热处理对ti-62a 合金厚板组织及性能的影响.pdf

第 20 卷专辑 1 中国有色金属学报 2010 年 10 月
Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010
文章编号:1004-0609(2010)S1-s0681-04
热处理对 Ti-62A 合金厚板组织及性能的影响
孙明,叶文君,惠松骁,于洋
(北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京 100088)
摘要:研究固溶+时效工艺对一种新型高强高韧损伤容限型钛合金 Ti-62A 的组织与拉伸性能的影响。结果表明:
该合金在两相区固溶+时效处理后,合金的基本组织类型为典型的网篮状组织,即层片状的α相和β转变组织;经
过热机械处理以后,合金的综合力学性能良好,抗拉强度达到 1 185 MPa,屈服强度达到 1 100 MPa,且兼具有良
好的塑性匹配。
关键词:钛合金;热处理;显微组织;力学性能
中图分类号: 文献标志码:A
Effects of heat treatment on microstructures and tensile
properties of Ti-62A alloy plate
SUN Ming, YE Wen-jun, HUI Song-xiao, YU Yang
(State Key Laboratory for Fabrication and Processing of Nonferrous Metals,
General Research Institute for Nonferrous Metals, Beijing 100088, China)
Abstract: Effects of solution and aging processing on microstructure and tensile properties of a new type of high strength
and high toughness titanium alloy for damage tolerance (Ti-62A) were discussed. The experimental results show that
typical microstructure of the alloy in α/β solution and aging is basket-like microstructure (the strip of α phase and β
changes structure). After the thermal mechanical processing, prehensive mechanical properties of the alloy are
excellent. The tensile strength of alloy is 1 185 MPa, and the yield strength is 1 100 MPa with a good plasticity.
Key words: titanium alloy; heat treatment; microstructure; m