Abstract
Surface machining attrition treatment (SMAT) was performed on a copper-nickel coating of tool steel H12M to form a nanostructured (NS) layer on the surface of the sample. Tribotechnical, metallographic, physical and chemical properties of nanostructured copper-nickel coatings were investigated. The results showed that a significant increase (2.3 times) in the wear resistance of the coatings was achieved after high plastic deformation under a stress of 3.5 GPa. A structure was formed with a minimum size of coherent scattering regions (CSR) of 23 nm and a maximum crystal lattice microstrain value (CLM) of 1.25%.
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