The super alloy exhibits great strength and fatigue behaviour when nickel (Ni) is present in major quantities. Moreover, it possesses good corrosive resistant behaviour at high temperatures. However, these alloys are very difficult to machine under normal machining conditions due to their great strength and low heat dissolution. In this work, machining was performed on Hastelloy C276 under various machining conditions (speed, feed and depth) and environments (dry and cryogenic). Liquid nitrogen was used as a coolant in the machining region. The machinability of Hastelloy C276 was investigated with machining forces, temperature, surface roughness and hardness under different cutting conditions. Turning experiments that resulted from passing LN₂ drastically reduced temperature by up to 40%. Machining forces were minimal under cryogenic machining due to its effective lubrication property. Surface finish of the machined area improved by about 26% under cryogenic conditions. Both dry and cryogenic machining improved the hardness of the work material. The high cooling efficiency of LN₂ improved hardness of the machined surface was about 8-15%. Chip width and side-flow of chip material were reduced under cryogenic cooling. Moreover, adhesion and abrasion wear were observed minimally in cryogenic machining compared to dry machining. But no significant difference was observed in notch wear for both types of machining. Machinability of Hastelloy C276 significantly improved when LN₂ used as a cutting fluid.

当大量存在镍（Ni）时，超级合金表现出良好的强度和疲劳性能。此外，它在高温下具有良好的耐腐蚀性能。然而，由于它们的高强度和低散热性，这些合金在正常加工条件下很难加工。在这项工作中，在不同的加工条件（速度，进给和深度）和环境（干燥和低温）下对Hastelloy C276进行了加工。液氮在加工区域用作冷却剂。用不同切削条件下的机械加工力，温度，表面粗糙度和硬度研究了哈氏合金C276的可加工性。通过LN _2的车削实验大幅降低温度达40％。由于其有效的润滑性能，在低温加工下的加工力极小。在低温条件下，加工区域的表面光洁度提高了约26％。干式加工和低温加工均可提高工作材料的硬度。LN ₂的高冷却效率提高了加工表面的硬度，约为8-15％。在低温冷却下，切屑宽度和切屑材料的侧流减小。此外，与干式加工相比，在低温加工中观察到的附着力和磨损最小。但是，两种加工类型的缺口磨损均未观察到显着差异。当LN ₂用作切削液时，哈氏合金C276的切削性得到显着改善。