Fatigue coaxing experiments on a Zr-based bulk-metallic glass

Fatigue coaxing experiments were conducted on a Zr-based bulk-metallic glass using three-point bending at room temperature following the generation of an S/N curve under conventional testing methods at R = 0.1. Each new specimen was cyclically loaded initially just below the fatigue limit for different numbers of cycles prior to increasing the mean stress in increments of 15–25 MPa after each additional cycle increment until the sample failed. Possible implications and source(s) of the increased fatigue limit are discussed.