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Dissertations / Theses on the topic 'Aluminium welding'

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Published: 4 June 2021

Last updated: 30 January 2023

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1

Forsman, Tomas. "Laser welding of aluminium alloys /." Luleå, 2000. http://epubl.luth.se/1402-1544/2000/39/index.html.

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2

Yoon, Jong Won. "Laser welding of aluminium alloys." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343303.

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3

Okon, Panton. "Laser conduction welding of aluminium alloys." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400234.

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4

Forsman, Tomas. "Nd:YAG laser welding of aluminium alloys." Licentiate thesis, Luleå tekniska universitet, 1998. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25956.

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5

Dray, A. E. "Diffusion bonding of aluminium." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382557.

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6

Peel, Matthew J. "Friction-stir welding of dissimilar aluminium alloys." Thesis, University of Manchester, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488339.

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7

Al-Jumaili, Omar Saad Salih. "Investigation of friction stir welding of aluminium alloy and aluminium matrix composites." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/55637/.

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Friction stir welding (FSW) is an upgraded version of the conventional friction welding process, and it is considered the latest development and the most important one during the past two decades in the welding of metals. The dependence of FSW on friction and plastic work as a heat source precludes the melting in the workpiece and leads to avoiding many of the difficulties arising from the change in the state of the material, such as defects, distortion and residual stresses, which often happen in conventional welding processes. FSW gained significant attention as a solid-state welding process

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8

Minton, Timothy J. "Friction stir welding of commercially available superplastic aluminium." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4247.

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A series of Friction Stir Welds (FSW) has been produced in order to optimise tool designs and weld/process variables to minimise flaws in the weld and obtain the best possible microstructure for superplastic Forming (SPF). Therefore the main goal is to produce friction stir welds which do not fail during subsequent SPF processes. The friction stir welds have been created using novel tools which are oversized for the material thickness used; this creates a wider weld region of fine equiaxed grains which are suitable for SPF. These original tools have been compared to tools which are already in

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9

Ooi, Cheng Lee. "Waveform effects in bipolar TIG welding of aluminium." Thesis, Cranfield University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283811.

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10

Stephen, Michael George. "Development and analysis of a friction stir spot welding process for aluminium." Thesis, Nelson Mandela Metropolitan University, 2005. http://hdl.handle.net/10948/1351.

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Friction Stir Spot Welding (FSSW) has been developed from the conventional Friction Stir Welding (FSW) process, developed at The Welding Institute (TWI). FSSWs have been done without the keyhole being eliminated. Elimination of the keyhole would result in the process being more commercially viable. This dissertation focuses on an attempt of eliminating the keyhole using a retractable pin tool as well as a comparison of the weld integrity of a FSSW to that of a conventional Resistance Spot Weld (RSW). Welds were conducted on aluminium alloy 6063 T4. Comparisons between different weld procedures

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11

Trautmann, Andreas. "Bifocal hybrid laser welding : a technology for welding of aluminium and zinc-coated steels /." München : Utz, 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=9783831608768.

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12

Trautmann, Andreas. "Bifocal hybrid laser welding a technology for welding of aluminium and zinc-coated steels." München Utz, 2008. http://d-nb.info/992520797/04.

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13

Tan, Colin C. M. "Automation of some aspects of TIG welding." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235509.

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14

Sued, Mohammad Kamil. "Fixed bobbin friction stir welding of marine grade aluminium." Thesis, University of Canterbury. Mechanical Engineering, 2015. http://hdl.handle.net/10092/10729.

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PROBLEM - The bobbin friction stir welding (BFSW) process has potential benefits for welding thin sheet aluminium alloy. The main benefits of friction stir welding over conventional thermal welding processes are minimisation of energy usage, no need for consumables, potential for good weld quality without porosity, no fumes, minimal adverse environmental effects (green), minimal waste (lean), and reduced threats to personal health and safety. The BFSW process has further advantages over conventional friction stir welding (CFSW) in the reduction of welding forces, faster welding, and less fixtu

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15

Chen, Jie. "Modelling of Laser Welding of Aluminium using COMSOL Multiphysics." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284448.

