Figure 5

(a) Stress amplitude, σ_a, as a function of number of cycles to failure, N_f, of Zr_41.2Ti_13.8Cu_12.5Ni₁₀Be_22.5 MG under uniaxial fatigue loading for different sample geometry; (b) σ_a as a function of N_f of various Zr-based MGs with different compositions under uniaxial fatigue loading. The data was obtained from refs 41, 42, 43, 44, 45, 46,50, 51, 52, 53, 54 and taken from the tension-tension fatigue experiments with R = 0.1, except for the data from Hess et al.⁴⁵ who performed tension-compression fatigue experiments with R = −1. Note that the σ_a does not reflect the stress concentration factor at the notch root and is defined as the load amplitude divided by the reduced cross-sectional area.