Cyclic stress–induced Bauschinger effect in wear of in situ formed TiC x -reinforced white iron composite

Abstract Bauschinger effect in wear of in situ formed TiC x /high Cr white iron composite (TiC x /HCWI) against 440C steel counter-ball was studied. Friction coefficients as a function of time and time of changes in direction when cycles numbers (CN) of 0, 1, 2, 5, 10 were tested, respectively. Besides, the relationship between wear diameter and CN and micrographs of the worn surface for 440C steel counter-ball were researched. What’s more, surface roughness (S a ), wear resistance and height difference between the peak and valley (S pv ) as a variation of CN, and micrographs of the worn surface for TiC x /HCWI were used to analyze the wear mechanism combined with the simulation results of wear microstress. This work shows that the obvious Bauschinger effect also appears in the wear process of TiC x /HCWI against 440C steel counter-ball compared with the previous work that TiC x /HCWI against Si 3 N 4 ceramic counter-ball. The current work further broadens the scope of application for TiC x /HCWI in the field of improving processing efficiency.