Achieving ultrafine grain size in Mg-Al-Zn alloy by friction stir processing

被引：246
|
作者：
Chang, C. I.
Du, X. H.
Huang, J. C. [1 ]
机构：
[1] Natl Sun Yat Sen Univ, Ctr Nanosci & Technol, Inst Mat Sci & Engn, Kaohsiung 804, Taiwan
[2] Shenyang Inst Aeronaut Engn, Dept Mat Engn, Shenyang 110034, Peoples R China
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 03期
关键词：
friction stir processing; magnesium alloy; ultrafine-grained microstructure; grain refinement;
D O I：
10.1016/j.scriptamat.2007.04.007
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrafine-grained (UFG) microstructures with an average grain size of 100-300 nin are achieved in solution-hardened AZ31 Mg-Al-Zn alloy prepared by friction stir processing equipped with a rapid heat sink. The mean hardness of the UFG region reaches similar to 120H(v), which is more than twice as high as that of the AZ31 matrix. The grain refinement kinetics are analyzed and the results are self-consistent. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：209 / 212
页数：4
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