Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding

In order to study the microstructure and mechanical properties of 5A06 aluminum alloy with variable gas TIG welding, (Ar-Ar) variable gas TIG welding and traditional continuous gas TIG welding were used to carry out surface surfacing welding on 4mm thick 5A06 aluminum alloy plate. We observe the met...

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Main Authors: QI Xin, DAI Hongbin
Format: Article
Language:zho
Published: Harbin University of Science and Technology Publications 2021-12-01
Series:Journal of Harbin University of Science and Technology
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Online Access:https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2043
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author QI Xin
DAI Hongbin
author_facet QI Xin
DAI Hongbin
author_sort QI Xin
collection DOAJ
description In order to study the microstructure and mechanical properties of 5A06 aluminum alloy with variable gas TIG welding, (Ar-Ar) variable gas TIG welding and traditional continuous gas TIG welding were used to carry out surface surfacing welding on 4mm thick 5A06 aluminum alloy plate. We observe the metallographic structure of the weld on the surface of the weld under air and variable air, and test the tensile strength of the 5A06 aluminum alloy butt-welded plate sample under 1Hz variable air.The results show that: the variable aeration has a stirring and impacting effect on the molten pool, and the penetration depth is significantly greater than that under the traditional aeration.Compared with the weld structure under the traditional aeration, the weld structure under the variable aeration has more precipitation phase, and the distribution of the strengthening phase is evenly dispersed, which increases the strength of the weld, thereby improving the quality of the weld. Compared with the base material, the plasticity of the 5A06 aluminum alloy butt-welded plate sample under variable aeration decreases, which is 95% of the base material′s tensile strength.The fracture location is at the weld, and the fracture form is ductile fracture.
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spelling doaj-art-9dcd06bab10e4ea294ea01f7adaed3ef2025-08-20T03:34:36ZzhoHarbin University of Science and Technology PublicationsJournal of Harbin University of Science and Technology1007-26832021-12-01260611812310.15938/j.jhust.2021.06.016Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG WeldingQI Xin0DAI Hongbin1School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040,ChinaSchool of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150040,ChinaIn order to study the microstructure and mechanical properties of 5A06 aluminum alloy with variable gas TIG welding, (Ar-Ar) variable gas TIG welding and traditional continuous gas TIG welding were used to carry out surface surfacing welding on 4mm thick 5A06 aluminum alloy plate. We observe the metallographic structure of the weld on the surface of the weld under air and variable air, and test the tensile strength of the 5A06 aluminum alloy butt-welded plate sample under 1Hz variable air.The results show that: the variable aeration has a stirring and impacting effect on the molten pool, and the penetration depth is significantly greater than that under the traditional aeration.Compared with the weld structure under the traditional aeration, the weld structure under the variable aeration has more precipitation phase, and the distribution of the strengthening phase is evenly dispersed, which increases the strength of the weld, thereby improving the quality of the weld. Compared with the base material, the plasticity of the 5A06 aluminum alloy butt-welded plate sample under variable aeration decreases, which is 95% of the base material′s tensile strength.The fracture location is at the weld, and the fracture form is ductile fracture.https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=20435a06 aluminum alloytig weldingvariable air supplymicrostructuremechanical properties
spellingShingle QI Xin
DAI Hongbin
Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
Journal of Harbin University of Science and Technology
5a06 aluminum alloy
tig welding
variable air supply
microstructure
mechanical properties
title Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
title_full Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
title_fullStr Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
title_full_unstemmed Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
title_short Microstructure and Mechanical Properties of 5A06 Aluminum Alloy with Variable Gas TIG Welding
title_sort microstructure and mechanical properties of 5a06 aluminum alloy with variable gas tig welding
topic 5a06 aluminum alloy
tig welding
variable air supply
microstructure
mechanical properties
url https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2043
work_keys_str_mv AT qixin microstructureandmechanicalpropertiesof5a06aluminumalloywithvariablegastigwelding
AT daihongbin microstructureandmechanicalpropertiesof5a06aluminumalloywithvariablegastigwelding