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Microstructure and properties of friction stir butt-welded AZ31 magnesium alloy

✍ Scribed by Wang Xunhong; Wang Kuaishe

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
721 KB
Volume
431
Category
Article
ISSN
0921-5093

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✦ Synopsis

Friction stir welding (FSW) is a relatively new joining technique particularly for magnesium and aluminum alloys that are difficult to fusion weld. In this paper, an excellent friction stir weld of AZ31 magnesium alloy was obtained at proper parameter. In the friction stir zone (FSZ), the microstructure of the base material (BM) is replaced by fine grains and small particles of intermetallic compounds. The average microhardness of the friction stir zone is higher than that of the base material. The maximum tensile strength of joint can reach 93% that of the base material. And the failure locations are almost at the heating affected zone.

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