solid-state welding methods such as diffusion welding and roll bonding are not necessarily applicable to all metal combinations. In addition, they are time-consuming. In the present study, various dissimilar metal joints (e.g. Al/Fe, Al/Cu, Al/Ni, A2024/A5052, A6022/steel, A6022/Plated steel, A2024/AZ80) were fabricated by using several types of high-speed solid-state welding methods; friction stir spot welding, advanced stud welding and impact welding. The strength and characteristic interfacial morphology of the joints were investigated, and each joining mechanism is discussed. In particular, for the impact welding, both experimental and numerical analyses were performed. Two metal sheets were obliquely collided at a very high speed and joined by magnetic pressure or explosive force. Smoothed Particle Hydrodynamics (SPH) method was used to simulate the impact welding process. The emission of metal jet and the evolution of characteristic wavy interface at the joint interface could be clearly visualized. The effects of collision angle, collision velocity and difference in density of the metals on the wave morphology were revealed.

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Fukumoto, Masahiro, Hiroki Mizushima, and Toshiaki Yasui. "Friction Stir Welding between Dissimilar Metalswith Circular Weld Line." Key Engineering Materials 622-623 (September 2014): 501–7. http://dx.doi.org/10.4028/www.scientific.net/kem.622-623.501.

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Hybrid metallic structure, which is composed of aluminum alloy as a representative of light metal and steel as that of high strength metal, has been paid attention remarkably in these days, especially in the transportation vehicle industry from the energy saving viewpoint. To perform the hybrid structure, friction stir welding FSW has been recognized to be an effective way for the welding between dissimilar metals, like between steel and Al alloy. Based on our previous findings on the butt welding between dissimilar metals with straight weld line, welding between dissimilar metals with circular weld line has been tried to open a new application field of FSW. The objective of this research is to get a fundamental finding on the welding between dissimilar metals with circular weld line and to clarify the effect of material character of Al alloy and tool design on the FSW between dissimilar metals. Typical results obtained in this study are summarized as follows: 1) Macroscopic defects often observed at the bottom part of the welding in case of ADC12 material. It indicates that insufficient stirring was given in the stirring zone due to the higher thermo-mechanical property of ADC12. 2) Tensile strength of the specimen welded with scroll shoulder tool was 266 MPa, while that with flat shoulder tool was 161 MPa. Tensile strength of the weld joint was improved by a factor of 1.65 by introducing the scroll onto the tool shoulder with normal thread probe. 3) High performance defect free ADC12/S45C weld structure with circular weld line could be fabricated by the tool with combination of scroll shoulder and thread probe.

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Sahul, Miroslav, Martin Sahul, Milan Turňa, and Paulína Zacková. "Disk Laser Welding of Copper to Stainless Steel." Advanced Materials Research 1077 (December 2014): 76–81. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.76.

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The paper concerns with welding of copper to stainless steel. Technically pure Cu and AISI 304 austenitic stainless steel with the thickness of 2.0 mm were suggested as experimental metals. TruDisk 8002 laser with the wavelength of 1.03 μm and a maximum power of 8.0 kW was used for production of dissimilar metal welds. Laser power from the range of 2.3 to 2.9 kW and welding speed from 35 to 50 mm/s were used for welding dissimilar metals. Focal position was direct on the surface of welded metals. Helium with flow rate of 17 l/min was used for shielding of molten weld metal. Light microscopy, EDX microanalysis and micro hardness measurements across copper - fusion zone - stainless steel interface were performed in order to study the properties of the weld joints.

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Lee, Seung Hwan. "A Hot Cracking on Dissimilar Metal Weld between A106Gr.B and A312 TP316L with Buttering ERNiCr-3." Metals 9, no. 5 (May 8, 2019): 533. http://dx.doi.org/10.3390/met9050533.

