Strengthening mechanisms of Mg-Si alloys

被引：388

作者：

Mabuchi, M ^{[1
]}

Higashi, K ^{[1
]}

机构：

[1] UNIV OSAKA PREFECTURE, COLL ENGN, DEPT MECH SYST ENGN, SAKAI, OSAKA 593, JAPAN

来源：

ACTA MATERIALIA | 1996年 / 44卷 / 11期

关键词：

D O I：

10.1016/1359-6454(96)00072-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The origins of high room temperature strength of rapidly solidified (R/S) Mg-high Si alloys have been analysed using various strengthening mechanism models. The analysis revealed that the high strength was attributed to the fine-grain strengthening mechanism as well as the strengthening mechanisms due to Mg2Si particles. A large contribution of the fine-grain strengthening mechanism results from the strong dependence of strength on grain size for h.c.p. metals. However, the strength of the R/S alloys containing small particles (less than or equal to 1 mu m) rapidly decreased at 473 K. This is explained by the critical particle size concept. Copyright (C) 1996 Acta Metallurgica Inc.

引用

页码：4611 / 4618

页数：8

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