Dislocation density and shear texture effects on grinding force during the grinding of maraging steel 3J33

This paper focuses on the change of dislocation density and shear texture generated in plastic deformation, and its effect on the grinding force during the grinding of maraging steel 3J33. The grinding force in a grinding arc is divided into three stages, i.e., rubbing, plowing and chip forming in turn, and each grinding arc is continuous. The large plastic deformation caused by the forming force of cutting has a significant effect on the nearest rubbing force in the next arc area by influencing the microstructure. However, it has little effect on the plowing force away from the cutting area. Therefore, a flow stress model with respect to the influence of dislocation density and texture was established to describe the relationship between the grinding forces of different grinding arcs and modify the total grinding force. The microstructure of the processed materials before and after grinding experiments was compared, and the corresponding shear texture, Taylor factor and dislocation density were analyzed. The analysis of the multi-stage forces composed elastic deformation and plastic deformation of offers a comprehensive understanding of dislocation density and shear texture evolution mechanisms during the grinding process that would be very beneficial for process optimization. At high wheel speed, lower workpiece speed and cutting depth could result in higher rubbing force, thereby achieving better polishing effect and lower surface roughness.