Abstract
The wear rate of hydrogenated specimens of high-nitrogen cold-worked manganese steels is five times larger than that of nonhydrogenated ones. In the absence of hydrogenation, the size of the wear products ranges from 25 to 40 μm at P = 400 N and from 40 to 100 μm at P = 500 N. For hydrogenated specimens, the size of the wear products is above 350 μm under a load of 250 N and ranges from 600 to 1000 μm at P = 400 N. The morphology of the wear products demonstrates an excellent microrelief, which indicates that fracture occurs by different mechanisms of fracture during the formation of a particle under friction conditions. On the products, we detected dimples in which, probably, particles containing σ-type intermetallics, carbides, and nitrides, which cause the initiation of cracks under both sliding friction and rolling friction, spalled.
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