Ce含量和T6热处理对Al-0.3Fe-0.1Si合金组织与性能的影响  

Effect of Ce Content and T6 Heat Treatment on Microstructure and Properties of Al-0.3Fe-0.1Si Alloy

作　　者：唐鹏[1,2] 杨学轩 于凯来 黄赛莎 覃皓 TANG Peng;YANG Xue-xuan;YU Kai-lai;HUANG Sai-sha;QIN Hao(School of Resources and Environmental Materials,Guangxi University,Nanning 530004,Guangxi,China;State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,Guangxi University,Nanning 530003,Guangxi,China;Guangxi Testing Institute of Product Quality,Nanning 530007,Guangxi,China)

机构地区：[1]广西大学资源与环境材料学院,广西南宁530004 [2]省部共建特色金属材料与组合结构全寿命安全国家重点实验室,广西南宁530003 [3]广西产品质量检验研究院,广西南宁530007

出　　处：《铸造》2023年第11期1456-1462,1455,共8页Foundry

基　　金：国家自然科学基金(52261024);广西自然科学基金(2023GXNSFAA026374);中国博士后科学基金(2021M693800);广西石化资源加工与过程强化技术重点实验室开放项目(2022K005);广西大学大学生创新创业训练计划(202210593036)。

摘　　要：研究了稀土元素Ce和T6热处理工艺对Al-0.3Fe-0.1Si合金组织和性能的影响。结果表明,添加适量的稀土Ce和T6热处理均可抑制晶粒长大,并有效细化Al-0.3Fe-0.1Si合金的晶粒尺寸。当稀土Ce的加入量为0.2%时,铸态合金的抗拉强度为81.7 MPa,比加入量为0.1%时提高了10.7%。稀土Ce的加入量为0.3%时,T6态合金的电导率为58.13%IACS,比铸态合金提高了2.3%。热处理前后的Al-0.3Fe-0.1Si-0.1Ce合金与Al-0.3Fe-0.1Si-0.3Ce合金的电导率接近。当稀土Ce的加入量为0.1%~0.2%时Al-0.3Fe-0.1Si合金获得较好的综合性能。本研究的结果可为导电Al-0.3Fe-0.1Si合金制备提供理论和试验参考。This paper investigated the effects of rare earth Ce and T6 treatment on the microstructure and properties of Al-0.3Fe-0.1Si alloy.The results demonstrated that adding appropriate amounts of rare earth Ce and T6 treatment could inhibit grain growth and effectively refine the grain size of the Al-0.3Fe-0.1Si alloy.When the amount of rare earth Ce added was 0.2%,the tensile strength of the as-cast alloy was 81.7 MPa,which increased by 10.7%compared to that when the amount added was 0.1%.When the amount of rare earth Ce added was 0.3%,the electrical conductivity of the T6 alloy was 58.13%IACS,which increased by 2.3%compared to the as-cast alloy.The electrical conductivity of the Al-0.3Fe-0.1Si-0.1Ce alloy and Al0.3Fe-0.1Si-0.3Ce alloy were similar before and after heat treatment.The Al-0.3Fe-0.1Si alloy achieved its best performance with rare earth Ce added in the range of 0.1%-0.2%.The results of this study provided a theoretical and experimental reference for the preparation of conductive Al-0.3Fe-0.1Si alloy.

关 键 词：稀土元素CE T6热处理 Al-0.3Fe-0.1Si合金 导电性能 力学性能 

分 类 号：TG166[金属学及工艺—热处理] TG113[金属学及工艺—金属学]