基于机械合金化及热处理制备Fe_3Al金属间化合物粉体材料  

Preparation of Fe_3Al intermetallic compound powder by mechanical alloying and heat treatment

作　　者：廖凯[1] 揭晓华[1] 姚远[1] 刘烨[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《金属热处理》2014年第2期23-25,共3页Heat Treatment of Metals

摘　　要：通过机械合金化并结合热处理制备出以Fe3Al金属间化合物为主要物相的粉末材料。利用差热分析仪、X射线衍射和扫描电镜对制备过程中粉体的组织形貌、物相变化过程进行了研究。结果表明,制备过程中其物相转变趋势主要是由铝含量高物相向铁含量高物相转变,转化顺序为:Fe4Al13→FeAl6→Fe2Al5→Fe3Al,通过30 h球磨和750℃保温120 min的退火热处理可以获得以Fe3Al金属间化合物为主要物相的粉体材料。Fe3Al intermetallic compound powder was prepared by mechanical alloying and heat treatment. Morphology and phase transformation of the powder were investigated during preparation by using of EDS-TG, XRD and SEM. The results show that the phase transformation trend is from the phase with high aluminum content to that with high iron content during the preparation process, and the probable phase transformation sequence is Fe4 Al13→FeA16→Fe2A15→Fe3 Al. The powder material mainly containing Fe3Al can be obtained when milled for 30 h and annealed at 750℃ for 120 min.

关 键 词：FE Al金属间化合物粉末 制备工艺 物相转化机制 

分 类 号：TF123.111[冶金工程—粉末冶金]