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This thesis presents a modelling approach of laser welding process of aluminium alloy from the thermo-mechanical point of view to evaluate the occurrence of hot cracking based on simulation results and relevant criteria. The model was created stepwise in COMSOL Multiphysics, starting with the thermal model where heat conduction of solid and liquid phase was computed. Then the CFD model was created by involving the driving forces of liquid motion in the weld pool, i.e. natural convection and Marangoni effect. Lastly, the temperature profile calculated by the CFD model was loaded into the mechan

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16

Xu, Lei. "Controlling interfacial reaction in aluminium to steel dissimilar metal welding." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/controlling-interfacial-reaction-in-aluminium-to-steel-dissimilar-metal-welding(721d3009-de49-434c-bd81-b01ff5973706).html.

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Two different aluminium alloys, AA6111 (Al-Mg-Si) and AA7055 (Al-Mg-Zn), were chosen as the aluminium alloys to be welded with DC04, and two welding methods (USW and FSSW) were selected to prepare the welds. Selected pre-welded joints were then annealed at T=400 - 570oC for different times. Kinetics growth data was collected from the microstructure results, and the growth behaviour of the IMC layer was found to fit the parabolic growth law. A grain growth model was built to predict the grain size as a function of annealing time. A double-IMC phase diffusion model was applied, together with gra

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17

De, Bono Paola. "Laser welding of copper and aluminium alloys for electrical interconnects." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6898/.

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The adoption of lithium-ion and/or super-capacitor battery technologies is a current hot topic in the automotive industry. For both battery types, the terminals and busbars are manufactured from copper (Cu) and/or aluminium-based (Al-based) alloys, as a result of their high electrical and thermal conductivities. Laser welding is considered an attractive process to industry due to its easy auto-motability, high processing speed and highly repeatable cost-effective processing. However, laser welding of monometallic and dissimilar Cu and A1 presents several difficulties due to the high surface re

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18

Serrano, G. L. "Variable polarity plasma arc welding of high strength aluminium alloys." Thesis, Cranfield University, 2004. http://dspace.lib.cranfield.ac.uk/handle/1826/10746.

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The VPP A W process has been evaluated and optimised for the joining of high strength aluminium alloys AA-2024 T351, AA-7150 W51 and AA-7150 T651. The initial experimentation was performed with conventional AC-GTAW power supplies with limited results. Failure of the control logic to stabilise the welding process or arc extinction became an issue. Not until a suitable VPP AW power source became available were sound welding conditions developed. Still, a great effort was placed in optimising the process. Factors such as the welding torch, the electrode composition, the plasma nozzle geometry, th

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19

Serrano, Gabriel L. "Variable polarity plasma arc welding of high strength aluminium alloys." Thesis, Cranfield University, 2004. http://dspace.lib.cranfield.ac.uk/handle/1826/10746.

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The VPP A W process has been evaluated and optimised for the joining of high strength aluminium alloys AA-2024 T351, AA-7150 W51 and AA-7150 T651. The initial experimentation was performed with conventional AC-GTAW power supplies with limited results. Failure of the control logic to stabilise the welding process or arc extinction became an issue. Not until a suitable VPP AW power source became available were sound welding conditions developed. Still, a great effort was placed in optimising the process. Factors such as the welding torch, the electrode composition, the plasma nozzle geometry, th

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20

Aalderink, Bernard Johan. "Sensing, monitoring and control for laser based welding of aluminium sheets." Enschede : University of Twente [Host], 2007. http://doc.utwente.nl/58019.

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21

Pickin, Craig Graeme. "Arc welding of high strength aluminium alloys for armour systems applications." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7217.

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The ternary Al-Cu-Mg system 2xxx series aluminium alloys were examined as construction materials for armour system applications based upon comparable ballistic properties to the currently employed Al-7xxx series alloys. Utilising MIG welding solidification cracking was evident when welding constrained Al-2024 candidate base material using Al-2319 filler, the only available consumable wire for this series. A previously developed thermodynamic model suggested that an incompatible weld chemistry resulted when welding with this filler which would result in hot cracking due to a wide weld pool free

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22

Zhang, Chaoqun. "Ultrasonic welding of aluminium to titanium : microstructure, properties, and alloying effects." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/ultrasonic-welding-of-aluminium-to-titanium-microstructure-properties-and-alloying-effects(1aaec7d7-19dd-4524-bde4-e6ffef5217a0).html.

