元素合金化对Nb基高温合金组织和力学性能的影响  

Effect of Alloying Elements on the Microstructure and Mechanical Properties of Nb-Based High Temperature Alloys

作　　者：白润[1] 郑欣[1] 李中奎[1] 王东辉[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2007年第A03期359-362,共4页Rare Metal Materials and Engineering

摘　　要：综述了近年来国内外在合金化改善Nb基高温合金组织形貌、提高力学性能方面所取得的进展,分析了Ti,Cr,Hf和Mo等合金化元素对合金中Laves相,亚稳相Nb_3Si和γ-Nb_5Si_3的影响,总结了合金元素对材料力学性能的影响规律。Alloying is a useful method to enhance the mechanical properties of Nb-based high temperature alloy. The research progress in recent years on alloying method to reform the microstructure and to enhance the mechanical properties of Nb-based high temperature alloy was summarized. And discuss the effect of alloying elements such as Ti, Cr, Hf and Mo on the Laves phase, metastable phase Nb3Si and γ-Nb5Si3 was studied. The effects of compositions on mechanical properties of alloy were also studied.

关 键 词：合金化元素 Nb基高温合金 Nb3Si Nb5Si3 

分 类 号：TG132.32[一般工业技术—材料科学与工程]