(1. 宝鸡钛业股份有限公司,宝鸡 721014;
2. 中国科学院 金属研究所,沈阳 110016;
3. 北京有色金属研究总院,北京 100016)
摘 要: 研究组织形态与TA15钛合金损伤容限性能的关系。结果表明:组织形态对TA15钛合金损伤容限性能的影响较大,细片未变形魏氏组织、变形魏氏组织和网篮组织具有较高的断裂韧性和较低的疲劳裂纹扩展速率,同时仍保持较高的塑性,具有较好的损伤容限性能。
关键字: 显微组织;TA15钛合金;损伤容限性能
TA15 titanium alloy
(1. Baoji Titanium Industry Co., Ltd., Baoji 721014, China;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
3. General Research Institute for Nonferrous Metals, Beijing 100016, China)
Abstract:The relationship between microstructure and damage-tolerance property of TA15 titanium alloy was studied. The results show that the microstructure has a great effect on damage-tolerance property of TA15 titanium alloy. The undeformed Widmanstatten, deformed Widmanstatten and net structure have higher fracture toughness and lower fatigue crack-extending rate, while still maintain the performance of high plasticity and good damage-tolerance.
Key words: microstructure; TA15 titanium alloy; damage tolerance property