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When designing piping systems for various industrial facilities, carbon steel and stainless steel are widely being used. In order to satisfy design requirements in the piping systems, the two different materials are often welded in various cases. Therefore, for quality assurance, it is necessary to understand mechanical and metallurgical properties of dissimilar metal welds thoroughly. In this study, dissimilar metal welds of stainless and carbon steels were produced through the gas tungsten arc welding (GTAW) process. In the middle of the dissimilar weld, buttering welding and butt welding were manufactured using filler wires of ERNiCr-3 and ER316L. The chemical composition of the dissimilar metal weld was analyzed. Tensile test, bending test, and hardness test were additionally performed. The microstructures of the dissimilar metal weld were investigated to analyze the cracks found during the tensile test and the bending test. The metallographic behavior was analyzed in the vicinity of the cracks. The mechanism and cause of the cracks in the dissimilar metal weld were identified. As a result, the precipitates of complex carbide types were observed in segregation bands.

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Gao, Xu, Ke Qiang Yu, and Xiao Hong Chen. "Study on Flow Phenomenon in Spot Welding Nugget of Dissimilar Materials." Advanced Materials Research 1004-1005 (August 2014): 1093–98. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1093.

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Flow phenomenon in spot welding nugget of dissimilar materials was studied. Metallographs in the course of welding nugget formation were observed and analyzed, through which it was indicated that: in the early stage of welding nugget formation, spot welding of dissimilar materials made liquid metals in the nugget produce a violent stirring action because the electrodynamic force overcame the medium resistance, causing unevenness of elements and compositions in the welding nugget; and then the unevenness was represented by vortex flow by means of different resistances to corrosion. It was proposed that the formation law of welding nugget could be recognized according to the formation law of vortex flow, and the vortex flow often moved from later-molten metal to former-molten metal. The property of welded joint with vortex flow was poorer than that without vortex flow.

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Wang, Shao Gang, Yan Li, and Wei Guo Zhai. "Microstructure and Corrosion Resistance of Dissimilar Welded Joints between Duplex Stainless Steel and Austenitic Stainless Steel." Advanced Materials Research 570 (September 2012): 43–51. http://dx.doi.org/10.4028/www.scientific.net/amr.570.43.

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The dissimilar metals components of duplex stainless steels are more and more used in engineering fields recently. But the welding of dissimilar metals is more a challenge than that of similar metals. The joints of dissimilar metals between 2205 duplex stainless steel and 304 austenitic stainless steel were produced by tungsten inert gas arc welding (GTAW) with welding wire ER2209 and ER309, respectively. The microstructural characterization of welded joints is systematically analyzed by using optical microscope and X-ray diffractometer. The pitting corrosion resistance of the joints is evaluated by electrochemical test. Results show that the microstructure of joint consists of austenite and ferrite, and no detrimental phases precipitate in the weldment. The biphase ratio of austenite (γ) / ferrite (α) is adequate both in weld metal and heat-affected zone (HAZ), which is advantageous to the performance of welded joints. The weld metals have relatively lower pitting corrosion resistance compared with the 2205 base metal, and the pitting corrosion resistance of the joint produced with ER2209 is better than that of the joint with ER309 in chloride solution.

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Das, Soumyajit, Mantra Prasad Satpathy, Bharat Chandra Routara, and Susanta Kumar Sahoo. "Microstructural and Joint Analysis of Ultrasonic Welded Aluminum to Cupro-Nickel Sheets for Lithium-Ion Battery Packs." Materials Science Forum 978 (February 2020): 463–69. http://dx.doi.org/10.4028/www.scientific.net/msf.978.463.

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Energy crisis poses a major challenge in the modern industrial scenario. A critical aspect of the shop floor work includes the welding of dissimilar metal sheets which require the right amount of energy. In order to tackle these challenges, a conservative and energy efficient method are necessary. Recently, automotive industries have been widely adopted the ultrasonic metal welding process for assembling lithium-ion battery packs and its modules. The joining of these dissimilar metals using any other conventional welding process is extremely challenging due to varying physical, chemical, thermal properties, the formation of the heat affected zone and lesser bond strength. However, ultrasonic metal welding yields better quality welds under the influence of optimal parametric conditions. In this research, the weld quality of two dissimilar materials, namely, aluminum (AA1060) with cupronickel (C71500) sheets investigated at different welding time, vibration amplitudes and welding pressures with a fixed ultrasonic frequency of 20 kHz. Experimental results show the tensile shear strength of the weld is maximum at the highest vibration amplitude with a moderate amount of weld pressure and weld time. Additionally, the joint quality and its associated microstructure at the weld region are analyzed by scanning electron microscopy (SEM) to reveal the bond strength with the interlocking feature.