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Use of welded titanium alloy to aluminium alloy structures in the aerospace industry has a number of potential benefits for both cost and weight saving by enabling titanium to be used only in the most critical parts, with the cheaper and lighter aluminum alloy making up the rest of the structure. However, due to the formation of brittle intermetallic compounds (IMC) at interface and the enormous gap in melting point, the welding of titanium to aluminium remains a major challenge. Solid state welding processes are most likely to be successful since they do not involve any melting, and so issues

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23

Guerin, Baptiste jean patrice. "Soudage d'alliages d'aluminium par la technologie Friction Stir Welding Bobbin Tool." Thesis, Saint-Etienne, EMSE, 2010. http://www.theses.fr/2010EMSE0567/document.

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Dans le domaine des matériaux métalliques, les techniques d’assemblage par soudageconduisent à des réductions de masse et de coûts importantes susceptibles d’intéresserles industries aéronautiques. Néanmoins, les procédés de soudage classiquespar fusion ne s’appliquent pas aux dernières générations d’alliages d’aluminium aéronautiques.Dans ce contexte, le procédé de soudage Friction Stir Welding présentedes atouts considérables, de nature à rendre compétitives les structures métalliquesface à la montée en puissance des matériaux composites.L’objectif de cette thèse est double. Il s’agit d’une

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24

Frigaard, Øyvind. "A process model for friction stir welding of age hardening aluminium alloys." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 1999. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1759.

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25

Hennig, Martin. "Laser-assisted friction stir welding of magnesium and magnesium/aluminium dissimilar joints." Master's thesis, Pontificia Universidad Católica del Perú, 2013. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6241.

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The present master thesis is dealing with the influence of workpiece temperature in the process loads, generated during the FSW process. The investigation is focused on welding of the magnesium alloy AZ31. To affect the initial temperature of the joining members, two different methods are investigated. by using a laser, the material is heated and soften local direct in front of the welding tool. In contrast, a heating element, located beneath the workpieces, enable the heating of a laser area. The consequences of both methods are regarded and compared in the investigation. In addition, the com

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26

Thomas, A. W. "Parameter development for the MIG welding of high strength aerospace aluminium alloys." Thesis, Cranfield University, 2000. http://dspace.lib.cranfield.ac.uk/handle/1826/10762.

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Both dip and pulsed modes of metal transfer were investigated to establish which method produced the better bead geometry and penetration on 2024 and 2014 aluminium alloys using 2319 filler wire. The MIG electrode configuration used was electrode positive, which provides cathodic cleaning for aluminium alloys. Some initial work was also carried out using 6013 with 2319 as the consumable. A second part of the project involved the investigation of different combinations of shielding gas, and during both this and the previous task it was necessary to adjust the welding parameters to achieve accep

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27

Thomas, Angus W. "Parameter development for the MIG welding of high strength aerospace aluminium alloys." Thesis, Cranfield University, 2000. http://dspace.lib.cranfield.ac.uk/handle/1826/10762.

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Both dip and pulsed modes of metal transfer were investigated to establish which method produced the better bead geometry and penetration on 2024 and 2014 aluminium alloys using 2319 filler wire. The MIG electrode configuration used was electrode positive, which provides cathodic cleaning for aluminium alloys. Some initial work was also carried out using 6013 with 2319 as the consumable. A second part of the project involved the investigation of different combinations of shielding gas, and during both this and the previous task it was necessary to adjust the welding parameters to achieve accep

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28

Danka, Labus Zlatanović. "Friction stir spot welding of ultrathin sheets made of aluminium – magnesium alloy." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114672&source=NDLTD&language=en.

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Within the framework of presented PhD, friction stir spot welding (FSSW) ofmultiple ultrathin sheets of AA 5754 – H111 (AlMg3) alloy 0.3 mm thick, wasstudied. The influence of tool geometry and process parameters such as rotationalspeed and axial load have been analysed using numerous techniques. It has beenunderstood that during the welding at low rotational speeds weld zone undergoesstrain hardening, while at high rotational speeds weld zone undergoes thermalsoftening. It was observed that during FSSW at low rotational speeds a complexlayer at weld interface is present, which causes de

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29

Ericsson, Mats. "Fatigue Strength of Friction Stir Welded Joints in Aluminium." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-160.

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30

Al, Shaer Ahmad Wael. "Porosity reduction and elimination in laser welding of AA6014 aluminium alloys for automotive components manufacture and industrial applications." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/porosity-reduction-and-elimination-in-laser-welding-of-aa6014-aluminium-alloys-for-automotive-components-manufacture-and-industrial-applications(75874ee5-b55e-4c72-a8dc-c008dcf54e28).html.

