Abstract: GH4169 Nickel-based superalloys widely used, but it was difficult to cut.The residual stress of the machined surface could easily lead to the deformation of the workpiece, thereby the machining quality of the workpiece was affected.The variation of residual stress under different cutting parameters was studied by the simulation software Deform-3D. Simulation results showed that the change of cutting speed had little influence on the surface residual stress, the surface residual stress was increased with the increase of the cutting depth and the feed rate. The residual stress in workpiece was increased with the increased cutting parameters.

Key words: Nickelbased superalloys, Residual stress, Deform3D, Simulation analysis, Cutting parameters

摘要： GH4169镍基高温合金应用广泛，但是属于难以加工的材料，而且已加工表面的残余应力很容易导致工件变形，从而影响工件的加工质量。应用Deform3D软件，研究了不同切削用量下残余应力的变化规律。研究结果表明，切削速度的变化对表面残余应力的影响甚小|背吃刀量和进给量增大，表面残余应力随之增大|随着切削用量的增加，工件内部残余应力亦随之增加。

关键词: 镍基高温合金, 残余应力, Deform-3D, 仿真分析, 切削用量