Ce对含Sb的AZ80镁合金铸态显微组织和拉伸性能的影响  

Effects of Ce on as-cast microstructure and tensile properties of Sb-containing AZ80 magnesium alloy

作　　者：李上民 李春雨 刘运 宋洁 杨明波[1] 程仁菊 刘文君 LI Shangmin;LI Chunyu;LIU Yun;SONG Jie;YANG Mingbo;CHENG Renju;LIU Wenjun(Materials Science and Engineering College,Chongqing University of Technology,Chongqing 400054,China;Chongqing University Key Laboratory of Micro/Nano Materials Engineering and Technology,Chongqing University of Arts and Sciences,Chongqing 402160,China)

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054 [2]重庆文理学院微纳米材料工程与技术重庆市高校重点实验室,重庆402160

出　　处：《重庆理工大学学报（自然科学）》2022年第5期122-127,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆市技术创新与应用发展专项项目(cstc2019jscx-mbdxX0031,cstc2020jscx-msxmX0215);微纳米材料工程与技术重庆市高校重点实验室开放基金项目(KFJJ2003)。

摘　　要：研究了Ce对含质量分数为0.25%的Sb的AZ80镁合金铸态显微组织和拉伸性能的影响,结果表明:含Sb的AZ80试验镁合金的铸态组织主要由α-Mg基体和Mg_(17) Al_(12)相组成,加入质量分数为0.5%~1.5%的Ce后,合金中出现了Al_(4)Ce相和/或Al_(11)Ce_(3)相,同时晶粒变得相对细小,组织中Mg_(17)Al_(12)相的数量减少且其形貌从连续和/或断续网状分布转变为断续状分布。此外,在含Sb的AZ80试验合金中添加质量分数为0.5%~1.0%的Ce后,合金的室温拉伸性能总体呈增加趋势,尤其是添加质量分数为1.0%的Ce时,抗拉强度和延伸率改善明显,而当添加质量分数为1.5%的Ce后,合金的室温拉伸性能相对较差。The effects of Ce on the as-cast microstructure and tensile properties of the 0.25%Sb-containing AZ80 magnesium alloyare investigated in this paper.The results show that the as-cast microstructure of the Sb-containing AZ80 alloy is mainly composed ofα-Mg matrix and Mg_(17) Al_(12) phase,after adding 0.5%~1.5%Ce,the Al_(4)Ce and/or Al_(11)Ce_(3) phasesare formed in the alloy,the grains arerelatively fined,and the amount of the Mg_(17)Al_(12) phase decreases and its morphology changes from the continuous and/or the discontinuous network tothe discontinuous distribution.In addition,after adding 0.5%~1.0%Ce,the overall increasing tendencyis observed for the tensile properties of the Sb-containing alloy at room temperature(RT),especially after adding 1.0%Ce,the tensile strength and elongation is improved significantly.However,after adding 1.5%Ce,the tensile properties of the alloy at RT are relatively poor.

关 键 词：镁合金 AZ80镁合金 CE SB 

分 类 号：TG146.22[一般工业技术—材料科学与工程]