Microstructural characterization of dissimilar friction stir welds between AA2219 and AA5083

被引：38

作者：

Dilip, J. J. S. ^{[1
]}

Koilraj, M. ^{[2
]}

Sundareswaran, V. ^{[2
]}

Ram, G. D. Janaki ^{[1
]}

Rao, S. R. Koteswara ^{[3
]}

机构：

[1] Indian Inst Technol Madras, Mat Joining Lab, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India

[2] Anna Univ, Dept Mech Engn, Madras 600025, Tamil Nadu, India

[3] Tagore Engn Coll, Rathinamangalam 600048, Cheenai, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2010年 / 63卷 / 04期

关键词：

friction stir welding; dissimilar welding; aluminum alloys; ALLOYS; AL;

D O I：

10.1007/s12666-010-0116-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Fusion welding of dissimilar aluminum alloys is very challenging. In the present work, Al-Cu alloy AA2219-T87 was friction stir welded to Al-Mg alloy AA5083-H321. Weld microstructures, hardness, and tensile properties were evaluated in as-welded condition. Microstructural studies revealed that the nugget region was primarily composed of alloy 2219, which was placed on the advancing side. No significant mixing of the two base materials in the nugget region was observed. Hardness studies revealed that the lowest hardness in the weldment occurred in the heat-affected zone on alloy 5083 side, where tensile failure were observed to take place. Tensile tests indicated a joint efficiency of around 90%, which is substantially higher than what can be achieved with conventional fusion welding. Overall, the results show that satisfactory butt welds can be produced between AA2219-T87 and Al-Mg alloy AA5083-H321 sheets using friction stir welding.

引用

页码：757 / 764

页数：8

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