Effect of carbon content in carbon steels on formation of welding residual stress

Welding is a joining process that uses high amount of heat input. Thermal strains are formed around the weld beam during this process which is followed rapid cooling and remaining residual stresses. In this study, effect of carbon content of formation of welding residual stress is investigated within low alloy carbon steels. Residual stress within steel samples with different carbon content is measured using ultrasonic sound waves. Finite element method is used to perform three dimensional simulation of welding process of steel samples with different carbon content. Exper imental and numerical results of residual stress distributions are investigated in terms of carbon content.