摘要
Mg合金具有低密度、高比强度、高阻尼和良好的铸造性能等优点,然而,耐热性差且在酸性腐蚀介质中腐蚀速率快限制了Mg合金的广泛应用。合金化是改善Mg合金性能的有效途径,而多元相图是优化Mg合金成分设计的基础。总结了Mg合金相图的实验测定方法,阐明了Mg合金体系相图的研究现状,提出了未来Mg合金相图研究方向及其对开发新型Mg合金的重要性;并以Mg-Al-Sr体系为例说明如何借助相图来预测和理解合金的微观组织。
Magnesium alloys have been widely applied due to a number of desirable properties, such as low den sities, high specific strengths, high damping characteristics and excellent casting performance, but the limited heat resistance and rather fast corrosion rate in acid environment have retarded their applications. Alloying is an effective tool to improve their properties. Phase diagrams are the foundation of compositional design of novel magnesium alloys. The experimental methodologies to determine magnesium alloys phase diagrams are summarized. The research pro- gress of phase diagrams of magnesium alloys is reviewed. How to utilize phase diagram as the basis to predict and un- derstand the microstructures in the Mg-Al-Sr ternary system is also discussed.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2015年第11期92-95,共4页
Materials Reports
基金
国家自然科学青年基金(51401032)
中央高校基金(0009-2014G1311089)
关键词
MG合金
合金化
相图
相图计算
magnesium alloys, alloying, phase diagrams, calphad
作者简介
孙志平：女，1983年生，博士，讲师，研究方向为合金相图计算、合金设计 Tel：029-82337340 E-mail：sunzhiping@chd．edu．cn
