Research Article

Analysis and Research of the High-Cycle Fatigue Fracture Mode Based on Stress Ratio and Residual Stress of Ti-6Al-4V

Figure 7

Fatigue fracture surface of the specimen with residual stress. (a) R = 1.0, σa = 615 mpa, and Nf ≥ 2581250. (b) R = 0.6, σa  ≥ 184mpa, and Nf ≥ 9 447 144.
(a)
(b)