摘要
研究了微量Mn、Zr对Mg13%Gd和Mg9%Gd4%Y合金铸态和挤压后的微观组织及力学性能的影响。结果表明:在铸态,含Zr合金的晶粒明显小于不含Zr的合金,而Mn对合金的铸态显微组织影响不大;将Mg9%Gd4%Y0.6%Mn和Mg9%Gd4%Y0.6%Zr合金挤压后,都可以得到非常细小均匀的等轴晶,晶粒尺寸约14μm;这两个合金在挤压时效态(T5)的力学性能都明显优于WE54合金的,且Mg9%Gd4%Y0.6%Zr合金比Mg9%Gd4%Y0.6%Mn合金性能更好。
The effect of small amount of Mn and Zr on the microstructure and mechanical properties of Mg-13%Gd and Mg-9%Gd-4%Y alloys was studied. The results show that the grains of the Zr-containing alloys are much finer than those of the Zr free alloys in as-cast, and Mn has little effect on the as-cast microstructure. After Mg-9%Gd-4%Y-0.6%Mn alloy and Mg-9%Gd-4%Y-0.6%Zr alloy are extruded, the very fine particle about 14μm and uniform grains are obtained. The mechanical properties of the two alloys at the extruded-T5 state are all better than those of the WE54 alloy, and the properties of the Mg-9%Gd-4%Y-0.6%Zr alloy are superior to those of the Mg-9%Gd-4%Y-0.6%Mn alloy.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2005年第6期917-922,共6页
The Chinese Journal of Nonferrous Metals
基金
国防预研基金资助项目(51412020304QT7106)
国家高技术研究发展计划资助项目(03AA741043)
湖南省自然科学基金资助项目(03JJY4051)