(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。
关键字: 钛合金；热处理；显微组织；力学性能
properties of Ti-62A alloy plate
（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, the comprehensive 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; mechanical property
