Effects of welding parameters and welding sequence on residual stress and distortion in Al6061-T6 aluminum alloy for T-shaped welded joint |
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| Affiliation: | 1. Department of Marine Technology, Amirkabir University of Technology, Tehran, Iran;2. Faculty of Technology and Engineering (East of Guilan), University of Guilan, Rudsar, Iran;1. Materials Analysis and Evaluation Research Center, Research Institute of Petroleum Industry (RIPI), Tehran 18745-4163, Iran;2. Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran 15875-1774, Iran;1. State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China;2. School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia;3. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China;1. Amazon Natural Resources Engineering Postgraduate Program PRODERNA, Institute of Technology ITEC, Federal University of Pará UFPA, Belém, PA, Brazil;2. Mechanical Engineering Postgraduate Program PPGEM, Institute of Technology ITEC, Federal University of Pará UFPA, Belém, PA, Brazil;3. Naval Engineering Postgraduate Program - PPGENAV, Institute of Technology ITEC, Federal University of Pará UFPA, Belém, PA, Brazil;4. Federal University of Pará - UFPA, Belém, PA, Brazil |
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| Abstract: | The distribution of temperature and then the distribution of residual stress and distortion in the stiffened aluminum alloy Al6061-T6 plates under the metal inert gas (MIG) welding process were investigated by three dimensional thermo-mechanical coupled finite element model using Ansys software. The properties of materials were considered temperature-dependent and the filler metal was added to the workpiece by the element birth and death technique. In three modes of current, two different speeds and two various sequences, the distribution of residual stress and distortion were calculated and analyzed. The results showed that increase in welding speed decreased the vertical deflection in the plate, transverse shrinkage and angular distortion of plate and the lateral deflection of stiffener, but increased the maximum longitudinal tensile stress in the plate and stiffener. Furthermore, increase in current increased the residual stress and deformation in the plate and stiffener, and the change in the welding sequence changed the distribution of the distortion in the plate and the stiffener without significant change in the distribution of the longitudinal residual stress. |
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| Keywords: | welding parameters welding sequence residual stress distortion |
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