Process stress simulation of medium-high carbon steel after hard-face-welding during martensite transformation

This study focuses on the simulation of process stress of medium-high carbon steel during martensite transformation after hard-face-welding (hardfacing). Based on the measured results of temperature, residual stress field and the thermo-physical, mechanical parameters of the medium-high carbon steel, the finite element (FE) model of the stress fields were established. According to this model, the process stress of medium-high carbon steel during martensite transformation after hardfacing was analyzed in this work. The simulation results show that, the compressive stress appears on the surface of the specimen during hardfacing cooling process when martensite transformation occurs, while the large tensile stress will be appeared on the surface of the specimen and hold to room temperature with the increasing of the time.