<p>Nickel-based alloy is a kind of high-property material widely used in aerospace. However, this kind of material is difficult to process, this is an urgent problem in this research area. In order to improve its machinability, TiAlN, TiCN, Al₂O₃ coating tools were used for dry cutting under heat-assisted machining conditions in this study. The temperature transfer during cutting was analyzed considering cutting speed, coating thickness and thermal contact resistance. The heat transfer process between workpiece and tool is described intuitively by finite element analysis method. Through the analysis of the experimental results, it is found that the cutting heat transfer is inversely proportional to the thermal working temperature. This phenomenon can be attributed to an increase in temperature, which reduces the applied cutting force and thus weakens the contact within the chip-tool interface (CTF), resulting in reduced heat transfer capacity. This can be seen as a direct result of thermal fluctuations and their indirect effects on the exchange of mechanical energy during cutting. However, the presence of the coating can reduce the temperature transferred to the tool base. The results show that the coating can effectively reduce the tool base temperature and cutting force, the tool base temperature can be reduced by 35–45%, the cutting force can be reduced by about 5–12%, Al₂O₃ coating tool reduction is the most obvious, which can effectively protect the tool base material. The increase of thermally assisted machining temperature also effectively reduces the tool wear depth. TiCN-coated tools show better wear resistance in all aspects, and the wear depth can be reduced by 11.6% when the thermally assisted machining temperature is 600℃.</p>