Abstract: According to the condition that rare studies are working on micro-grinding temperature field for the nickel-based single crystal superalloy which has strong anisotropy ，three dimensional simulation model based on the Hill model was established by ALE method for temperature simulation in micro-grinding process for nickel-based single crystal superalloy. The distribution and variation of temperature fields in the micro-grinding process were discussed， and the influences of grinding depth， grain velocity and different crystal face (100)，(110) and (111) on the micro-grinding temperature were analyzed. The simulation results showed that the high temperature zone happens in the semi ellipse region between the front surface of abrasive and the workpiece. The grinding temperature increases with the grinding depth and grinding speed. During the micro-grinding of single crystal materials， the temperature of (111) crystal plane is the highest， and the (110) is the second， and the (100) is the least.

Key words: nickel-based single crystal superalloy, grinding, micro-grinding, grinding simulation, grinding temperature field