Al-Ti-C-La中间合金的显微组织及其细化性能研究  

Research on Microstructure and Refinement Performance of Al-Ti-C-La Master Alloy

作　　者：徐琛 侯新刚[1,2] 丁万武[1,2] 陈太丽 赵小燕 XU Chen;HOU Xingang;DING Wanwu;CHEN Taili;ZHAO Xiaoyan(College of Materials Science and Engineering,Lanzhou Universitry of Technology,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metal,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《热加工工艺》2020年第18期32-36,共5页Hot Working Technology

基　　金：国家自然科学基金项目(51661021);甘肃省重点研发计划项目(18YF1GA061)。

摘　　要：以工业纯铝、Al粉、Ti粉、C粉和La2O3粉为主要原料,采用铝熔体原位反应法制备新型Al-Ti-C-La中间合金。借助XRD、SEM以及EDS,研究了该中间合金的显微组织和对纯铝的细化效果。结果表明:Al-Ti-C-La中间合金主要由Al基体、长条状Al3Ti相、颗粒状或团簇状Ti C相以及块状或包裹状Ti2Al20La相构成。Al-Ti-C-La中间合金的细化效果优于Al-Ti-C中间合金的,且具有良好的抗晶粒细化衰退性能。Taking commercial pure Al, Al powder Ti powder, graphite powder and La2 O3 powder as main raw material,new type of Al-Ti-C-La master alloy was prepared by in-situ reaction of aluminum melt. The microstructure of the master alloy and the refinement effect on pure Al were studied by XRD, SEM and EDS. The results show that Al-Ti-C-La master alloy mainly consists of Al matrix, lath-like Al3 Ti phase, particle-like or cluster-like Ti C phase and blocky-like or enwrapped-like Ti2 Al20 La phase. The refinement effects of Al-Ti-C-La master alloy are better than that of Al-Ti-C master alloy,which shows a good resisting resistance to grain thinning deterioration.

关 键 词：Al-Ti-C-La中间合金 晶粒细化 工业纯铝 显微组织 

分 类 号：TG146.2+1[一般工业技术—材料科学与工程]