Duplex stainless steels (DSS) are preferred replacement to austenitic stainless steel because of their higher strength leading to economic benefits. However, poor ductility and thermal conductivity along with high toughness make them difficult to machine. In the present investigation, tool wear, cutting force and surface roughness were evaluated during dry turning of DSS 2205 using tungsten carbide inserts coated with AlTiCrN and AlTiN. High Power Impulse Magnetron Sputtering technique was used for coating the substrates. Cutting speeds of 100, 140 and 180 m/min; feed of 0.12, 0.15, and 0.18 mm/rev, and a fixed depth of cut of 0.8 mm were chosen as cutting parameters for dry turning. AlTiCrN coating exhibited highest adhesion strength of 110 N compared to 89 N by AlTiN coating. AlTiCrN coated tools exhibited highest tool life of 7840 mm, with least surface roughness of 0.72 µm and cutting force of 255 N. This is attributed to its excellent physical properties such as good adhesion, higher oxidation resistance and thermal stability, compared to AlTiN coated tool. AlTiCrN and AlTiN coated tools exhibited respectively 6-times and 4-times more tool life than uncoated tools. Combination of high speed (180 m/min) and low feed (0.12 mm/rev) resulted in least surface finish. Regression model developed from the experimental data showed closer agreement (95%) between predicted and experimental values of surface roughness.

双相不锈钢（DSS）是奥氏体不锈钢的首选替代品，因为它们具有更高的强度，从而带来了经济利益。然而，延展性和导热性差以及高韧性使其难以加工。在本研究中，使用涂有AlTiCrN和AlTiN的碳化钨刀片对DSS 2205进行干车削时评估了刀具磨损，切削力和表面粗糙度。高功率脉冲磁控溅射技术被用于涂覆基板。切割速度为100、140和180 m / min；选择0.12、0.15和0.18 mm / rev的进给量和0.8 mm的固定切削深度作为干车削的切削参数。与AlTiN涂层的89 N相比，AlTiCrN涂层的最高粘合强度为110N。AlTiCrN涂层刀具的最高刀具寿命为7840 mm，具有0.72 µm的最小表面粗糙度和255 N的切削力。与AlTiN涂层工具相比，这归因于其出色的物理性能，例如良好的附着力，更高的抗氧化性和热稳定性。AlTiCrN和AlTiN涂层工具的寿命分别是未涂层工具的6倍和4倍。高速（180 m / min）和低进给（0.12 mm / rev）的组合导致表面光洁度最低。根据实验数据开发的回归模型显示，表面粗糙度的预测值与实验值之间的一致性更高（95％）。AlTiCrN和AlTiN涂层工具的寿命分别是未涂层工具的6倍和4倍。高速（180 m / min）和低进给（0.12 mm / rev）的组合导致表面光洁度最低。根据实验数据开发的回归模型显示，表面粗糙度的预测值与实验值之间的一致性更高（95％）。AlTiCrN和AlTiN涂层工具的寿命分别是未涂层工具的6倍和4倍。高速（180 m / min）和低进给（0.12 mm / rev）的组合导致表面光洁度最低。根据实验数据开发的回归模型显示，表面粗糙度的预测值与实验值之间的一致性更高（95％）。