METHOD OF HEAT TREATING A CEMENTED CARBIDE MATERIAL

This disclosure relates to a method of producing a tool comprising a substrate and a hard-face coating metallurgically bonded to the substrate. The method comprises the steps of: providing a steel substrate; providing a composition of fully sintered granulate grains; and then applying the fully sint...

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Bibliographische Detailangaben
Hauptverfasser:	KONYASHIN, IGOR YURIEVICH, HINNERS, HAUKE, RIES, BERND HEINRICH
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	This disclosure relates to a method of producing a tool comprising a substrate and a hard-face coating metallurgically bonded to the substrate. The method comprises the steps of: providing a steel substrate; providing a composition of fully sintered granulate grains; and then applying the fully sintered granulate grains onto the substrate. The resultant cemented carbide material on the steel substrate comprises a specific composition and includes a metastable phase having a nanohardness of at least 12 GPa and a Palmqvist fracture toughness of below 7 MPa m½. The method includes heat-treating the hard-face coating to at least partially decompose the metastable phase, to increase the Palmqvist fracture toughness.