Relationship Between the Characteristics of the Crystallographic Texture of Low-Carbon Steels with Accumulation of Damages at the Early Stages of Fatigue Failure

Abstract

We studied texture change of low-carbon steel during high-cycle fatigue by ultrasonic echo-pulse method. We received the orientation distribution function coefficients using precise ultrasonic measurements of the elastic wave propagation times. Then pole figures were constructed. It is found that the texture sharpness nonmonotonic depends on the number of loading cycles. It is shown that the texture sharpness can be used as an indicator of the structural state of the alloy.