Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer

A pure Ni interlayer with a thickness of 0.1 mm was introduced between high-strength interstitial free steel and Al–Mg–Si alloy, which were friction stir lap welded, producing an excellent welded joint. The interface layer consisted of a γ-Ni solid solution, and the mixed stirring zone contained alt...

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Autores principales:	Gui-Qiao Wang, Yu-Qian Wang, Rui-Hai Duan, Guang-Ming Xie
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	friction stir lap welding Ni interlayer mechanical property Al alloy steel Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/6ff218c8f390401c953f5ee20b55bd13
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spelling	oai:doaj.org-article:6ff218c8f390401c953f5ee20b55bd132021-11-25T18:21:54ZEnhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer10.3390/met111117822075-4701https://doaj.org/article/6ff218c8f390401c953f5ee20b55bd132021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1782https://doaj.org/toc/2075-4701A pure Ni interlayer with a thickness of 0.1 mm was introduced between high-strength interstitial free steel and Al–Mg–Si alloy, which were friction stir lap welded, producing an excellent welded joint. The interface layer consisted of a γ-Ni solid solution, and the mixed stirring zone contained alternate lamellae of γ-Ni and α-Fe solid solutions. The addition of a Ni interlayer strongly suppressed the reaction between Al and Fe because of the atomic arrangement of Ni. Furthermore, the insertion depth of the stirring pin has a significant influence on the Al/steel interfacial reaction. Under shallow insertion depth, the intermetallic compounds of both FeAl and Fe<sub>2</sub>Al<sub>5</sub> were observed at the interface layer. A maximum tensile-shear fracture load of 4.3 kN was achieved, with fractures being present in the steel substrate far away from the Al/steel weld.Gui-Qiao WangYu-Qian WangRui-Hai DuanGuang-Ming XieMDPI AGarticlefriction stir lap weldingNi interlayermechanical propertyAl alloysteelMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1782, p 1782 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	friction stir lap welding Ni interlayer mechanical property Al alloy steel Mining engineering. Metallurgy TN1-997
spellingShingle	friction stir lap welding Ni interlayer mechanical property Al alloy steel Mining engineering. Metallurgy TN1-997 Gui-Qiao Wang Yu-Qian Wang Rui-Hai Duan Guang-Ming Xie Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
description	A pure Ni interlayer with a thickness of 0.1 mm was introduced between high-strength interstitial free steel and Al–Mg–Si alloy, which were friction stir lap welded, producing an excellent welded joint. The interface layer consisted of a γ-Ni solid solution, and the mixed stirring zone contained alternate lamellae of γ-Ni and α-Fe solid solutions. The addition of a Ni interlayer strongly suppressed the reaction between Al and Fe because of the atomic arrangement of Ni. Furthermore, the insertion depth of the stirring pin has a significant influence on the Al/steel interfacial reaction. Under shallow insertion depth, the intermetallic compounds of both FeAl and Fe<sub>2</sub>Al<sub>5</sub> were observed at the interface layer. A maximum tensile-shear fracture load of 4.3 kN was achieved, with fractures being present in the steel substrate far away from the Al/steel weld.
format	article
author	Gui-Qiao Wang Yu-Qian Wang Rui-Hai Duan Guang-Ming Xie
author_facet	Gui-Qiao Wang Yu-Qian Wang Rui-Hai Duan Guang-Ming Xie
author_sort	Gui-Qiao Wang
title	Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
title_short	Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
title_full	Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
title_fullStr	Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
title_full_unstemmed	Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer
title_sort	enhancements in the bonding properties of a friction stir lap-welded interstitial free steel and al alloy by introducing a ni interlayer
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6ff218c8f390401c953f5ee20b55bd13
work_keys_str_mv	AT guiqiaowang enhancementsinthebondingpropertiesofafrictionstirlapweldedinterstitialfreesteelandalalloybyintroducinganiinterlayer AT yuqianwang enhancementsinthebondingpropertiesofafrictionstirlapweldedinterstitialfreesteelandalalloybyintroducinganiinterlayer AT ruihaiduan enhancementsinthebondingpropertiesofafrictionstirlapweldedinterstitialfreesteelandalalloybyintroducinganiinterlayer AT guangmingxie enhancementsinthebondingpropertiesofafrictionstirlapweldedinterstitialfreesteelandalalloybyintroducinganiinterlayer
_version_	1718411264425721856

Enhancements in the Bonding Properties of a Friction Stir Lap-Welded Interstitial Free Steel and Al Alloy by Introducing a Ni Interlayer

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