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Sun, Min Ke, Dong Sheng Zhao, and Yu Jun Liu. "Numerical Simulation of Residual Stresses in Single Pass Butt-Weld of Dissimilar Pipe Joint during the Fusion Welding Process." Advanced Materials Research 314-316 (August 2011): 1034–37. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.1034.

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Dissimilar metal welded joints are widely used in engineering structures nowadays. Among the various types of material combinations, dissimilar welded joints of carbon steel and austenitic stainless steel are very common in shipbuilding, nuclear and chemical industries. In this study the finite element software MSC.Marc is employed to calculate the welding residual stresses in dissimilar butt-welded Q235 steel and 304 stainless steel pipes with different welding currents. The calculation results indicate that the welding residual stresses present asymmetric distribution, peaks of residual stresses on inner surface tend to be in 304 stainless side which can be significant higher than the yield stresses of parent metals. Changing in welding current does not have a significant effect on the peak of stress in weld center line.

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Pandey, N. D., N. Arora, Arvind Bharti, and P. Chakravorty. "Dissimilar Metal Welding Using Nd:YAG Pulsed Laser." Indian Welding Journal 35, no. 3 (July 1, 2002): 37. http://dx.doi.org/10.22486/iwj.v35i3.178759.

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AONUMA, Masayuki, and Kazuhiro NAKATA. "Dissimilar Metal Joining Using Friction Stir Welding." Journal of the Japan Society for Technology of Plasticity 53, no. 621 (2012): 869–73. http://dx.doi.org/10.9773/sosei.53.869.

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Sunagawa, Takuya, and Hironori Tohmyoh. "Welding dissimilar metal microwires by Joule heating." Japanese Journal of Applied Physics 54, no. 6S1 (April 28, 2015): 06FL01. http://dx.doi.org/10.7567/jjap.54.06fl01.

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Zens, A., M. F. Zaeh, R. Marstatt, and F. Haider. "Friction stir welding of dissimilar metal joints." Materialwissenschaft und Werkstofftechnik 50, no. 8 (August 2019): 949–57. http://dx.doi.org/10.1002/mawe.201900023.

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Triwanapong, Surat, and Kittipong Kimapong. "Effect of Welding Consumables on Dissimilar AISI304/AISI1015 Steels Butt Joint Properties." Key Engineering Materials 777 (August 2018): 344–49. http://dx.doi.org/10.4028/www.scientific.net/kem.777.344.

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The butt joint of dissimilar AISI304/AISI1015 steels was produced by a Shielded Metal Arc Welding (SMAW) with 3 types of the covered electrodes and the welding current of 80-120 A. The investigation of joint properties for the impact strength, the hardness, and the microstructure, was performed. The SMAW butt joint that was welded by the E312 covered electrode and 100A welding current showed the highest impact strength of 112 J. The chromium was the important reinforced element affected to increase in the hardness and the impact strength of the joint by forming and dispersing the chromium carbide in the weld metals. Interface structure of the carbon steel/the weld metal clearly showed a small combined area of the metals in opposition to the interface structure of the stainless steel/ the weld metal which had a large combined area of the metals.

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33

Gu, Yu Xuan, Xiao Wang, Er Shu Hao, Yuan Yuan Zheng, Tang Biao Qiu, You Juan Ma, and Hui Xia Liu. "Experimental Study on Laser Impact Welding of Dissimilar Metals." Key Engineering Materials 621 (August 2014): 19–24. http://dx.doi.org/10.4028/www.scientific.net/kem.621.19.

