Studies on the grinding characteristics of directionally solidified nickel-based superalloy

Directionally solidified nickel-based superalloy DZ4 is a kind of very important structural material nowadays produced domestically. Grinding burn usually occurs in the grinding process, thus being an obstacle to further promoting grinding efficiency and grinding precision. This paper has discovered the grinding mechanism of this new type superalloy on the basis of systematic analyses of the variable characteristics: the grinding force, grinding temperature, topography of the ground surface, hardness distribution of the surface layer, as well as morphology of the surface layer from a metallographical viewpoint. The results will be beneficial in the grinding of this new type superalloy with high efficiency and high precision.