Interface characterization and materials flow pattern analysis for friction stir welding overlap joints of Mg/Al dissimilar alloys

被引：1

作者：

Jin, Yuhua ^{[1
]}

Huang, Zhenyou ^{[1
]}

Li, Changfeng ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

来源：

ADVANCED DEVELOPMENT IN AUTOMATION, MATERIALS AND MANUFACTURING | 2014年 / 624卷

关键词：

Friction stir overlap welding; Mg/Al alloy; Interface characterization; Materials flow pattern; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.4028/www.scientific.net/AMM.624.106

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the interface characterization and materials flow pattern of overlap joints of dissimilar alloys of 6061-T6 aluminum alloy and AZ31B magnesium alloy welded by friction stir overlap welding with a reverse conical pin tool were investigated. The results shown that: when AZ31B magnesium alloy sheet was placed over 6061-T6 aluminum alloy sheet, and AZ31B magnesium alloy sheet was settled at advancing side while 6061-T6 aluminum alloy sheet was at retreating side, it could eliminate the influence of migration interface on the strength of the lap joints. What is more, the intermetallic compound Mg17A112 were formed at advancing side of magnesium alloy sheet and retreating side of initial interface between magnesium alloy sheet and aluminum alloy sheet. According to the distribution of intermetallic compound and the characteristics of migration interface, the plastic flowing pattern of metal in welding process was also evaluated.

引用

页码：106 / 113

页数：8

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