Influence of environmental conditions on fatigue behavior of a titanium alloy for turbine blade
An investigation has been carried out to clarify the influence of simulated service environments on the fatigue performance of titanium alloy for turbine blade. An environmental facility was constructed to simulate the low oxygen contented steam system and salt solution system for an axial fatigue testing machine. Fatigue tests were carried out in saturated steam at 100℃ with less than lppm oxygen, and in 3.5％ sodium chloride solution at 80℃. Results show that, compared with results for air at room temperature, the fatigue strength is reduced, and the maximum reduction is observed in steam environment at 0.1 stress ratio. The fracture appearance of specimens is discussed to reveal the fatigue failure mechanism in simulated service environments.
Yu-Jia Li Fu-Zhen Xuan Shan-Tung Tu Zhengdong Wang
Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
国际会议
2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011
合肥
英文
237-241
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）