Directionally solidified nickel-based superalloy DZ4 is an important struct
ural material. However, the grinding burn occurs in grinding processes has
hindered the grinding efficiency and dimensional accuracy. This paper inves
tigates the grinding mechanism of this new type of superalloy based on the
systematical analyses of variable characteristics of the grinding force, gr
inding temperature, topography of ground surface, hardness distribution of
surface layer, as well as morphology of surface layer from a metallographic
al point of view. The results will be beneficial to grinding the superalloy
with high efficiency and high precision.