Fatigue Properties of High Silicon Stainless Steel

Abstract

Rotating bending fatigue tests were carried out for a high silicon stainless steel in order to clarify the fatigue properties through the successive observation of the crack initiation and its propagation behavior. The fatigue strength of high silicon stainless steel was increased by aging, which was caused by the increase in both of resistances for a crack initiation and its propagation. The effect of aging condition on the fatigue life was not or little, while the crack initiation and its propagation behavior was markedly influenced by aging condition. Aging condition is better for fatigue properties in under one, though it is better for static strength in peak or over one.