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Herein, the analytic hierarchy process (AHP) and central composite experimental design in response surface methodology (CCD-RSM) are used to evaluate and optimize the tribological parameters of bionic textured AISI 4140-SnAgCu self-lubricating composite under the conditions of load ( L : 20–40 N), velocity ( V : 16–32 mm/s), and distance ( D : 40–80 m). AISI 4140 biomimetic composites exhibit excellent tribological properties under the conditions of  L27.15 / V16.43 / D40 ,  L27.05 / V17.08 / D60 , and  L27.42 / V17.85 / D80 , respectively. The sensitivities of influence factors on the tribological overall score are load, velocity, and distance, in order from high to low. The good antifriction properties of self-lubricating composites under conditions with the optimized tribological parameters benefit from the fact that the solid lubricants are uniformly spread at the contact interface.

tribology transactions

Assessment and Optimization of Tribological Parameters for Bionic Textured AISI 4140-SnAgCu Self-Lubricating Composite Under Dry Sliding Conditions Using AHP and RSM