热处理制度对Ti.pdf

第 20 卷专辑 1 中国有色金属学报 2010 年 10 月 Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010 文章编号：1004-0609(2010)S1-s1068-05 热处理制度对 Ti-1300 合金组织和力学性能的影响 葛 鹏，周 伟，赵永庆 (西北有色金属研究院，西安 710016) 摘 要：研究了 Ti-1300 钛合金 d 160 mm 棒材经β 相变点下固溶时效及β 退火加时效热处理的性能与组织演变。 结果表明：通过热处理，Ti-1300 合金在高的强度水平下具有良好的塑性及韧性，并且显示出深淬透性的特征。 当采用β 相变点下固溶时效处理时，可获得如下力学性能：抗拉强度≥1 250 MPa，伸长率≥8%。当采用β 退火 随炉缓慢冷却加时效处理时，尽管强度较低，但可获得更高的韧性，并且棒材的横向和纵向性能没有明显的差别， 1/2 通过调整热处理参数，可获得如下力学性能：抗拉强度≥1 100 MPa，伸长率≥8%，断裂韧性≥70 MPa·m 。 关键词：Ti-1300 合金；固溶时效；β 退火；强度 中图分类号：TG 146.3 文献标志码：A Influence of heat treatment on microstructure and mechanical properties of Ti-1300 alloy GE Peng, ZHOU Wei, ZHAO Yong-qing (Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China) Abstract: The mechanical properties and microstructures of Ti-1300 titanium alloy rod with diameter of 160 mm after solution plus aging treatment and β annealing plus aging treatment were investigated. The results show that good ductility and toughness could be achieved for Ti-1300 rod at high strength level after heat treatment. The alloy also presents deep quenching characteristics. After solution plus aging treatment, such mechanical properties (ultimate tensile strength no less than 1 250 MPa, elongation no less than 8%) could be achieved. After β annealing plus aging treatment, the strength is relatively low; however, the toughness is improved and there is no obvious di