Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy

One of the most important negative consequence in the fusion welding processes is the generation of tensile residual stresses in welded joints. The main goals of this work are to determine the optimal combination of welding parameters to minimize the residual stress level and the influence of each w...

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Main Authors: Sharlane Costa, Maria S. Souza, Manuel B. César, José Gonçalves, João E. Ribeiro
Format: Article
Language:English
Published: AIMS Press 2021-04-01
Series:AIMS Materials Science
Subjects:
Online Access:https://www.aimspress.com/article/doi/10.3934/matersci.2021018?viewType=HTML
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author Sharlane Costa
Maria S. Souza
Manuel B. César
José Gonçalves
João E. Ribeiro
author_facet Sharlane Costa
Maria S. Souza
Manuel B. César
José Gonçalves
João E. Ribeiro
author_sort Sharlane Costa
collection DOAJ
description One of the most important negative consequence in the fusion welding processes is the generation of tensile residual stresses in welded joints. The main goals of this work are to determine the optimal combination of welding parameters to minimize the residual stress level and the influence of each welding parameter in that feature to weld 6082-T6 aluminum alloy plates using the GMAW welding process. To achieve these goals was implemented the Taguchi orthogonal array (L27) to define the design of numerical and experimental tests. All combinations were simulated in the Simufactwelding 6.0 software, from which it was possible to obtain the values of maximum residual stresses. The data treatment was carried out, reaching the combination of levels for each parameter. With ANOVA analysis was found that the parameter with the greatest influence in the residual stress generation was the welding speed, while the parameter with the least influence was the torch angle. Also, to minimize the residual stresses it was observed that the optimal combination of welding parameters is welding current intensity of 202 A, welding speed of 10 mm/s, and 30° of inclination of the angular torch. The two simulations that resulted in the highest and lowest residual stresses were validated experimentally by the hole drilling method to measure the residual stresses.
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spelling doaj.art-8c75d3f7812b4cebba06c71f315893ff2022-12-21T22:53:52ZengAIMS PressAIMS Materials Science2372-04842021-04-018227128210.3934/matersci.2021018Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloySharlane Costa0Maria S. Souza 1Manuel B. César2José Gonçalves3João E. Ribeiro41. Mechanical Engineering Department, University of Minho, Guimarães, Portugal2. CMEMS, University of Minho, Guimarães, Portugal3. School of Technology and Management, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal 4. CONSTRUCT-LESE, FEUP, Dr. Roberto Frias Street, 4200-465 Porto, Portugal3. School of Technology and Management, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal5. CeDRI, Campus de Santa Apolónia, 5300-253 Bragança, Portugal3. School of Technology and Management, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal6. CIMO, Campus de Santa Apolónia, 5300-253 Bragança, PortugalOne of the most important negative consequence in the fusion welding processes is the generation of tensile residual stresses in welded joints. The main goals of this work are to determine the optimal combination of welding parameters to minimize the residual stress level and the influence of each welding parameter in that feature to weld 6082-T6 aluminum alloy plates using the GMAW welding process. To achieve these goals was implemented the Taguchi orthogonal array (L27) to define the design of numerical and experimental tests. All combinations were simulated in the Simufactwelding 6.0 software, from which it was possible to obtain the values of maximum residual stresses. The data treatment was carried out, reaching the combination of levels for each parameter. With ANOVA analysis was found that the parameter with the greatest influence in the residual stress generation was the welding speed, while the parameter with the least influence was the torch angle. Also, to minimize the residual stresses it was observed that the optimal combination of welding parameters is welding current intensity of 202 A, welding speed of 10 mm/s, and 30° of inclination of the angular torch. The two simulations that resulted in the highest and lowest residual stresses were validated experimentally by the hole drilling method to measure the residual stresses.https://www.aimspress.com/article/doi/10.3934/matersci.2021018?viewType=HTMLgmawresidual stresseswelding parameterstaguchi methodaluminum alloywelding numerical simulationhole-drilling method
spellingShingle Sharlane Costa
Maria S. Souza
Manuel B. César
José Gonçalves
João E. Ribeiro
Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
AIMS Materials Science
gmaw
residual stresses
welding parameters
taguchi method
aluminum alloy
welding numerical simulation
hole-drilling method
title Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
title_full Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
title_fullStr Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
title_full_unstemmed Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
title_short Experimental and numerical study to minimize the residual stresses in welding of 6082-T6 aluminum alloy
title_sort experimental and numerical study to minimize the residual stresses in welding of 6082 t6 aluminum alloy
topic gmaw
residual stresses
welding parameters
taguchi method
aluminum alloy
welding numerical simulation
hole-drilling method
url https://www.aimspress.com/article/doi/10.3934/matersci.2021018?viewType=HTML
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