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Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6

Friction stir spot welding (FSSW) is one of the important variants of the friction stir welding (FSW) process. FSSW has been developed mainly for automotive applications where the different thickness sheets spot welding is essential. In the present work, different thin thickness sheets (1 mm and 2 m...

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Autores principales: Ahmed, Mohamed M. Z., El-Sayed Seleman, Mohamed M., Ahmed, Essam, Reyad, Hagar A., Touileb, Kamel, Albaijan, Ibrahim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9105651/
https://www.ncbi.nlm.nih.gov/pubmed/35591306
http://dx.doi.org/10.3390/ma15092971
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author Ahmed, Mohamed M. Z.
El-Sayed Seleman, Mohamed M.
Ahmed, Essam
Reyad, Hagar A.
Touileb, Kamel
Albaijan, Ibrahim
author_facet Ahmed, Mohamed M. Z.
El-Sayed Seleman, Mohamed M.
Ahmed, Essam
Reyad, Hagar A.
Touileb, Kamel
Albaijan, Ibrahim
author_sort Ahmed, Mohamed M. Z.
collection PubMed
description Friction stir spot welding (FSSW) is one of the important variants of the friction stir welding (FSW) process. FSSW has been developed mainly for automotive applications where the different thickness sheets spot welding is essential. In the present work, different thin thickness sheets (1 mm and 2 mm) of AA6082-T6 were welded using FSSW at a constant dwell time of 3 s and different rotation speeds of 400, 600, 800, and 1000 rpm. The FSSW heat input was calculated, and the temperature cycle experience during the FSSW process was recorded. Both starting materials and produced FSSW joints were investigated by macro- and microstructural investigation, a hardness test, and a tensile shear test, and the fractured surfaces were examined using a scanning electron microscope (SEM). The macro examination showed that defect-free spot joints were produced at a wide range of rotation speeds (400–1000 rpm). The microstructural results in terms of grain refining of the stir zone (SZ) of the joints show good support for the mechanical properties of FSSW joints. It was found that the best welding condition was 600 rpm for achieving different thin sheet thicknesses spot joints with the SZ hardness of 95 ± 2 HV0.5 and a tensile shear load of 4300 ± 30 N.
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spelling pubmed-91056512022-05-14 Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6 Ahmed, Mohamed M. Z. El-Sayed Seleman, Mohamed M. Ahmed, Essam Reyad, Hagar A. Touileb, Kamel Albaijan, Ibrahim Materials (Basel) Article Friction stir spot welding (FSSW) is one of the important variants of the friction stir welding (FSW) process. FSSW has been developed mainly for automotive applications where the different thickness sheets spot welding is essential. In the present work, different thin thickness sheets (1 mm and 2 mm) of AA6082-T6 were welded using FSSW at a constant dwell time of 3 s and different rotation speeds of 400, 600, 800, and 1000 rpm. The FSSW heat input was calculated, and the temperature cycle experience during the FSSW process was recorded. Both starting materials and produced FSSW joints were investigated by macro- and microstructural investigation, a hardness test, and a tensile shear test, and the fractured surfaces were examined using a scanning electron microscope (SEM). The macro examination showed that defect-free spot joints were produced at a wide range of rotation speeds (400–1000 rpm). The microstructural results in terms of grain refining of the stir zone (SZ) of the joints show good support for the mechanical properties of FSSW joints. It was found that the best welding condition was 600 rpm for achieving different thin sheet thicknesses spot joints with the SZ hardness of 95 ± 2 HV0.5 and a tensile shear load of 4300 ± 30 N. MDPI 2022-04-19 /pmc/articles/PMC9105651/ /pubmed/35591306 http://dx.doi.org/10.3390/ma15092971 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ahmed, Mohamed M. Z.
El-Sayed Seleman, Mohamed M.
Ahmed, Essam
Reyad, Hagar A.
Touileb, Kamel
Albaijan, Ibrahim
Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title_full Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title_fullStr Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title_full_unstemmed Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title_short Friction Stir Spot Welding of Different Thickness Sheets of Aluminum Alloy AA6082-T6
title_sort friction stir spot welding of different thickness sheets of aluminum alloy aa6082-t6
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9105651/
https://www.ncbi.nlm.nih.gov/pubmed/35591306
http://dx.doi.org/10.3390/ma15092971
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