The molecular dynamics method was used to simulate repeated nano-friction on a nickel-based single crystal (NBSC) superalloy. The friction force, atomic displacement, wear scar morphology, subsurface defects, potential energy, and other aspects were comprehensively studied to understand the friction mechanism of NBSC during working conditions. The frictional force fluctuated significantly and the coefficient of friction decreased during the repeated friction process. As the friction cycles increased, the wear scars of the γ' phase deepened, whereas those in the γ phase became shallower. Simultaneously, repeated friction reduced the volume and number of stacking faults. Additionally, the two phases softened to some extent at higher temperatures, but the phase boundary still had good wear resistance at high temperatures.

分子动力学方法用于模拟镍基单晶 (NBSC) 高温合金上的重复纳米摩擦。综合研究摩擦力、原子位移、磨痕形态、次表面缺陷、势能等方面，以了解NBSC在工作条件下的摩擦机理。在反复摩擦过程中，摩擦力波动较大，摩擦系数下降。随着摩擦次数的增加，γ'相的磨痕加深，而γ相的磨痕变浅。同时，反复摩擦减少了堆垛层错的数量和数量。此外，两相在较高温度下有所软化，但相界在高温下仍具有良好的耐磨性。