Effect of interfacial microstructure on lap shear strength of friction stir spot weld of aluminium alloy to magnesium alloy

被引：79

作者：

Sato, Y. S. ^{[1
]}

Shiota, A. ^{[1
]}

Kokawa, H. ^{[1
]}

Okamoto, K. ^{[2
]}

Yang, Q. ^{[3
]}

Kim, C. ^{[4
]}

机构：

[1] Tohoku Univ, Dept Mat Proc, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Hitachi Ltd, Mat Res Lab, Hitachi, Ibaraki 3191292, Japan

[3] Hitachi Amer Ltd, Automot Prod Res Lab, Div Res & Dev, Farmington Hills, MI 48335 USA

[4] Gen Motors R&D Ctr, Mfg Proc Lab, Warren, MI 48090 USA

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2010年 / 15卷 / 04期

关键词：

Friction stir spot welding; Al alloy; Mg alloy; Lap shear strength; Microstructure; Interfacial layer; MG ALLOY; AL-ALLOY; CRACKING; STEEL; SHEET; FLOW; FSW;

D O I：

10.1179/136217109X12568132624208

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, an attempt was made to join two dissimilar light metal alloys which are becoming increasingly familiar in the automotive industry, i.e. AA5083 aluminium alloy and AZ31 magnesium alloy, by the friction stir spot welding process. Lap welds were produced with various welding parameters, and interfacial microstructures and lap shear strengths of these welds were examined. Friction stir spot welding produced defect-free welds, even though a thick interfacial layer composed mainly of intermetallic compounds was present. The thickness of the interfacial layer did not appear to affect the lap shear strength of the weld, whereas the distribution of intermetallic compounds in the interfacial layer did so. Microstructural factors of the interface governing the lap shear strength of the weld were examined.

引用

页码：319 / 324

页数：6

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