热处理温度对Nb47Ti合金丝材组织和性能的影响  

Effect of Heat Treatment Temperature on Microstructure and Properties of Nb47Ti Alloy Wire

作　　者：王松茂[1] 白新房[1] 焦磊[1] 苗壮[1] 杨旭 郑莉[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《钛工业进展》2017年第5期27-30,共4页Titanium Industry Progress

基　　金：国家自然科学基金项目(51401171);西材创新基金项目(XBCL-3-16)

摘　　要：对Nb47Ti合金丝材进行了不同温度(750、800、850、900、950℃)的热处理,研究其微观组织结构、晶粒取向分布及性能的演变规律,结果表明:750℃×1 h/WQ热处理后的Nb47Ti合金具有最佳的强度与塑性匹配,其抗拉强度为586 MPa、断后伸长率为31.3%,断面收缩率为90.87%,维氏硬度为1 573 MPa;随着热处理温度升高,Nb47Ti合金晶粒呈长大的趋势,平均晶粒尺寸从29.3μm增加到89.8μm;热处理会明显改变Nb47Ti合金的取向差分布。The microstructures, grain orientation distribution and performance evolution of Nb47Ti alloy wire were studied after heat treated at different temperatures （750, 800, 850, 900, 950 ℃ ）. The results show that, after heat treated at 750 ℃ for 1 h with water quenching, the strength has the best match with ductility. The tensile strength after heat treatment can reach 586 MPa, the elongation is 31.3% , the reduction of area is 90. 87% and the Vickers hardness is 1 573 MPa. With the rise of heat treatment temperature, the average grain size increases from 29.3 μm to 89.8 μm. The heat treatment can significantly change the misorientation distribution of Nb47Ti alloy.

关 键 词：Nb47Ti合金 电子背散射衍射 热处理 显微组织 

分 类 号：TG146.416[一般工业技术—材料科学与工程] TG166[金属学及工艺—金属材料]