Effect of Sr on microstructure and aging behavior of Mg-14Li alloys

被引：18

作者：

Jiang, Bin ^{[1
,2
,3
]}

Zeng, Ying ^{[2
]}

Yin, Hengmei ^{[1
,2
]}

Li, Ruihong ^{[1
,2
]}

Pan, Fusheng ^{[1
,2
]}

机构：

[1] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400030, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China

[3] Chongqing Acad Sci & Technol, New Mat Ctr, Chongqing 401123, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2012年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Magnesium-lithium alloys; Microstructure; Grain refinement; Aging behavior; GRAIN-REFINEMENT; MECHANICAL-PROPERTIES; PRECIPITATION PHENOMENA; ALUMINUM-ALLOYS; BETA-PHASE; STRONTIUM;

D O I：

10.1016/j.pnsc.2012.03.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The as-cast and as-extruded Mg-14 wt%Li-xSr (x=0.14, 0.19, 0.39 wt%) alloys were, respectively, prepared through a simple alloying process and hot extrusion. The effects of Sr addition on microstructure and aging behavior of the Mg-14 wt%Li-xSr alloys were studied. The results indicated that beta(Li) and Mg2Sr were the two primary phases in the microstructures of both as-cast and as-extruded Mg 14 wt%Li xSr alloys. Interestingly, with the increase of Sr content from 0.14 wt% to 0.39 wt%, the grain sizes of the as-cast and as-extruded Mg-14 wt%Li xSr alloys markedly decreased from 5000 mu m and 38 mu m to 330 mu m and 22 mu m respectively, while no obvious changes of the micro-hardness and microstructure of the as-extruded alloys were observed during the aging treatment. (C) 2012. Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.

引用

页码：160 / 168

页数：9