Effects of Thermal Exposure on Low Cycle Fatigue Behavior of Ti600 Titanium Alloy
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.
L.Y. Xie, M.N. James, Y.X. Zhao and W.X. Qian
T. Yu et al., "Effects of Thermal Exposure on Low Cycle Fatigue Behavior of Ti600 Titanium Alloy", Advanced Materials Research, Vols. 118-120, pp. 611-615, 2010