MA制备ODS钴基高温合金粉末的研究  

STUDY ON PREPARATION OF OXIDE DISPERSION STRENGTHENED(ODS) Co-BASED SUPERALLOY POWDER BY MA

作　　者：周霆[1] 曲选辉[1] 汤春峰[1] 秦明礼[1] 贾成厂[1] 

机构地区：[1]北京科技大学材料科学与工程学院新金属材料国家重点实验室,北京100083

出　　处：《粉末冶金工业》2005年第6期8-12,共5页Powder Metallurgy Industry

基　　金：国家"863"计划资项目(No.2003AA331140)

摘　　要：为开发高性能的ODS钴基高温合金,通过机械合金化制备了Co-Cr-Ni-W-Y2O3的复合粉末,探讨了机械合金化对粉末颗粒大小,晶粒以及晶格畸变的影响,研究了加入过程控制剂对球磨粉末状态的影响。结果表明,随着球磨时间的延长,粉末粒度和晶粒都减小,晶格畸变增大;球磨8 h以上,粒度、晶格畸变变化趋势变缓,但球磨时间的进一步延长有利于元素更加均匀的分布;加入酒精球磨的粉末分散度明显比未加入酒精的粉末好,粒度更小。In order to manufacture high quality ODS cobalt-based superalloy,a new type of Y_2O_3 strengthened cobalt-based composite powder was prepared by mechanical alloying.The effects of some technological parameters,including milling time and processing control agent,on physical characteristics of powder were investigated by XRD and SEM.It was found that the particle size is decreased and the distortion of lattice is increased with the milling time.The influence of milling time is reduced after 8h.However,longer ...

关 键 词：机械合金化 钴基高温合金 粒度 晶格畸变 过程控制剂 

分 类 号：TF123.71[冶金工程—粉末冶金]