Mo对P/MTi-Mo合金烧结致密化和力学性能的影响  

Effect of Mo addition on Sintering Densification and Mechanic Properties of PM Ti-Mo Alloy

作　　者：汤慧萍[1] 刘海彦[1] 黄原平[1] 刘咏[2] 黄伯云[2] 

机构地区：[1]西北有色金属研究院,陕西西安710016 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《稀有金属材料与工程》2006年第12期1932-1935,共4页Rare Metal Materials and Engineering

基　　金：国家"863"高技术项目(2001AA332010)

摘　　要：研究了P/MTi-Mo合金中Mo对烧结致密化及力学性能的影响。用热膨胀仪分析了其收缩/膨胀特性,用扫描电镜及力学性能检测等分析手段研究了显微组织和力学性能。结果表明,Mo的添加不利于P/MTi-Mo合金的烧结致密化,但有利于Ti-Mo合金的显微组织细化。随着Mo含量的增加,组织细化作用更加明显。该晶粒细化作用大大改善了合金的室温塑性,使烧结态Ti-Mo合金的延伸率达到23%。The effects of molybdenum addition on the sintering densification and mechanic properties of Ti-Mo alloy were investigated. The expansion/shrinkage characteristic of the alloy was analyzed by a dilatometer. The microstructure and mechanical properties of the alloy were studied by SEM and mechanical property measurement and test. The results show that the addition of Mo can＇t accelerate the sintering densification, but is beneficial to microstructure refining of Ti-Mo alloy. With increasing of Mo content, the microstructure refming is more and more obvious, resulting in great improving the ambient temperature plasticity of the alloy, the elongation of as-sintered Ti-Mo alloy can reach 23%.

关 键 词：粉末冶金钛合金 烧结致密化 钼 力学性能 

分 类 号：TF124.5[冶金工程—粉末冶金]