Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system

Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system

Immiscible dissimilar metals can be successfully bonded by adding alloying elements to promote interfacial reaction. Although there are many kinds of interfacial microstructure, studies on the interfacial microstructure evolution are deficient under different bonding methods. In this work, AZ31 Mg a...

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Main Authors: Taotao Li, Gang Song, Peini Yu, Liming Liu
Format: Article
Language:English
Published: Elsevier 2019-11-01
Series:Materials & Design
Online Access:http://www.sciencedirect.com/science/article/pii/S0264127519303417
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spelling doaj-30b87f00178848a8bd6ea0a721de0b0f2020-11-25T01:18:35ZengElsevierMaterials & Design0264-12752019-11-01181Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe systemTaotao Li0Gang Song1Peini Yu2Liming Liu3School of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian 116024, ChinaCorresponding author.; School of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian 116024, ChinaSchool of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian 116024, ChinaImmiscible dissimilar metals can be successfully bonded by adding alloying elements to promote interfacial reaction. Although there are many kinds of interfacial microstructure, studies on the interfacial microstructure evolution are deficient under different bonding methods. In this work, AZ31 Mg alloy and Q235 steel were bonded by laser-tungsten inert gas (TIG) butt fusion welding with Ni interlayer. The microstructure and tensile properties were evaluated to understand the effect of laser offset on the interfacial microstructure and mechanical features of Mg/steel joints. The interfacial microstructure has undergone the evolution of eutectic, eutectic-free and eutectic with the increase of laser offset to steel side during double-side welding, which include the characteristics of fusion welding, brazing-welding and solid-state welding. The interfacial microstructure evolution design principle is discussed, some references can provide for the design method and procedure. Keywords: Interfacial microstructure, Evolution, Mg alloy, Steel, Interface layer, Eutectic structurehttp://www.sciencedirect.com/science/article/pii/S0264127519303417
collection DOAJ
language English
format Article
sources DOAJ
author Taotao Li
Gang Song
Peini Yu
Liming Liu
spellingShingle Taotao Li
Gang Song
Peini Yu
Liming Liu
Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
Materials & Design
author_facet Taotao Li
Gang Song
Peini Yu
Liming Liu
author_sort Taotao Li
title Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
title_short Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
title_full Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
title_fullStr Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
title_full_unstemmed Interfacial microstructure evolution in fusion welding of immiscible Mg/Fe system
title_sort interfacial microstructure evolution in fusion welding of immiscible mg/fe system
publisher Elsevier
series Materials & Design
issn 0264-1275
publishDate 2019-11-01
description Immiscible dissimilar metals can be successfully bonded by adding alloying elements to promote interfacial reaction. Although there are many kinds of interfacial microstructure, studies on the interfacial microstructure evolution are deficient under different bonding methods. In this work, AZ31 Mg alloy and Q235 steel were bonded by laser-tungsten inert gas (TIG) butt fusion welding with Ni interlayer. The microstructure and tensile properties were evaluated to understand the effect of laser offset on the interfacial microstructure and mechanical features of Mg/steel joints. The interfacial microstructure has undergone the evolution of eutectic, eutectic-free and eutectic with the increase of laser offset to steel side during double-side welding, which include the characteristics of fusion welding, brazing-welding and solid-state welding. The interfacial microstructure evolution design principle is discussed, some references can provide for the design method and procedure. Keywords: Interfacial microstructure, Evolution, Mg alloy, Steel, Interface layer, Eutectic structure
url http://www.sciencedirect.com/science/article/pii/S0264127519303417
work_keys_str_mv AT taotaoli interfacialmicrostructureevolutioninfusionweldingofimmisciblemgfesystem
AT gangsong interfacialmicrostructureevolutioninfusionweldingofimmisciblemgfesystem
AT peiniyu interfacialmicrostructureevolutioninfusionweldingofimmisciblemgfesystem
AT limingliu interfacialmicrostructureevolutioninfusionweldingofimmisciblemgfesystem
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