摘要
根据Mg Li二元合金相图及Al,Zn元素在合金中的作用 ,设计了一种新的 β基变形镁锂合金 (Mg Li Al Zn) ,用光学显微镜和X射线衍射法对合金锻造、轧制和轧制退火态的组织及合金相进行了分析 ,结果表明该合金轧制退火态具有比较理想的组织 .不同状态合金的拉伸性能表明 ,轧制退火态下合金具有最高的强度和屈强比 。
A β base Mg-Li-Al-Zn wrought alloy was designed according to the Mg-Li binary phase diagram and effect of Al, Zn on the alloys. The microstructure and alloy phases changes of the alloy on the states of forging, rolling and rolling-annealing were systematically investigated by optical microscope and X-Ray. The results show that the microstructure of as rolling-annealing is satisfactory. The results from tensile test show that the alloy at the state after rolling and consequent heating at 220°C with holding time of 2 hour has either the highest fracture strength or the highest ratio of the yield strength to fracture strength, while the plasticity is quite acceptable.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2004年第10期976-979,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家 8 63基金资助项目 ( 2 0 0 3AA3 0 5 0 71)
关键词
显微组织
热处理
变形镁锂合金
合金相
Annealing
Deformation
Forging
Heat treatment
Mechanical properties
Metallographic phases
Microstructure
Rolling
Tensile testing
