Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process

Hongtao Zhang; Jiakun Liu

doi:10.1016/j.msea.2011.04.039

Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process

Hongtao Zhang^*
, Jiakun Liu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

126 Scopus citations

Abstract

Lap joints of aluminum alloy 2B50 and stainless steel 1Cr18Ni9Ti were welded by MIG welding-brazing method with 4043 Al-Si filler metal. The effect of aluminizing coating and galvanized zinc coating on fusion metal spreadability were studied. The aluminized coating had limited effect to promote weld surface appearance and obvious micro-cracks were found between the compound layer and the steel side. The fracture in tensile tests occurred at the interfacial layer of the weld with a low tensile strength about 60MPa. Joints between aluminum alloy and galvanized steel had good surface appearances and the intermetallic compound in fusion zone region close to joint interface was Al_4.5FeSi. The thickness of the intermetallic compound layer varied from about 5μm to 15μm depending on the heat input and the highest tensile strength of lap joint could reached 193.6MPa when the heat input is 0.846KJ/cm.

Original language	English
Pages (from-to)	6179-6185
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	528
Issue number	19-20
DOIs	https://doi.org/10.1016/j.msea.2011.04.039
State	Published - 25 Jul 2011
Externally published	Yes

Keywords

Aluminum
Mechanical property
Microstructure
Steel
Welding-brazing

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10.1016/j.msea.2011.04.039

Cite this

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title = "Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process",

abstract = "Lap joints of aluminum alloy 2B50 and stainless steel 1Cr18Ni9Ti were welded by MIG welding-brazing method with 4043 Al-Si filler metal. The effect of aluminizing coating and galvanized zinc coating on fusion metal spreadability were studied. The aluminized coating had limited effect to promote weld surface appearance and obvious micro-cracks were found between the compound layer and the steel side. The fracture in tensile tests occurred at the interfacial layer of the weld with a low tensile strength about 60MPa. Joints between aluminum alloy and galvanized steel had good surface appearances and the intermetallic compound in fusion zone region close to joint interface was Al4.5FeSi. The thickness of the intermetallic compound layer varied from about 5μm to 15μm depending on the heat input and the highest tensile strength of lap joint could reached 193.6MPa when the heat input is 0.846KJ/cm.",

keywords = "Aluminum, Mechanical property, Microstructure, Steel, Welding-brazing",

author = "Hongtao Zhang and Jiakun Liu",

year = "2011",

month = jul,

day = "25",

doi = "10.1016/j.msea.2011.04.039",

language = "英语",

volume = "528",

pages = "6179--6185",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

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number = "19-20",

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TY - JOUR

T1 - Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process

AU - Zhang, Hongtao

AU - Liu, Jiakun

PY - 2011/7/25

Y1 - 2011/7/25

N2 - Lap joints of aluminum alloy 2B50 and stainless steel 1Cr18Ni9Ti were welded by MIG welding-brazing method with 4043 Al-Si filler metal. The effect of aluminizing coating and galvanized zinc coating on fusion metal spreadability were studied. The aluminized coating had limited effect to promote weld surface appearance and obvious micro-cracks were found between the compound layer and the steel side. The fracture in tensile tests occurred at the interfacial layer of the weld with a low tensile strength about 60MPa. Joints between aluminum alloy and galvanized steel had good surface appearances and the intermetallic compound in fusion zone region close to joint interface was Al4.5FeSi. The thickness of the intermetallic compound layer varied from about 5μm to 15μm depending on the heat input and the highest tensile strength of lap joint could reached 193.6MPa when the heat input is 0.846KJ/cm.

AB - Lap joints of aluminum alloy 2B50 and stainless steel 1Cr18Ni9Ti were welded by MIG welding-brazing method with 4043 Al-Si filler metal. The effect of aluminizing coating and galvanized zinc coating on fusion metal spreadability were studied. The aluminized coating had limited effect to promote weld surface appearance and obvious micro-cracks were found between the compound layer and the steel side. The fracture in tensile tests occurred at the interfacial layer of the weld with a low tensile strength about 60MPa. Joints between aluminum alloy and galvanized steel had good surface appearances and the intermetallic compound in fusion zone region close to joint interface was Al4.5FeSi. The thickness of the intermetallic compound layer varied from about 5μm to 15μm depending on the heat input and the highest tensile strength of lap joint could reached 193.6MPa when the heat input is 0.846KJ/cm.

KW - Aluminum

KW - Mechanical property

KW - Microstructure

KW - Steel

KW - Welding-brazing

UR - https://www.scopus.com/pages/publications/79957934145

U2 - 10.1016/j.msea.2011.04.039

DO - 10.1016/j.msea.2011.04.039

M3 - 文章

AN - SCOPUS:79957934145

SN - 0921-5093

VL - 528

SP - 6179

EP - 6185

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 19-20

ER -

Microstructure characteristics and mechanical property of aluminum alloy/stainless steel lap joints fabricated by MIG welding-brazing process

Abstract

Keywords

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