Abstract
This article analyses mechanical properties (strength, toughness) and wear behaviour (in different wear conditions) of WC based cobalt bonded hardmetals (prospectively for metalforming), sintered by two different techniques: vacuum and compression sintering (sinterhipping). It was found that compared with ordinary sintering, the sinterhipping technology enables the improvement of hardmetal resistance to brittle fracture (failure caused by tension stresses) as well as to wear, especially in the conditions of prevailing adhesive surface failure (metalforming, particularly blanking). The results obtained are described by the Griffith's strength theory of brittle materials.
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