摘要
通过对AZ80镁合金进行不同温度和时间下的固溶时效处理,然后在室温下进行拉伸试验,获得AZ80镁合金的拉伸性能数据。在光学显微镜下观察不同热处理状态下的第二相分布,并利用Micro-image Analysis&Process软件测定第二相的体积分数。将所得的数据利用MATLAB软件进行模拟拟合。结果表明,当固溶温度为350℃,固溶时间为5 h,时效温度为180℃,时效时间为24 h时,AZ80镁合金的抗拉强度最大,达到344. 4 MPa; AZ80镁合金的第二相体积分数(Ψ)与伸长率(A)的以10为底的对数值之间存在线性关系,并且关系式为lg(A)=-0. 0055×Ψ+1. 29。
The room temperature tensile properties of AZ80 magnesium alloy treated at different temperatures and holding for different time were obtained by tensile tests. The secondary phase distribution was observed under optical microscope and the volume fraction of the second phase was determined by Micro-image Analysis & Process software. The obtained data are simulated and fitted by MATLAB. The results show that the maximum tensile strength of AZ80 magnesium alloy reaches 344. 4 MPa when the solution temperature is 350 ℃,the solution time is 5 h,the aging temperature is 180 ℃ and the aging time is 24 h. There is a linear relationship between the volume fraction of the secondary phase (Ψ)and the lg value of the elongation (A) of AZ80 magnesium alloy,and the relationship is lg (A)=-0. 0055 ×Ψ+ 1. 29.
作者
郭鹏杰
张星
李保成
任耀
Guo Pengjie;Zhang Xing;Li Baoeheng;Ren Yao(School of Materials Science and Engineering,North University of China, Taiyuan Shanxi 030051,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第3期46-49,共4页
Heat Treatment of Metals
关键词
AZ80镁合金
固溶
时效
抗拉强度
伸长率
AZ80 magnesium alloy
solid solution
aging
tensile strength
elongation
