Investigation of the kinetics of hardening and destruction of the surface layer of nickel at friction loading

The authors investigated the kinetics of hardening of the surface layer of nickel at friction by the method of ferromagnetic resonance (FMR), electron microscopy and X-ray analysis. The cyclical changes in the dislocation density with time trials were determined. The characteristic stages of hardening at friction were defined. The processes that cause cycling of the material strength properties of the surface layer were studied. The basic mechanisms of hardening and destruction were determined. The interrelation of the kinetics of the strength characteristics and wear of metal at friction were investigated. The radar-cyclical nature of the wear layer by layer was determined.