稀土镧对A356铝合金组织的变质作用研究进展  

Research Progress of Rare Earth Lanthanum on Microstructure Modification of A356 Aluminum Alloy

作　　者：何兵 覃铭[1,2,3] 武磊 HE Bing;QIN Ming;WU Lei(Material Science and Engineering School,Baise University,Baise 533000,China;College of Ecological Aluminum Industry,Baise University,Baise 533000,China;Engineering Research Center of Advanced Aluminium Matrix Materials of Guangxi Province,Baise 533000,China)

机构地区：[1]百色学院材料科学与工程学院,广西百色533000 [2]百色学院生态铝产业学院,广西百色533000 [3]广西壮族自治区铝基新材料工程研究中心,广西百色533000

出　　处：《热加工工艺》2023年第23期24-28,共5页Hot Working Technology

基　　金：2019年国家自然科学基金资助项目(51961001);百色市科学研究与技术开发计划项目(百科20211801)。

摘　　要：组织的变质细化是提高A356铸造铝合金性能的关键。分别从单一La和La联合其他元素组成复合变质剂两种情况叙述了La对A356合金变质作用的近期研究成果,说明La等稀土元素对合金具有显著的变质作用,并探讨以La为主要变质剂最佳的质量百分数、相关工艺和作用机理。The modification and refinement of microstructure are the key effects of property improvement of A356 cast aluminum alloy.The recent research results show that La as a single modifier or combined addition with other elements as a compound modifier to modify A356 alloy were summarized.It is shown that La and other rare earth elements have obvious modification effects on A356 alloy,and the optimum mass percent,related technologies and mechanisms of La as the main modifier were discussed.

关 键 词：稀土镧(La) A356铝合金 变质 

分 类 号：TG292[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]