PM-Materials for hot working tools

Tools and wear parts for compacting tools are subjected to high abrasive wear and mechanical loading at elevated temperatures, MMC's based in iron- or nickel with hard particles are developed and investigated. The materials were manufactured from powders by, hot isostatic pressing (HIP) and subsequently heat treated, Diffusion between hard phases and metal matrix brings about certain micro structures which were tested with respect to the resistance against sliding abrasion at room and elevated temperatures. Three-point bending tests and thermal cycling of the material was utilized to characterised the mechanical behaviour, Based on this results a toolkit for a roller press for briquetting was produced and brought into application.