Abstract
By a combination of the X-ray phase and fluorescence analyses, it was shown that a hardened layer formed during electric spark alloying of 65G steel using a processing electrode made of T15K6 hard alloy is a nanocrystalline material. The ratio of the crystalline and the amorphous phases in it was achieved by changing the discharge energy. Since an increase in the discharge energy leads to an increase in the surface roughness and its amorphization, there is an optimal value of the discharge energy at which the maximum wear resistance of the resulting nanocomposites is achieved. At E = 0.2 J, the wear resistance of the hardened layer is 7–10 times higher than that of an untreated surface.
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