钼铌合金单晶性能分析  

PERFORMANCE ANALYSIS ABOUT MOLYBDENUM-NIOBIUM ALLOY AND MO-Nb SINGLE CRYSTAL ALLOY

作　　者：张清[1] 李中奎[1] 胡忠武[1] 殷涛[1] 张军良[1] 张廷杰[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《中国钼业》2007年第1期31-33,37,共4页China Molybdenum Industry

摘　　要：采用20 kW电子束区域熔炼炉制备出大尺寸Mo-Nb合金单晶,通过x射线θ扫描旋转法测试了单晶的晶体取向,结果显示所制单晶均为<111>晶向,晶向偏角<2.6°。对所制单晶进行了室温拉伸性能测试,并采用扫描电镜对Mo-Nb合金烧结条、原料棒以及单晶的室温拉伸断口作了分析对比,单晶的拉伸断口表现出典型的解理断裂特征。The large size Mo - Nb alloy single crystal was obtained by using 20 kW electronic beam regional melting furnace. The crystal orientation was tested through XRD, and the tension property was also tested. The results show that the single crystals orientation is complete 〈 111 〉, and the angle of deflection of the crystal 〈 2.6°. The fracture surface of the Mo - Nb alloy sintering strip, the raw material stick and tension sample were analyzed, and it shows that the fracture surface of the single crvstal is tvpically cleavage fracture.

关 键 词：Mo—Nb 合金单晶 晶向 拉伸性能 断口分析 

分 类 号：TG115[金属学及工艺—物理冶金]