In order to investigate how cutting parameters affect the nano-cutability of Ni-based high-temperature alloy GH4169, molecular dynamics (MD) simulations of the material have been conducted on a large-scale atomic molecular/massively parallel simulator (LAMMPS) for different cutting speeds and cutting depths. EAM potential is used between Ni, Fe and Cr, whereas Moses potential is used between the workpiece and the tool or between the tools. The results show that at the cutting depth of 1 nm, the chip shape has a tensile necking with increasing cutting speed; at the cutting depth of 3 nm, the shear line width increases with increasing cutting distance and there is an abrupt change in the evolution of both FCC and amorphous atoms at all cutting speeds. At the same cutting depth, the cutting area temperature increases with increasing cutting speed; at the same cutting speed, the cutting area temperature increases markedly with increasing cutting depth, too.The dislocation density of 1/6<112> Shockley with a cutting depth of 1 nm is higher than that of other depths at the same cutting speed,and the dislocation density of 1/6<112> Shockley is obviously positively correlated to cutting speeds at the same cutting depth.

为了研究切削参数如何影响镍基高温合金 GH4169 的纳米可切削性，在大型原子分子/大规模并行模拟器 (LAMMPS) 上对不同材料进行了分子动力学 (MD) 模拟。切削速度和切削深度。EAM 电位用于 Ni、Fe 和 Cr 之间，而摩西电位用于工件和工具之间或工具之间。结果表明，在1 nm切削深度处，随着切削速度的增加，切屑形状出现拉伸颈缩；在切割深度为 3 nm 时，剪切线宽度随着切割距离的增加而增加，并且在所有切割速度下，FCC 和非晶原子的演化都发生了突变。在相同的切削深度下，切削区温度随着切削速度的增加而升高；