Investigation of Very High Cycle Fatigue Behavior of TC17 Alloy
According to the loading characteristics of engine blades, a vibration bending fatigue system by using the ultrasonic fatigue test technique has been developed and the specimen is designed by finite element method, fatigue tests of TC17 between 106 and 109 cycles have been completed in this paper. The results show that the fatigue life of specimen increases over 107 cycles and the initiation of fatigue cracks transfers from only in the surface of specimen to both in the surface and the sub-surface with loading decreasing.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
L. Cheng et al., "Investigation of Very High Cycle Fatigue Behavior of TC17 Alloy", Advanced Materials Research, Vols. 295-297, pp. 1311-1314, 2011