低温真空扩散反应制备高性能TiAl合金粉  

Preparation of TiAl Alloy Powders by Diffusion Reaction at Low Temperature and in High Vacuum

作　　者：王军[1] 邵慧萍[1] 郭志猛[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《稀有金属材料与工程》2013年第6期1264-1267,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50774010);新金属材料国家重点实验室开放基金资助项目(2010Z-04);国家教育部回国人员科研启动基金资助项目

摘　　要：通过高能球磨均匀混合以及低温真空预烧工艺制备TiAl合金粉,原料为粒度43μmTi粉和9~12μmAl粉,研究不同温度下不同保温时间后Ti、Al混合粉的合金化程度。结果表明：高能球磨1h的Ti、Al混合粉在500℃保温2h,再在600℃保温3h能制得主要为TiAl相和少量Ti3Al相的合金粉,制备合金粉的平均粒径为20μm左右。TiAl alloy powder was prepared by high-energy ball milling and heat preservation under the condition of low temperature and high vacuum with titanium powder of 43 μm and aluminium powder of 9～12 μm as starting materials. After heat treated for different time and at different temperatures, the alloying of blended powder of titanium and aluminium was investigated. The results show that the alloy powder with the main intermetallic compounds of TiAl and a small quantity of Ti 3 Al can be obtained through 1 h high-energy ball milling and heat preservation at 500 ℃ for 2 h, and 600 ℃ for 3 h in high vacuum. The particle size of the prepared alloy powder is about 20 μm.

关 键 词：TiAl合金粉 高能球磨 低温真空 

分 类 号：TF125[冶金工程—粉末冶金]