Investigating the formation of intermetallic compounds during friction stir welding of magnesium alloy to aluminum alloy in air and under liquid nitrogen

被引：85

作者：

Mofid, M. A. ^{[1
]}

Abdollah-zadeh, A. ^{[1
]}

Guer, C. Hakan ^{[2
]}

机构：

[1] Tarbiat Modares Univ, Dept Mat Engn, Tehran 14115143, Iran

[2] Middle E Tech Univ, Met & Mat Engn Dept, TR-06800 Ankara, Turkey

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2014年 / 71卷 / 5-8期

关键词：

Friction stir welding; Aluminum alloy; Magnesium alloy; Intermetallic compound; AL; JOINT; AZ31B;

D O I：

10.1007/s00170-013-5565-x

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This research demonstrates the use of submerged friction stir welding under liquid nitrogen as an alternative and improved method for creating fine-grained welds, and hence, to alleviate formation of intermetallic phases. Magnesium alloy and aluminum alloy were joined by friction stir welding in two environments, namely air and liquid nitrogen, with 400 rpm rotation and 50 mm/min travel speed. The temperature profile, microstructure, scanning electron microscope energy dispersive X-ray spectroscopy analysis and hardness were evaluated. In the stir zone of air-welded specimen, formation of brittle intermetallic compounds causes the weld to crack. These phases were formed because of constitutional liquation. The stir zone of under liquid nitrogen-welded specimen showed that formation of intermetallic compounds is suppressed significantly because of lower heat input.

引用

页码：1493 / 1499

页数：7

共 22 条

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