Study of wear particles formation at single asperity contact: An experimental and numerical approach

Wear particles generated due to the relative sliding of roll and sheet metal in bite are one main factors that contaminate surface a cold rolled steel sheet. The details wear mechanisms contact individual roll-sheet asperities define total amount generated. In this paper, micro-mechanical experimental approach is coupled with material point method (MPM) scratch simulations study friction behavior single asperity through metal. Micro-tribology experiments form testing showed ploughing dominant mechanism lubricated conditions, while wedge forming was absence lubricant. beneficial influence chrome plating rolls on formation found stem from its interaction lubricant as same not observed non-lubricated test conditions. MPM revealed almost all frictional resistance arises deforming substrate case an interfacial shear strength corresponding contact. contrast, that, unlubricated sliding, primarily shearing adhesion junction tearing body. Furthermore, using degree benchmark, critical plastic strain needed produce be between 3 4 for investigated interstitial-free steel.