3Al基合金的納米切削表面質(zhì)量以獲得更好的服役狀態(tài)，結(jié)合納米級分子動力學(xué)模擬和微觀切削實(shí)驗(yàn)，探討了加載溫度（300~1050 K）與切削力、表面形貌的關(guān)聯(lián)性。分子動力學(xué)模擬結(jié)果顯示，在納米切削Ni3Al基合金過程中，加載溫度為750 K時的切削力波動相對于其他溫度最??；當(dāng)加載溫度在600~750 K時，影響表面形貌的凸起原子數(shù)量最少，即表明加載溫度為750 K左右時，Ni3Al基合金可以獲得較高的表面質(zhì)量。Ni3Al基合金微觀切削實(shí)驗(yàn)表明，當(dāng)加載溫度在600~750 K時，加工表面輪廓可以獲得較高的平整度，間接驗(yàn)證了在Ni3Al基合金納米切削的分子動力學(xué)仿真結(jié)果的可行性。研究結(jié)果表明，選取合適的加載溫度是改善Ni3Al基合金納米切削加工表面質(zhì)量的有效途徑。;In order to enhance the nano-cutting surface quality of Ni3Al-based alloy to obtain better service state, the nano-molecule dynamics (MD) simulation and micro-cutting experiment were combined to investigate the effect of loading temperature (300–1050 K) on cutting force and surface morphology. MD simulation results show that the fluctuation of cutting force is the smallest when the loading temperature is 750 K during nano-cutting process of Ni3Al-based alloy, compared with that at other temperatures. When the loading temperature is 600–750 K, the number of convex atoms affecting the surface morphology is the least, which indicates that Ni3Al-based alloy can achieve higher surface quality at loading temperature of about 750 K. The micro-cutting experiments of Ni3Al-based alloy show that higher flatness of the processed surface can be obtained at the loading temperature of 600–750 K, which indirectly verifies the feasibility of MD simulation results of the nano-cutting process of Ni3Al-based alloy. Results suggest that selecting appropriate loading temperature is an effective method to improve the nano-cutting surface quality of Ni3Al-based alloy."/>
3Al基合金;納米切削;加工表面;加載溫度;分子動力學(xué)仿真;微觀切削實(shí)驗(yàn);Ni3Al-based alloy;nano-cutting;processed surface;loading temperature;molecular dynamics simulation;micro-cutting experiment"/>