Effects of Thermal Exposure on Low Cycle Fatigue Behavior of Ti600 Titanium Alloy

摘要：

Effects of thermal exposure on low cycle fatigue behavior of Ti600 alloy were investigated by LSCM, SEM and TEM. The results demonstrated that both the NTE specimens and the TE specimens showed the cyclic softening, within a total strain amplitude range from ±0.45％ to ±1.00％. Since the α2 phase precipitated in the αp phase during thermal exposure, the resistance of fatigue crack propagation of αp phase could be increased by the precipitation of α2 phase. Therefore, the low cycle fatigue (LCF) lives of Ti600 alloy after thermal exposure were longer than those without thermal exposure, at the same total strain amplitude.

关键词： Ti600 titanium alloy Low cycle fatigue Thermal exposure Cyclic stress response α2 phase

作者: Teng YU Lei WANG Yong-qing ZHAO Yang LIU

作者单位: Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern Univers Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China

会议类型: 国际会议

会议名称: The 2nd International Conference on Advances in Product Development and Reliability(第二届产品开发与可靠性进展国际会议 PDR2010)

会议地点: 沈阳

会议语种:英文

页码: 611-615

在线出版日期: 2010-07-28（万方平台首次上网日期，不代表论文的发表时间）