Effect of cooling rate on microstructure of friction-stir welded AA1100 aluminum alloy

被引：22

作者：

Yi, D. ^{[1
]}

Mironov, S. ^{[1
]}

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

Kokawa, H. ^{[1
]}

机构：

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

来源：

PHILOSOPHICAL MAGAZINE | 2016年 / 96卷 / 18期

关键词：

Aluminum; friction-stir welding; electron backscatter diffraction (EBSD); microstructure; texture; MECHANICAL-PROPERTIES; GRAIN-STRUCTURE; EVOLUTION; CU; JOINT;

D O I：

10.1080/14786435.2016.1185186

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the microstructural changes occurring during cooling of friction-stir welded aluminum alloy AA1100 were evaluated. To this end, friction-stir welding (FSW) was performed in a wide range of cooling rates of 20-62 K/s and the evolved microstructures were studied by using electron backscatter diffraction. Below 0.6 T-m (T-m being the melting point), the stir zone material was found to experience no significant changes during cooling. At higher FSW temperatures, however, notable changes occurred in the welded material, including grain growth, sharpening of texture, reduction of the fraction of high-angle boundaries and material softening.

引用

页码：1965 / 1977

页数：13

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