Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy

Refill friction stir spot welding (refill FSSW) was used to weld 3.2-mm-thick 2060 aluminum alloy. Joint formation, defect characteristics and tensile-shear property were analyzed. Results show that keyhole can be completely eliminated under different plunge depths. However, defects such as void, un...

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Main Authors: Yue Wang, Peng Chai
Format: Article
Language:English
Published: Polish Academy of Sciences 2021-05-01
Series:Archives of Metallurgy and Materials
Subjects:
Online Access:https://journals.pan.pl/Content/118800/PDF/AMM-2021-2-14-Yue%20Wang.pdf
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author Yue Wang
Peng Chai
author_facet Yue Wang
Peng Chai
author_sort Yue Wang
collection DOAJ
description Refill friction stir spot welding (refill FSSW) was used to weld 3.2-mm-thick 2060 aluminum alloy. Joint formation, defect characteristics and tensile-shear property were analyzed. Results show that keyhole can be completely eliminated under different plunge depths. However, defects such as void, unconnected welding, hook can be observed under the plunge depths of 3.4-4 mm. The size of the overall void initially increased and then decreased with the increase of the plunge depth, while the void was the smallest under the plunge depth of 3.4 mm. The unconnected defect at the lap interface gradually shrank a welding line from obvious crack. Different hook morphologies were observed under different plunge depths. The tensile-shear load of joint increased with the increase of the plunge depth and was up to the largest under the plunge depth of 4 mm. All the tensile-shear specimens fractured along the lap interface. Compared with the void, the unconnected defect had a greater influence on the tensile-shear property.
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spelling doaj.art-a89d8c8e60e2484fbf3e396f4acc26732022-12-22T03:41:50ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092021-05-01vol. 66No 2451460https://doi.org/10.24425/amm.2021.135878Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum AlloyYue Wang0https://orcid.org/0000-0003-4303-7973Peng Chai1Beihang University, School of Mechanical Engineering and Automation, Beijing 100191, P. R. ChinaBeihang University, School of Mechanical Engineering and Automation, Beijing 100191, P. R. ChinaRefill friction stir spot welding (refill FSSW) was used to weld 3.2-mm-thick 2060 aluminum alloy. Joint formation, defect characteristics and tensile-shear property were analyzed. Results show that keyhole can be completely eliminated under different plunge depths. However, defects such as void, unconnected welding, hook can be observed under the plunge depths of 3.4-4 mm. The size of the overall void initially increased and then decreased with the increase of the plunge depth, while the void was the smallest under the plunge depth of 3.4 mm. The unconnected defect at the lap interface gradually shrank a welding line from obvious crack. Different hook morphologies were observed under different plunge depths. The tensile-shear load of joint increased with the increase of the plunge depth and was up to the largest under the plunge depth of 4 mm. All the tensile-shear specimens fractured along the lap interface. Compared with the void, the unconnected defect had a greater influence on the tensile-shear property.https://journals.pan.pl/Content/118800/PDF/AMM-2021-2-14-Yue%20Wang.pdfrefill friction stir spot weldingaluminum alloydefect characteristicstensile-shear properties
spellingShingle Yue Wang
Peng Chai
Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
Archives of Metallurgy and Materials
refill friction stir spot welding
aluminum alloy
defect characteristics
tensile-shear properties
title Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
title_full Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
title_fullStr Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
title_full_unstemmed Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
title_short Characteristics and Tensile-Shear Properties of Refill FSSW Joint Under Different Plunge Depths in 2060 Aluminum Alloy
title_sort characteristics and tensile shear properties of refill fssw joint under different plunge depths in 2060 aluminum alloy
topic refill friction stir spot welding
aluminum alloy
defect characteristics
tensile-shear properties
url https://journals.pan.pl/Content/118800/PDF/AMM-2021-2-14-Yue%20Wang.pdf
work_keys_str_mv AT yuewang characteristicsandtensileshearpropertiesofrefillfsswjointunderdifferentplungedepthsin2060aluminumalloy
AT pengchai characteristicsandtensileshearpropertiesofrefillfsswjointunderdifferentplungedepthsin2060aluminumalloy