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Laser impact welding (LIW) is a novel welding technique which uses laser induced shock waves to obtain the solid-state and metallurgical bonding between flyer and base plates, and can be applied in welding of dissimilar metal plates in micron level. In this paper, experimental study is conducted with titanium as the flyer plate and aluminum as the base plate under different laser energies and laser spot diameters. Besides, the microstructure and mechanical properties of the welding joints are also investigated. The wavy interface is observed by metallographic investigation which is similar to explosive welding and electromagnetic pulse welding. Moreover, the micro-hardness taken from the interface region shows an obvious improvement compared with the base metal. It is also found that laser shock welding results in fine grained structure of titanium on the weld interface. In conclusion, laser shock welding can not only improve the material microstructure of weld interface, but also avoid the heat affected zone and formation of intermetallic phase during dissimilar metal welding. Therefore, it is a promising welding technology in the field of MEMS.

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Abhinand. "Numerical Simulation of Friction Stir Welding for Dissimilar Metal Welding." Materials Today: Proceedings 4, no. 10 (2017): 11265–69. http://dx.doi.org/10.1016/j.matpr.2017.09.049.

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35

Thonondaeng, Thanaporn, Kittichai Fakpan, and Krittee Eidhed. "Dissimilar Metals Welding of CP Titanium to 304 Stainless Steel Using GTAW Process." Applied Mechanics and Materials 848 (July 2016): 43–47. http://dx.doi.org/10.4028/www.scientific.net/amm.848.43.

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This study involves V-groove butt welding of CP Titanium to 304 stainless steel by the gas tungsten arc welding (GTAW) process without and with buttering layer at the 304 stainless steel base metal. ERCuSn-A and ERNiCu-7 were chosen as a filler metals. Investigations including visual testing (VT), microhardness testing and metallurgical analysis were carried out by means of variable welding parameters. The experimental results showed that using the ERCuSn-A filler metal without and with buttering layer, any surface defect was not observed in the dissimilar metals welded specimen but an underbead crack was found at weld metal adjacent to the Ti/weld metal interface. Using the ERNiCu-7 filler metal without buttering layer, linear porosity was observed at weldment. However, using ERNiCu-7 filler metal with buttering layer, defect-free welded specimen could be achieved. The results of EDS analysis indicated that at Ti/weld metal interface, Ti diffused from the Ti base metal to the weld metal. At 304 stainless steel/weld metal interface, Fe, Ni and Cr diffused from the 304 stainless steel base metal to the weld metal.

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Thomas, Joby V., K. Thomas Tharian, C. R. Anoop, and P. Chakravarthy. "Influence of Filler Wire Material on Dissimilar Welding of 15-5PH to KC20WN (Haynes 25)." Materials Science Forum 830-831 (September 2015): 298–301. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.298.

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Many of the components/assemblies used in strategic sectors involve dissimilar metal weld joints and dissimilar welding has always imposed challenges in terms of the weld quality because of the physical and chemical mismatches of the base metals. In the present study, dissimilar welding of stainless steel 15-5PH (UNS S15500) to a Cobalt-base super alloy KC20WN (UNS R30605/ Haynes 25) is attempted for specific purpose in space applications. Gas Tungsten Arc Welding is carried out with two types of filler wires, viz., KC20WN and ER 630 (17-4PH). Visual inspection, Dye Penetrant testing and X-ray radiography testing revealed defect free joints and the joints were also characterized for microstructure. Superior properties were observed when welding was carried out with KC20WN filler wire compared to that with ER630 filler wire.

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Chuaiphan, Wichan, Chandra Ambhorn Somrerk, Satian Niltawach, and Banleng Sornil. "Dissimilar Welding between AISI 304 Stainless Steel and AISI 1020 Carbon Steel Plates." Applied Mechanics and Materials 268-270 (December 2012): 283–90. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.283.