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Automotive and aerospace industries consume a significant amount of Al alloys in structures and framing. There is, however, a significant challenge to join the alloy components by laser welding. A key problem is the presence of large amount of porosity in the welds. This research work aimed to understand factors affecting porosity formation in laser welding of AA6014 Al alloy and identification and verification of a suitable method for the porosity reduction and elimination. AC-170PX (AA6014) Al alloy was welded, for the first time, using a 5 kW disk laser in two different configurations: fill

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31

Robe, Hugo. "Apports à la compréhension du soudage FSW hétérogène d’alliages d’aluminium par une approche expérimentale et numérique." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEE005/document.

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L’allègement des structures est actuellement un enjeu industriel majeur. L’utilisation de certains alliages d’aluminium couplés à de nouveaux procédés d’assemblages est une bonne réponse à cette problématique. Le procédé de soudage FSW permet notamment la réalisation d’assemblages multi-matériaux en s’affranchissant des problèmes de fusion. Cette étude, réalisée au sein de l’entreprise TRA-C industrie, s’est intéressée plus particulièrement au cas du soudage FSW hétérogène d’alliages d’aluminium des séries 2xxx (Al-Cu-Mg-Ag) et 7xxx (Al-Zn-Mg), dans une large gamme de paramètres industriels. L

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32

Ros, García Adrián, and Silva Luis Bujalance. "Laser welding for battery cells of hybrid vehicles." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17588.

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The report is an overview article, as a result of our investigation at the field of laser welding applied to electromobility cells manufactured in an aluminium housing. This project was proposed by the University of Skövde in collaboration with ASSAR Centre. The key results presented are based on the study of the following parameters: laser type and power, shielding gases, welding modes, patterns and layout. The conclusions of the project define the final selection of each parameter in order to achieve minimum defects and optimal electrical performance by minimizing the contact resistance.

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33

Tzevelekos, P. "Development and application of advanced plasma welding techniques for high strength aluminium alloys." Thesis, Cranfield University, 1999. http://dspace.lib.cranfield.ac.uk/handle/1826/11395.

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The main aims of this study are to generate a methodology for the optimisation of welding procedures for plasma welding of thin sheet aluminium alloys and to investigate weld quality modelling. Emphasis is focused on the recognition and evaluation of the consecutive stages of welding procedure development and on the formulation of a generalised procedural methodology that is potentially applicable to other processes and materials. The materials under investigation were 1.6 mm thick sheet 6013, 2024 and 7475 alloys, representing the major medium and high strength heat treatable aluminium groups

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34

Mendes, Luís Gonçalves. "Production of aluminium based composites reinforced with embedded NiTi by friction stir welding." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8764.

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Dissertação para a obtenção do grau de Mestre em Engenharia Mecânica<br>Aluminium alloys have been widely used in composite materials in order to promote an enhancement in its properties while reducing weight. As in the production of new composites with a significant difference in mechanical and thermo-physical properties fusion welding processes enhances the formation of undesired intermetallics. Those limitations have driven research on solid state technologies, such as Friction Stir Welding (FSW), for joining dissimilar materials. This study aimed to develop composites in AA 1XXX series al

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35

Ratanathavorn, Wallop. "Dissimilar joining of aluminium to ultra-high strength steels by friction stir welding." Doctoral thesis, KTH, Svetsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-207356.

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Multi-material structures are increasingly used in vehicle bodies to reduce weight of cars. The use of these lightweight structures is driven by requirements to improve fuel economy and reduce CO2 emissions. The automotive industry has replaced conventional steel components by lighter metals such as aluminium alloy. This is done together with cutting weight of structures using more advanced strength steels. However, sound joining is still difficult to achieve due to differences in chemical and thermal properties. This research aims to develop a new innovative welding technique for joining al

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36

Martins, Meco Sonia Andreia. "Joining of steel to aluminium alloys for advanced structural applications." Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/10288.

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When joining steel to aluminium there is a reaction between iron and aluminium which results in the formation of brittle intermetallic compounds (IMC). These compounds are usually the reason for the poor mechanical strength of the dissimilar metallic joints. The research on dissimilar metal joining is vast but is mainly focused on the automotive industry and therefore, the material in use is very thin, usually less than 1 mm. For materials with thicker sections the present solution is a transition joint made by explosion welding which permits joining of steel to aluminium and avoids the format

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37

Proton, Vincent. "Caractérisation et compréhension du comportement en corrosion de structures en alliage d'aluminium-cuivre-lithium 2050 assemblées par Friction Stir Welding (FSW)." Phd thesis, Toulouse, INPT, 2012. http://oatao.univ-toulouse.fr/8303/1/proton.pdf.

