The formation mechanism of intermetallic compounds in Al/Mg friction-stir weld joint

被引：20

作者：

Chen, Bing ^{[1
]}

Wang, Yuhui ^{[2
]}

Xiao, Changyuan ^{[1
,3
]}

Zhang, Minmin ^{[1
]}

Ni, Guoli ^{[1
]}

Li, Da ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Coll Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China

[2] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao, Peoples R China

[3] Capital Aerosp Machinery Co, China Acad Launch Vehicle Technol, Beijing, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2018年 / 34卷 / 06期

关键词：

Friction stir welding; intermetallic compounds; plastic deformation; local composition; AZ31B MAGNESIUM ALLOY; 6061; ALUMINUM-ALLOY; MG ALLOY; AL-ALLOY; PHYSICAL SIMULATION; DISSIMILAR AL; MICROSTRUCTURE; STEEL; CONFIGURATION; PARAMETERS;

D O I：

10.1080/02670836.2017.1410926

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanical properties of dissimilar metal joints are strongly related to the brittle intermetallic compounds (IMCs) that form at the weld interfaces. In this study, the effects of temperature, local composition and plastic strain on the formation mechanism of IMCs in a welded joint between 6061 Al and AZ31 Mg were investigated. The results demonstrate that Al3Mg2 is formed when the strain rate reaches 10 s(-1), even though the temperature is lower than the Al-Mg eutectic temperature, which suggests that plastic deformation may accelerate the formation of IMCs in the deformation zone. Meanwhile, the formation of Al-Mg IMCs can be suppressed by Mg-Zn and Al-Mg-Zn compounds when Zn filler is added at the Al/Mg interfaces.

引用

页码：703 / 711

页数：9

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