Development of a Mg-Al filler metal for brazing magnesium alloy AZ31B

Zheng Wang; Wenqing Qu; Hongshou Zhuang

doi:10.1016/j.matlet.2016.06.085

Development of a Mg-Al filler metal for brazing magnesium alloy AZ31B

Zheng Wang^*
, Wenqing Qu
, Hongshou Zhuang

^*Corresponding author for this work

Beihang University

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

20 Scopus citations

Abstract

A Mg-Al filler metal was used to braze magnesium alloy AZ31B through furnace brazing under the protection of a flux. There are two microstructures in the filler metal: solid solution ɑ-Mg and eutectic structure ɑ-Mg+γ-Mg₁₇Al₁₂. The microstructure and mechanical properties of the brazed joint were investigated. According to the experimental results, partial base metal was dissolved into the brazing seam during the brazing process, where ɑ-Mg solid solution and γ-Mg₁₇(Al, Zn)₁₂ compound were formed. The average shear strength of the brazed joints is 75 MPa. The fracture morphology of the brazed joint exhibits a intergranular brittle feature. Discontinuous γ-Mg₁₇(Al, Zn)₁₂ phase distributed around the ɑ-Mg grains is a main crack source.

Original language	English
Pages (from-to)	75-77
Number of pages	3
Journal	Materials Letters
Volume	182
DOIs	https://doi.org/10.1016/j.matlet.2016.06.085
State	Published - 1 Nov 2016

Keywords

Furnace brazing
Mechanical properties
Metals and alloys
Microstructure

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10.1016/j.matlet.2016.06.085

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title = "Development of a Mg-Al filler metal for brazing magnesium alloy AZ31B",

abstract = "A Mg-Al filler metal was used to braze magnesium alloy AZ31B through furnace brazing under the protection of a flux. There are two microstructures in the filler metal: solid solution ɑ-Mg and eutectic structure ɑ-Mg+γ-Mg17Al12. The microstructure and mechanical properties of the brazed joint were investigated. According to the experimental results, partial base metal was dissolved into the brazing seam during the brazing process, where ɑ-Mg solid solution and γ-Mg17(Al, Zn)12 compound were formed. The average shear strength of the brazed joints is 75 MPa. The fracture morphology of the brazed joint exhibits a intergranular brittle feature. Discontinuous γ-Mg17(Al, Zn)12 phase distributed around the ɑ-Mg grains is a main crack source.",

keywords = "Furnace brazing, Mechanical properties, Metals and alloys, Microstructure",

author = "Zheng Wang and Wenqing Qu and Hongshou Zhuang",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = nov,

day = "1",

doi = "10.1016/j.matlet.2016.06.085",

language = "英语",

volume = "182",

pages = "75--77",

journal = "Materials Letters",

issn = "0167-577X",

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TY - JOUR

T1 - Development of a Mg-Al filler metal for brazing magnesium alloy AZ31B

AU - Wang, Zheng

AU - Qu, Wenqing

AU - Zhuang, Hongshou

PY - 2016/11/1

Y1 - 2016/11/1

N2 - A Mg-Al filler metal was used to braze magnesium alloy AZ31B through furnace brazing under the protection of a flux. There are two microstructures in the filler metal: solid solution ɑ-Mg and eutectic structure ɑ-Mg+γ-Mg17Al12. The microstructure and mechanical properties of the brazed joint were investigated. According to the experimental results, partial base metal was dissolved into the brazing seam during the brazing process, where ɑ-Mg solid solution and γ-Mg17(Al, Zn)12 compound were formed. The average shear strength of the brazed joints is 75 MPa. The fracture morphology of the brazed joint exhibits a intergranular brittle feature. Discontinuous γ-Mg17(Al, Zn)12 phase distributed around the ɑ-Mg grains is a main crack source.

AB - A Mg-Al filler metal was used to braze magnesium alloy AZ31B through furnace brazing under the protection of a flux. There are two microstructures in the filler metal: solid solution ɑ-Mg and eutectic structure ɑ-Mg+γ-Mg17Al12. The microstructure and mechanical properties of the brazed joint were investigated. According to the experimental results, partial base metal was dissolved into the brazing seam during the brazing process, where ɑ-Mg solid solution and γ-Mg17(Al, Zn)12 compound were formed. The average shear strength of the brazed joints is 75 MPa. The fracture morphology of the brazed joint exhibits a intergranular brittle feature. Discontinuous γ-Mg17(Al, Zn)12 phase distributed around the ɑ-Mg grains is a main crack source.

KW - Furnace brazing

KW - Mechanical properties

KW - Metals and alloys

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84976878409

U2 - 10.1016/j.matlet.2016.06.085

DO - 10.1016/j.matlet.2016.06.085

M3 - 文章

AN - SCOPUS:84976878409

SN - 0167-577X

VL - 182

SP - 75

EP - 77

JO - Materials Letters

JF - Materials Letters

ER -

Development of a Mg-Al filler metal for brazing magnesium alloy AZ31B

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Keywords

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