摘要
分别采用离心铸造和金属型重力铸造制备了AZ81镁合金试样,并对两种试样的晶粒结构、第二相分布与拉伸性能、硬度等进行了比较。试验结果表明,与金属型重力铸造相比,离心铸造试件的晶粒明显细化,抗拉强度、屈服强度、伸长率有明显提高,显微硬度有所提高。
AZ81 magnesium alloy samples were prepared by centrifugal casting and metal mold gravity casting,respectively. The grain microstructure, second phase distribution, tensile properties and hardness of the two samples were compared. The experimental results show that compared with those of the sample by metal mold gravity casting, the grain size of centrifugal casting specimen is obviously refined, the tensile strength, yield strength and elongation of centrifugal casting specimen are obviously improved. The micro-hardness is improved.
作者
铁争鸣
李广德
TIE Zhengming;LI Guangde(Qinghai Communications Technical College,Xining 810003,China)
出处
《热加工工艺》
北大核心
2020年第5期87-89,共3页
Hot Working Technology
关键词
离心铸造
AZ81镁合金
显微组织
力学性能
centrifugal casting
AZ81 magnesium alloy
microstructure
mechanical properties