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Abstract. This work studied the feasibility of dissimilar welding between AISI 304 stainless steel and AISI 1020 carbon steel plates with the thickness of 15 mm. The processes applied in this work were gas tungsten arc welding (GTAW) and shield metal arc welding (SMAW). Microstructure of weld metal produced by GTAW consists of delta ferrite network in austenite matrix, while the dendrite of delta ferrite finely distributed in austenite matrix was found in the weld produced by SMAW. Hardness values of weld metals produced using these two techniques were superior to those of stainless steel and carbon steel base metals respectively. Weld metals produced by these two processes were qualified under tension and bending. This was justified by the result that the failed part after transverse tensile test was on carbon steel, and no crack was found in weld metal after U-shape bending. Impact test exhibited higher toughness of weld metal produced by GTAW than that produced by SMAW. This might be from microstructure of the former weld as network of delta ferrite in austenite matrix which might help absorb impact energy. Pitting corrosion potential of weld metal produced by GTAW was higher than that produced by SMAW and stainless steel base metal respectively. In the aspect of mechanical and corrosion properties of the weld, GTAW was considered as a promising process that could be used for dissimilar welding between these two metals.

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Kim, Soo Sung, Geun Il Park, and Jin Hyun Koh. "Laser Welding of Dissimilar Sheath Metals." Materials Science Forum 580-582 (June 2008): 493–99. http://dx.doi.org/10.4028/www.scientific.net/msf.580-582.493.

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This work was carried out to obtain sound welds and to select the most suitable binary metal joint among three different dissimilar metal combinations such as Zr-4/Ta, Mo/Ta and Ti/Ta (seal tube/sensor sheath) joints for an instrumented nuclear fuel irradiation test. To do this, the Taguchi experimental method was employed to optimize the experimental data. In addition, metallography, micro-focus x-ray radiography and a hardness test were conducted to examine the welds. From the weld bead appearance, penetration depth and bead width as well as the weld defects standpoint, the Zr-4/Ta joint is suggested for a circumferential joining between a seal tube and a sensor sheath. The optimized welding parameters based on the Zr-4/Ta joint are suggested as well.

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39

Kong, Won Sik, and Chung Seok Kim. "Thermal Aging of Dissimilar-Metal Weld Joints for Reactor Pressurized Vessels at Elevated Temperature." Materials Science Forum 857 (May 2016): 271–75. http://dx.doi.org/10.4028/www.scientific.net/msf.857.271.

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The purpose of this study is to investigate the thermal aging of dissimilar metal welds for reactor pressurized vessels in the primary system of nuclear power plants. The influences of long-term aging of dissimilar-metal welds on microstructural and mechanical characteristics have been studied qualitatively and quantitatively. The dissimilar-metal welds composed of SA 508 Cl.3 low alloy steel and AISI 316L stainless steel are prepared after buttering alloy 82 on the SA 508 side by the gas tungsten arc welding process using Inconel 82 welding consumable. The test specimens are heat-treated at 600°C for 10000 hours at each predetermined aging time to simulate the degraded microstructure of dissimilar-metal welds subjected to high temperature and pressure. The long-term aging tests are interrupted at various stages to obtain the different level of degraded specimens. The microstructural changes in base metals and weld metal have been evaluated by the optical and electron microscope in relation with twins, grains, precipitates, and phase transformation. The residual stress and mechanical softening were also discussed in terms of microstructural changes during long-term aging.

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40

Kimapong, Kittipong, and Surat Triwanapong. "Influence of Gas Metal Arc Welding Parameter on Lap Joint Properties of SS400 Carbon Steel and SUS304 Stainless Steel." Key Engineering Materials 789 (November 2018): 110–14. http://dx.doi.org/10.4028/www.scientific.net/kem.789.110.

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SS400/SUS304 steels lap joint was applied in various industries due to flexible andbeneficial properties of these dissimilar metals joint. Therefore, an investigation for optimization ofa gas metal arc welding (GMAW) for producing the dissimilar metal lap joint should be conductedfor advancing the manufacturing industries. This research applied GMAW with various currents andspeeds to weld SS400/SUS304 lap joint and studied the relationship between the parameters andresuted joint properties. The experiment showed that an increase in the wedling current and a decreasein the welding speed affected to increase the fracture strength, the displacement of the lap joint, andthe joint hardness due to high combination of the materials at the joint interface. The uncombinedmaterials at the carbon steel/weld metal interface had the different hardness and resulted to initiatethe crack that then was propergated until the joint was broken. The weld metal showed the formationof the finer and smaller dendrite structure with increasing the welding current and decreasing thewelding speed.

