Statistical fatigue strength evaluation and inelastic deformation generated during static and cyclic loading in Ce-TZP/alumina nanocomposite: Part 1—in air environment

Phase transformation induced fatigue of a Ce‐TZP/Al2O3 composite

“…Though the fatigue strength obtained in the present study was lower, the ratio of fatigue strength to initial bending strength was 0.76, which falled within the range from 0.84 to 0.67 as reported in the previous studies 9–13 . It implies that the fatigue strength might be estimated by knowing the initial bending strength.…”

“…As the maximum loading stress was 370 MPa, the specimens exhibited no failure at 10 6 cycles. This value is lower than the values reported in previous studies [9][10][11][12][13] One of the reasons can be related to the use of an annealing treatment; another one to the fact that the grain size of our specimens is larger. A coarser microstructure would lower the initial bending strength and fatigue strength.…”

“…The inner span (l) and outer span (L) of the 4-point bending fixture were 10 and 20 mm, respectively. The displacement speed was 5 mm/min, the stress (σ) under load (P) was estimated using the following equation, 12…”

“…For one of their Y‐TZPs, the fatigue strength was approximately 80% of initial bending strength. Ueno et al 12 . and Nawa et al 13 .…”

“…11 For one of their Y-TZPs, the fatigue strength was approximately 80% of initial bending strength. Ueno et al 12 and Nawa et al 13 measured the fatigue resistance of Y-TZP and Ce-TZP/Al 2 O 3 composite either in air or in water. These studies suggested that the fatigue strength of TZP and TZP/Al 2 O 3 composites were slightly greater than 70% of their initial bending strength.…”