Finite Element Simulation on the Rolling Contact Fatigue Behavior of 42CrMoVRE Bearing Steel
DU Zejing1,2, ZHU Yankun1,2, ZHANG Peng1,2,*, ZHANG Zhefeng1,2
1 School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China 2 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Abstract: The high-temperature tempered microstructure (tempered sorbite) and low-temperature tempered microstructure (tempered martensite) of 42CrMoVRE steel were studied under idealized RCF simulation conditions. The results indicated that the maximum shear stress and cumulative plastic strain were concentrated at a subsurface depth of 140 μm, identifying this region as the critical area for RCF crack initiation. Experimental RCF results confirmed that for subsurface-origin failures, cracks formed near 140 μm below the surface and propagated towards the surface, ultimately causing failure, which aligned with the simulation predictions. Cumulative plastic strain curves were derived from simulation data. Under contact stresses of 3.5 GPa and 4.5 GPa, the strain curves for the high-temperature tempered and low-temperature tempered microstructures displayed similar trends, with higher maximum values observed for the latter. The simulation results corresponded well with the experimental S-N relationship for RCF. This finite element method provides an efficient approach for predicting the RCF life of materials, offering significant time-saving advantages.
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2026, Vol. 40 
