Effect of friction stir processing with SiC particles on microstructure and hardness of AZ31

被引：233

作者：

Morisada, Y. ^{[1
]}

Fujii, H.

Nagaoka, T.

Fukusumi, M.

机构：

[1] Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368553, Japan

[2] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 433卷 / 1-2期

基金：

日本学术振兴会;

关键词：

friction stir processing; AZ31; SiC particle; grain refinement; pinning effect; microhardness;

D O I：

10.1016/j.msea.2006.06.089

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SiC particles were uniformly dispersed into an AZ31 matrix by friction stir processing (FSP). The SiC particles promoted the grain refinement of the AZ31 matrix by FSP. The mean grain size of the stir zone with the SiC particles was obviously smaller than that of the stir zone without the SiC particles. The microhardness of the stir zone with the SiC particles was reached about 80 Hv due to the grain refinement and the distribution of the SiC particles. Additionally, the SiC particle/AZ31 region showed fine grains even at elevated temperatures (similar to 400 degrees C) resulting in the pinning effect by the SiC particles. In contrast, the microhardness was significantly decreased attributed to the abnormal grain growth of the FSPed AZ31 without the SiC particles. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：50 / 54

页数：5

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