Abstract
It has been shown that in FeAl/Fe3Al/Fe(Al) coatings formed on a steel base using explosion welding and subsequent heat treatment, the main failure mechanism is cohesive. Peeling and chipping of coatings occurs only under heavy loads or in case of weak adhesion. It has been established that the hardness of a layered FeAl/Fe3Al/Fe(Al) coating with a thickness of 440 μm increases from the substrate to the surface, reaches a maximum at a distance of 200 μm from the surface, and then decreases due to an increase in porosity. Its relative wear resistance is ~1.5 times higher than the St3 steel base.
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