铸造2012，Vol.61Issue(6)：592-594,597,4.
电弧熔炼Cr-40Ti-20Nb三元合金的组织与压缩性能
Microstructure and Compression Properties of Cr-40Ti-20Nb Ternary Alloy Prepared by Arc Melting
摘要
Abstract
The ternary alloy Cr-40Ti-20Nb was successfully prepared by vacuum non-consumable arc melting. The alloy solidified microstructure and compression behavior were investigated by using optical microscope (OM), X-ray diffraction (XRD) as well as scanning electron microscope (SEM). The results show that the solidified microstructure of the ternary alloy Cr-40Ti-20Nb was mainly composed of Laves phase Cr2(Nb2 Ti) and Ti solid solution. As the solidification position was varied from the top to the bottom of the arc-melting ingot, the microhardness of the ternary alloy was measured ranging from 6 112 to 7 350 MPa, less than that of the Laves phase Cr2Nb by a factor of 20%. Moreover, the compression yield strengths of the ternary changed from 1 334 to 1 524 MPa at room temperature, close to that of the multi-component alloy Cr-12Nb-4Re-2Al. According lo these experimental results, Tl additions not only change the solidified microstructures of the Laves-phase Cr2Nb alloy, but also remarkably improve the plasticity of the Laves phase Cr2Nb alloy.关键词
真空非自耗电弧熔炼/Cr-Nb-Ti元合金/微观组织/压缩性能Key words
vacuum non-consumable arc melting/ Cr-Nb-Ti ternary alloy/ microstructure/ compression property分类
矿业与冶金引用本文复制引用
董旭坤,李双明,李克伟,薛云龙,傅恒志..电弧熔炼Cr-40Ti-20Nb三元合金的组织与压缩性能[J].铸造,2012,61(6):592-594,597,4.基金项目
国家自然科学基金(50971101,51074127) （50971101,51074127）
高等学校博士学科点专项科研基金项目(20096102110011) （20096102110011）
西工大基础研究基金项目资助(JC201029). （JC201029）
