摘要
采用光学显微镜(OM)、扫描电镜(SEM)、电化学实验和拉伸实验等研究固溶处理对Mg-1.5Er-1.0Zn-0.3Zr合金组织、耐蚀性能和力学性能的影响。结果表明:铸态合金的显微组织主要由α-Mg基体、Mg_(3)Er_(2)Zn_(3)、Mg_(24)Er_(5)和MgErZn_(2)相组成。经固溶处理后,第二相逐渐溶解在镁基体中,且合金平均晶粒尺寸有不同程度的增大。合金经460℃固溶处理8 h后的综合性能较好,其腐蚀速率为(0.44±0.051)mm/y,抗拉强度、屈服强度和伸长率分别为(227.97±4.84)MPa、(137.96±5.03)MPa和(14.42±1.06)%。
Effect of solution treatment on microstructure,corrosion resistance and mechanical properties of Mg-1.5Er-1.0Zn-0.3Zr alloy was investigated by means of optical microscope(OM),scanning electron microscopy(SEM),electrochemical experiments and tensile experiments.The results show that the microstructure of the as-cast alloy is mainly composed ofα-Mg matrix,Mg_(3)Er_(2)Zn_(3)、Mg_(24)Er_(5) and MgErZn_(2) phases.After solution treatment,the second phases gradually dissolve in the magnesium matrix,and the average grain size of the alloy increases to varying degrees.The comprehensive performance of the alloy after solution treatment at 460℃for 8 h is good,with a corrosion rate of(0.44±0.051)mm/y,the tensile strength,yield strength and elongation are(227.97±4.84)MPa,(137.96±5.03)MPa and(14.42±1.06)%,respectively.
作者
贺俊光
冯武云
文九巴
龚圆
郑向阳
HE Jun-guang;FENG Wu-yun;WEN Jiu-ba;GONG Yuan;ZHENG Xiang-yang(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471003,China;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal new Materials and Advanced Processing Technology,Luoyang 471023,China)
出处
《材料热处理学报》
CAS
CSCD
北大核心
2024年第9期124-133,共10页
Transactions of Materials and Heat Treatment
基金
河南省自然科学基金(242300420018)
河南省高等学校重点科研项目(20A430010)。
