Grinding temperature and its consequences on induced residual stresses during grinding of nickel-based superalloys: a review


 In the modern era, the grinding process is economically preferred over conventional milling, turning, and drilling processes considering the factors of high tool wear and time constraints. The grinding process offers a more refined surface finish, high tolerances and is suitable for machining difficult-to-machine materials like nickel-based superalloy. High-Temperature application components used for aerospace industries always impose thermal problems due to their high corrosion resistance and low thermal conductivity which largely influence the surface integrity during machining nickel-based superalloys. Various techniques for grinding temperature measurement in the contact zone of wheel and workpiece and the effects of process parameters on grinding temperature and induced residual stresses are described in this paper. A comprehensive review has been carried out to control thermal damage due to high heat generation and its correlations with the induced residual stress at the ground surface during grinding of Ni-based superalloys by optimizing the grinding parameters, cooling environments and selection of grinding wheel and suggests new findings.