(中国科学院 金属研究所，沈阳 110016)
摘 要: 采用拉伸性能测试和扫描电镜观察等方法，研究了冷拉拔变形量和时效温度对TB9合金丝材显微组织和力学性能的影响。结果表明：冷拉拔变形可以促进α相的弥散析出，随冷拉拔变形量增大，强度上升，塑性先升后降；经过30%冷拉拔变形的TB9合金具有良好的综合力学性能；在480~580 ℃时效，随时效温度升高，α相粗化，强度随之下降。
关键字: TB9钛合金；冷拉拔；时效处理；显微组织；力学性能
（Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China）
Abstract:The effects of cold drawing deformation and aging temperature on microstructures and tensile properties of TB9 titanium alloy wire were studied using tensile test and scanning electron microscopy. It is shown that cold drawing promotes the dispersed precipitation of α phase, and the strength increases while the plasticity rises at first and then decreases with rising the cold drawing deformation. Good mechanical property of TB9 alloy is obtained after 30% cold drawing deformation. α phase is coarsened and the strength decreases with increasing the aging temperature in the range of 480-580 ℃.
Key words: TB9 titanium alloy; cold drawing; aging; microstructure; mechanical property
