Friction Stir Lap Welding of Magnesium Alloy to Steel: A Preliminary Investigation

被引：100

作者：

Jana, S. ^{[1
]}

Hovanski, Y. ^{[1
]}

Grant, G. J. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2010年 / 41A卷 / 12期

基金：

美国能源部;

关键词：

Steel Sheet; Friction Stir Welding; Friction Stir Welding; Joint Strength; Steel Weld;

D O I：

10.1007/s11661-010-0399-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An initial study was made to evaluate the feasibility of joining magnesium alloy AZ31 sheet to galvanized steel sheet in a lap configuration using friction stir welding (FSW). Two different automotive sheet steels were used for comparative evaluation of the dissimilar joining potential: a 0.8 mm thick, electrogalvanized (EG) mild steel, and a 1.5 mm thick hot-dipped galvanized (HDG) high-strength, low-alloy (HSLA) steel. These steels were joined to 2.33 mm thick AZ31B magnesium sheet. A single FSW tool design was used for both dissimilar welds, and the process parameters were kept the same. The average peak load for the AZ31-1.5 mm steel weld joint in lap shear mode was found to be 6.3 +/- A 1.0 kN. For the AZ31-0.8 mm steel weld, joint strength was 5.1 +/- A 1.5 kN. Microstructural investigation indicates melting of the Zn coating present on the steel sheets, and subsequent alloying with the Mg sheet resulted in the formation of a solidified Zn-Mg alloy layer.

引用

页码：3173 / 3182

页数：10

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