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Thang, Nguyen Duc, Trinh Van The, and Nguyen Van Duc. "WPS Design of Dissimilar Metal Welds between Austenitic Stainless Steel and Carbon Steel for Building Thermal Power Plants." Advanced Materials Research 1157 (February 2020): 1–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1157.1.

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Dissimilar metal welding (DMW) is frequently used to join stainless steels to other metals in Thermal Power Plants (TPP) and industries. DMW process has been shown to have great advantages for many years. This approach is most often used where a transition in mechanical properties and/or performance in service are required. The objective of this research is to review the basic principles of fusion welding of dissimilar metals.In experiments, the two seamless pipes with 18 mm thick, one modified SS 304L austenitic stainless steel was welded to another modified carbon steel A 106B by means of shielded metal arc (SMAW) and gas tungsten arc (GTAW) welding processes using ER309L and E 309L-16 type of filler metal. Before welding, essential variables were analysed so that creating preliminary welding procedure specifications (pWPS). After welding, weldment was tested by NDT such as visual, penetrant and radiography. Microstructural examinations were carried out including macro and micrographs, grain size analysis, and hardness measurements. Transverse tensile, and face/ root bend testing were carried out. Finally, WPS was established conformance to standards of TPP structure toward to building Nuclear Power Plant in Vietnam.

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42

Jamaludin, Shamsul Baharin, Mohd Noor Mazlee, Shahzan Kamarul A. Kadir, and Khairel Rafezi Ahmad. "Mechanical Properties of Dissimilar Welds between Stainless Steel and Mild Steel." Advanced Materials Research 795 (September 2013): 74–77. http://dx.doi.org/10.4028/www.scientific.net/amr.795.74.

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Joining of stainless steel type 304 to mild steel was carried out using a gas tungsten arc welding (GTAW). Samples were welded using stainless steel welding electrode: (AWS: E308l-16) and mild steel welding electrode: (AWS: E6013). The mechanical properties of welded joint were investigated by tension test. It was observed that, the yield strength and tensile strength of welded samples using mild steel welding electrode were slightly lower than welded samples using stainless steel welding electrode. All welded samples fractured at mild steel base metal indicated that the regions of stainless steel base metal, fusion zone and heat affected zone are stronger than mild steel base metal.

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43

Niknamian, Sorush. "Investigation of Microstructure and Corrosion Resistance of Dissimilar Welded Joint between 304 Stainless Steel and Pure Copper." Budapest International Research in Exact Sciences (BirEx) Journal 1, no. 3 (July 29, 2019): 76–82. http://dx.doi.org/10.33258/birex.v1i3.382.

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Nowadays, welding of dissimilar metals has become significant. In this process, a number of parameters including but not limited to type of electrode, amount of current, preheating temperature, and welding rate, that are essential to be taken into account. For welding of dissimilar metals, various methods are exploited including shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW). The stimulus for studying welding of 304L stainless steel to pure copper originates from difficulties in joining copper parts of water-circulating molds to their steel part. In this study, the welding is performed on plates of steel and copper using SMAW, GTAW and combined SMAW+GTAW welding methods with EL-CuMn2, ENiCrMo-6 and ER70S-4 electrodes. In order to investigate the microstructure and corrosion resistance behavior of welds, the samples were characterized using microstructural study and polarization test. It was observed that among all four welding methods, only combined SMAW+GTAW welding process resulted in successful joint between 304L stainless steel and copper. Both obtained joints possess suitable microstructure and corrosion resistance.

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Pereira, António, Ana Cabrinha, Fábio Rocha, Pedro Marques, Fábio Fernandes, and Ricardo Alves de Sousa. "Dissimilar Metals Laser Welding between DP1000 Steel and Aluminum Alloy 1050." Metals 9, no. 1 (January 18, 2019): 102. http://dx.doi.org/10.3390/met9010102.

