Experimental research on determining the correlation of the restored and unrestored microhardness of the wear-proof iron-nickel platings

Abstract

The correlation of the restored and unrestored material hardness is an important characteristic, widening data of mechanical properties of a material and its structure. This correlation depends upon the ratio of hardness of the material to module of its elasticity and the altitude of the roller of produced by the material pressed off the imprint. Examining the hardness Hh (unrestored microhardness) measured by the depth of the imprint and the hardness H (restored microhardness) measured by transverse size of the unloded imprint, attention should be focused on the fact that the latter is measured with regard to the roller, whereas the imprint depth is measured from the initial plane of the specimen.