Influence of Sr Addition on Microstructure and Mechanical Properties of Ignition-proof AZ91D-0.3Be Magnesium Alloy

被引：0
|
作者：
Han, Fuyin [1 ]
Tian, Linhai [2 ]
Wang, Hongxia [1 ]
Liang, Wei [1 ]
Wang, Wenxian [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Res Inst Surface Engn, Shanxi 030024, Peoples R China
来源：
ADVANCED MATERIALS AND STRUCTURES, PTS 1 AND 2 | 2011年 / 335-336卷
基金：
中国国家自然科学基金; 山西省青年科学基金;
关键词：
Sr; Ignition-proof magnesium alloy; Microstructure; Mechanical properties;
D O I：
10.4028/www.scientific.net/AMR.335-336.783
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sr added ignition-proof AZ91D-0.3Be magnesium alloy was prepared. The influence of Sr content on microstructure and mechanical properties of the alloy was studied. Results show that the microstructure of ignition-proof AZ91D-0.3Be magnesium alloy is refined by a small amount of Sr addition. It is due to that the enrichment of a few Sr atoms in solid liquid interface in the process of magnesium alloy solidification inhibits grain growth and accelerates more nucleation. However, with increasing of Sr addition the microstructure is coarsened. By 0.01% Sr addition the tensile strength of as-cast experimental alloy is increased by about 25% and that of both the solid-solution and aged alloy is increased by about 40%. The elongation of as-cast alloy is increased by about 20% and that of solid-solution alloy increased by about 30%.
引用
收藏
页码：783 / +
页数：2
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