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A l'heure où les matériaux composites prennent une part toujours plus importante dans les structures aéronautiques, l'utilisation de l'alliage d'aluminium-lithium 2050 assemblé par Friction Stir Welding (FSW) est envisagé pour remplacer les structures rivetées en alliages d'aluminium traditionnels. L'objectif global de ce travail de thèse était d'étudier le comportement en corrosion et en corrosion sous contrainte de joints soudés FSW de l'alliage d'aluminium-lithium 2050 mais aussi l'influence d'un post-traitement thermique sur les comportements observés. Dans ce but, la microstructure, le co

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38

Momeni, Mahboubeh. "Development of a right angle friction stir welding (RAFSW) technique to assemble aluminum products." Doctoral thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/70265.

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Aujourd'hui, le soudage par friction-malaxage (FSW) a attiré beaucoup d'attention dans les secteurs universitaires et industriels. Malgré ses avantages importants par rapport aux techniques de soudage par fusion, il n'est pas largement utilisé dans l'industrie actuelle, principalement en raison des coûts d'équipement élevés et des redevances. Certaines autres raisons sont les forces de processus élevées, le besoin d'un serrage puissant, le manque de directives concernant la fenêtre de travail efficace des paramètres du processus et l'effet du traitement thermique après soudage. En outre, il es

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39

Panteli, Alexandra Hannah. "Friction joining of aluminium-to-magnesium for lightweight automotive applications." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/friction-joining-of-aluminiumtomagnesium-for-lightweight-automotive-applications(00c7f0f5-ae47-412f-8ac8-d9e8c0ef29c5).html.

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Friction joining techniques, such as Friction Stir Spot Welding (FSSW) and high power Ultrasonic Welding (USW), could offer a solution for joining dissimilar materials combinations, such as aluminium (Al) to magnesium (Mg), where high intermetallic reaction rates make the use of conventional joining techniques problematic. Ultrasonic welds have been produced between 1 mm gauge Al 6111-T4 and Mg AZ31-H24 sheets, and the interfacial reaction has been studied as a function of welding time. For this welding system, the mechanical properties of the joints were optimised when a double reed welding s

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40

Enz, Josephin [Verfasser], and Norbert [Akademischer Betreuer] Huber. "Laser beam welding of high-alloyed aluminium-zinc alloys / Josephin Enz ; Betreuer: Norbert Huber." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2017. http://d-nb.info/1138276995/34.

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41

Wang, Yin. "A metallurgical approach for controlling interfacial reaction in aluminium to magnesium dissimilar metal welding." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/a-metallurgical-approach-for-controlling-interfacial-reaction-in-aluminium-to-magnesium-dissimilar-metal-welding(baf9186c-449e-44f3-9a1e-20dfde48b966).html.

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Dissimilar welding of Al to Mg alloys could potentially find significant application in the automobile industry, if the massive production of brittle intermetallic compounds (IMCs) at the joint interface can be prevented. In order to better understand Al-Mg IMC reactions, a comprehensive investigation of the interfacial region in AA6111 - AZ31 diffusion couples was carried out in this research. Three Al-Mg binary IMCs, namely the -Al12Mg17, -AlMg and -Al3Mg2 phases, were observed to form in the Al - Mg diffusion couple. In both the Al3Mg2 and Al12Mg17 layers, residual stresses were dete

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42

Gascoyne, Samuel John. "A microstructural investigation into the stationary shoulder corner friction stir welding of aluminium alloys." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/9283/.

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A microstructural investigation was performed on a new type of friction joining – stationary shoulder corner friction stir welding (SSCFSW). This technique involves welding at a 45° angle and using filler materials in order to produce rounded corner welds. The filler materials were later coated in copper to ascertain the flow behaviour of the material and to determine what happens to the interface between the vertical and horizontal columns being welded. A new phenomenon – the so called “blades” effect – demonstrated two clearly defined regions within the dynamically recrystallised zone (DRX)

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43

Abuaisha, Ramadan R. "Corrosion behaviour of friction stir welded AA5xxx aluminium alloys." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/corrosion-behaviour-of-friction-stir-welded-aa5xxx-aluminium-alloys(294cf75f-2769-49b7-b30e-f63c8c8e9e72).html.

