Torsional Fatigue Properties of Pre-strained Low and Medium Carbon Steels

Abstract

In the present study, torsional fatigue properties of tensile pre-strained structural carbon steels have been investigated in view-point of fatigue strength, crack initiation and propagation behavior, hardness and so on. According to the experimental results, tensile pre-strain improves the torsional fatigue strength, increases the surface hardness and affects the crack initiation and propagation characteristics.