12th Tooling Conference & Exhibition - Tooling 2022

The improvement of material properties for tool applications has always been an overriding development topic. To minimize wear, tool steels, special alloys based on nickel
or cobalt and metal matrix composites (MMC) have been developed – either as molten or as powder metallurgical materials. In this study a new kind of material is described which combines the outstanding properties of CoCrW-alloys at high temperatures and the improved wear-resistance of MMCs incorporating additional hard phases in a matrix. A gas atomized powder of a carbide-rich matrix (Co = Balance, Cr = 28%, W = 4.5%, C=1%) is reinforced by titanium carbides (TiC, 10 ma.-% of total composition) and solidified by hot-isostatic pressing. The present study shows selected results on microstructure (e.g. SEM, EDX anal- yses), mechanical properties (e.g. hardness, bending fracture strength) as well as application examples.