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Friction stir welding (FSW) is a well recognised method for joining aluminium alloys and other engineering materials at a temperature below their melting point. However, the microstructure of the alloys may be modified during the welding process due to frictional heat and severe plastic deformation. In this study, the microstructures of friction stir welded AA5754-H111 and AA5083-O aluminium alloys have been investigated using optical microscopy, transmission and scanning electron microscopy equipped with electron backscatter diffraction (EBSD) and energy dispersive x-ray (EDX) facilities. Typ

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44

Rodrigues, Pardal Goncalo Nuno. "Joining of steel to aluminium and stainless steel to titanium for engineering applications." Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/10007.

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Dissimilar welding has been subject of several investigations due to its potential importance in various industrial fields such as transportation, energy generation and management. Dissimilar welding can increase the design efficiency, by the use of complementary alloys with different properties, cost cutting and light weighting structures. The use of different materials within a component or structure to best suit a particular task, requirement or increase its life and performance has always been an ambition of several designers and engineers. This project investigated the joining steel and a

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Akinlabi, Esther Titilayo. "Characterisation of dissimilar friction stir welds between 5754 Aluminium alloy and C11000 copper." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1536.

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Friction Stir Welding (FSW) is a solid state welding process invented and patented by The Welding Institute (TWI) in 1991, for joining ferrous and non-ferrous materials1. The FSW of Aluminium and its alloys has been commercialised; and recent interest is focused on joining dissimilar materials. However, in order to commercialise the process, research studies are required to characterise and establish process windows. This research work through material characterisation of the welded joints establishes a process window for the Friction Stir welding of 5754 Aluminium Alloy and C11000 Copper. Fur

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Ratanathavorn, Wallop. "Development and evaluation of hybrid joining for metals to polymers using friction stir welding." Licentiate thesis, KTH, Industriell produktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173232.

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Combinations of different materials are increasingly used in the modern engineering structures. The driving forces of this trend are rising fuel costs, global warming, customer demands and strict emission standards. Engineers and industries are forced to improve fuel economy and cut emissions by introducing newly design engines and lightweighting of structural components. The use of lightweight materials in the structures has proved successful to solve these problems in many industries especially automobile and aerospace. However, industry still lacks knowledge how to manufacture components fr

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Theron, Maritha. "Quenching and tempering effects on Rheo-cast F357 aluminium alloy during Nd: YAG laser welding." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/26148.

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Al-Si-Mg casting alloys are being used in automotive applications, aerospace applications and other applications requiring heat-treatable permanent mould castings that combine good weldability with high strength and toughness (ASM). These casting alloys are also known for their excellent castability, corrosion resistance and, in particular, .a range of mechanical properties in the heattreated condition. A357 aluminum alloy has been extensively used for semi-solid processing for more than three decades, and a large amount of components like fuel rails, engine mounts, engine brackets and suspens

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Mahdavi, Shahri Meysam. "Fatigue Assessment of Friction Stir Welded Joints in Aluminium Profiles." Doctoral thesis, KTH, Materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92157.

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Friction stir welding (FSW) is a low heat input solid state welding technology. It is often used for fabrication of aluminium alloys in transportation applications including railway, shipbuilding, bridge structures and automotive components. In these applications the material is frequently subject to varying load conditions and fatigue failure is a critical issue. In most cases standard codes and fatigue guidelines for aluminium welded joints address only welded structures with conventional welding methods but not those with FSW procedure. In the scope of this thesis fatigue life assessment of

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Eksi, Murat. "Optimization Of Mechanical And Microstructural Properties Of Weld Joints Between Aluminium-magnesium And Aluminium-magnesium-silicon Alloys With Different Thicknesses." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615649/index.pdf.

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For the last decades usage of aluminium alloys have been increasing tremendously. They have been used in aerospace industry widely and now aluminium alloys are becoming more and more popular in automotive and defense industries. Consequently<br>successful welding of aluminium alloys gains importance. In this study a research is carried out on eldability of plates having different thicknesses of composition 5754 aluminium and 6063 aluminium in T-fillet geometry using Gas-metal Arc Welding technique. It was aimed to have a successful joint without using pre-weld and post-weld heat treatments. Du

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Komlódi, Attila. "Detection and prevention of hot cracks during laser welding of aluminium alloys using advanced simulation methods /." Bamberg : Meisenbach, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2885432&prov=M&dok_var=1&dok_ext=htm.

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