Characterization and preparation of Mg-Al-Zn alloys with minor Sc

被引：23

作者：

Xiao, D. H. ^{[1
]}

Song, M. ^{[1
]}

Zhang, F. Q. ^{[1
]}

He, Y. H. ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 484卷 / 1-2期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

Magnesium alloys; Scandium; Microstructure; Mechanical properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; ADDITIONS; SCANDIUM; RE; ZR;

D O I：

10.1016/j.jallcom.2009.04.113

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mg-9Al-1Zn alloys with 0.3% Sc content (mass fraction) were prepared by ingot metallurgy. The effects of scandium addition on the microstructure and mechanical properties of the alloys have been investigated using optical microscope, scanning electron microscopy and tensile testing. It has been shown that the microstructure is mainly composed of alpha-Mg matrix, beta-Mg17Al12 phase and Mg5Al4Sc intermetallic compound when 0.3% Sc was added. The scandium addition improves the morphology and distribution Of Mg17Al12 phase, which substantially improves the mechanical properties of the alloy at both room temperature and high temperature. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：416 / 421

页数：6

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