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The welding of dissimilar metals was carried out using a pulsed Nd: YAG laser to join DP1000 steel and an aluminum alloy 1050 H111. Two sheets of each metal, with 30 × 14 × 1 mm3, were lap welded, since butt welding proved to be nearly impossible due to the huge thermal conductivity differences and melting temperature differences of these materials. The aim of this research was to find the optimal laser welding parameters based on the mechanical and microstructure investigations. Thus, the welded samples were then subjected to tensile testing to evaluate the quality of the joining operation. The best set of welding parameters was replicated, and the welding joint obtained using these proper parameters was carefully analyzed using optical and scanning electron microscopes. Despite the predicted difficulties of welding two distinct metals, good quality welded joints were achieved. Additionally, some samples performed satisfactorily well in the mechanical tests, reaching tensile strengths close to the original 1050 aluminum alloy.

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Wang, Nan Nan, Ran Feng Qiu, Yang Chun Liu, Shuai Ma, Juan Wang, and Chuang Li. "Analyses of Strategies and Problems in Resistance Spot Welding of Dissimilar Materials." Applied Mechanics and Materials 490-491 (January 2014): 315–18. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.315.

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In this paper, the method of resistance spot welding with cover plate was proposed to weld the materials combination of the metal with high resistance and the metal with low resistance, such as steel/aluminum, titanium/aluminum, titanium/magnesium, and steel/magnesium; and the technique of resistance spot welding with insert sheet was proposed to weld dissimilar materials with low resistance and to weld dissimilar materials with high resistance.

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B T, Anirudhan, Jithin Devasia, Tejaswin Krishna, and Mebin T. Kuruvila. "Manufacturing of a Bimetallic Structure of Stainless Steel and Mild Steel through Wire Arc Additive Manufacturing – A Critical Review." International Journal of Innovative Science and Research Technology 5, no. 6 (July 3, 2020): 679–85. http://dx.doi.org/10.38124/ijisrt20jun583.

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Wire and Arc based Additive Manufacturing, shortly known as WAAM, is one of the most prominent tech- nologies, under Additive Manufacturing, used for extensive production of complex and intricate shapes. This layer by layer deposition method avails arc welding technology; Gas Metal Arc Welding (GMAW), a competitive method in WAAM, is the conducted manufacturing process. It is a sum of heat source, originated from the electric arc, and metal wire as feedstock. The metal wire from the feedstock, melted by arc discharge, is deposited layer by layer. Another material can be added on to the top of deposited layer by replacing the feed wire from the stock, to fabricate a bimetallic structure. The purpose of this study is to collect the salient datum from the joining of two dissimilar metals. A combination of stainless steel and mild steel are considered. Proper deposition parameters, welding current along with voltage, bead width efficiency for both the metals were acquired. As a result, the physical properties of the dissimilar joint were approximate to the bulk material.

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47

Mishra, Akshansh. "Friction Stir Welding of Dissimilar Metal: A Review." International Journal for Research in Applied Science and Engineering Technology 6, no. 1 (January 31, 2018): 1551–59. http://dx.doi.org/10.22214/ijraset.2018.1237.

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Májlinger, Kornél, Eszter Kalácska, and Pasquale Russo Spena. "Gas metal arc welding of dissimilar AHSS sheets." Materials & Design 109 (November 2016): 615–21. http://dx.doi.org/10.1016/j.matdes.2016.07.084.

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MORI, Toshihiko, Kenji HIROTA, Shinkoh SENDA, and Takashi ADACHI. "Pressure Welding of Dissimilar Metal Tubes by PCR." Transactions of the Japan Society of Mechanical Engineers Series C 66, no. 651 (2000): 3778–84. http://dx.doi.org/10.1299/kikaic.66.3778.

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50

Yasui, Toshiaki. "Friction stir welding between aluminum and dissimilar metal." Journal of Japan Institute of Light Metals 71, no. 5 (May 15, 2021): 222–27. http://dx.doi.org/10.2464/jilm.71.222.

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Journal articles on the topic 'Dissimilar metal welding'

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