Mechanism for grain refinement of magnesium alloys by superheating

被引：91
|
作者：
Cao, Peng
Qian, Ma
StJohn, David H.
机构：
[1] Univ Waikato, Dept Engn, Hamilton, New Zealand
[2] Brunel Univ, BCAST, Uxbridge UB8 3PH, Middx, England
[3] Univ Queensland, Sch Engn, CAST Cooperat Res Ctr, St Lucia, Qld 4072, Australia
来源：
SCRIPTA MATERIALIA | 2007年 / 56卷 / 07期
基金：
英国工程与自然科学研究理事会;
关键词：
magnesium alloys; grain refinement; superheating; native nucleants; Al4C3;
D O I：
10.1016/j.scriptamat.2006.12.009
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanisms for grain refinement of magnesium alloys by superheating have remained ambiguous since 1931. A model has been proposed on the basis of the recent understanding of the grain refinement of both high purity and commercial purity Mg-Al alloys. The model explains most of the experimental observations about superheating. Analysis of the grain size data obtained from different Mg-Al alloys as a function of the growth restriction factor with and without superheating provides good support to the model. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：633 / 636
页数：4
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