铈对铝合金微观组织与性能的影响  

Effect of Cerium on Microstructure and Properties of Aluminum Alloys

作　　者：杨治刚 李凯丽 绳天庆 吕欣冉 余建波[2] Yang Zhigang;Li Kaili;Sheng Tianqing;Li Xinran;Yu Jianbo(Shijiazhuang Tiedao University,School of Materials Science and Engineering,Shijiazhuang 050043,China;Shanghai University,State Key Laboratory of Metallurgy and Preparation of High Quality Special Steel Jointly Constructed by the Ministry and the Province,Shanghai 200444,China)

机构地区：[1]石家庄铁道大学材料科学与工程学院,河北石家庄050043 [2]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444

出　　处：《中国稀土学报》2024年第3期451-467,共17页Journal of the Chinese Society of Rare Earths

基　　金：国家科技重大专项(J2019-VI-0023-0140)资助。

摘　　要：稀土元素以其高效性得到极大关注,Ce作为地壳中含量最多的稀土元素,加入Al合金可极大地细化晶粒,同时生成Al_(11)Ce_(3)第二相,起到第二相强化的作用,极大改善Al合金的硬度、强度、耐高温性、导电性等,这些特殊的性能使Al-Ce合金在长距离高架电缆、航天燃料低温贮箱、军用飞机内部零件、现代化轻量化汽车机身等领域实现应用。基于此,本文系统总结了国内外在Ce元素对不同Al合金体系的铸造性、微观组织和性能等方面的研究成果,并对其应用前景进行了展望。Rare earth elements have received great attention due to their high efficiency.As the most abundant rare earth element in the crust,Ce can greatly refine the grains by adding Al alloy,and at the same time,Al_(11)Ce_(3)second phase can be generated,which plays a role in strengthening the second phase and greatly improving the hardness,strength,high temperature resistance,conductivity,etc.These special properties enable AlCe alloy to be used in long-distance overhead cables,low-temperature storage tanks for aerospace fuel,internal parts of military aircraft modern lightweight automobile body and other fields.Based on this,this paper systematically summarizes the research results of the cast ability,microstructure and properties of Ce on different Al alloy systems at home and abroad,and looks forward to its application prospects.

关 键 词：铝合金 稀土元素 CE 微观组织 力学性能 

分 类 号：TG27[金属学及工艺—铸造]