Method for making castable carbonitride alloys
Abstract
Abstract A METHOD FOR FABRICATING IMPROVED CAST REFRACTORY TOOLING MATERIALS IS DISCLOSED WHICH COMPRISES PREPARING A MELT OF TITANIUM-TUNGSTEN-CARBON-BASE ALLOY COMPOSITIONS (TIXW1X)CZ, OR TITANIUM-TUNGSTEN-NITROGEN-CARBON BASE ALLOY COMPOSITIONS (TIXW1-X)(NYC1-Y)Z UNDER A NITROGEN-CONTAINING ATMOSPHERE, IN WHICH THE MOLE FRACTION X IS VARIABLE BETWEEN THE LIMITS 0.25 AND 0.70, THE MOLE FRACTION Y IS LESS THAN 0.50, THE STOICHIOMETRY PARAMETER Z, WHICH MEASURES THE COMBINED GRAMATOMS OF NITROGEN AND CARBON PRESENT PER GRAMATOM METAL IN THE ALLOY, IS VARIABLE BETWEEN 0.25 AND 0.45, AND RAPIDLY COOLING THE MELT TO FORM A CARBONITRILE-METAL ALLOY COMPOSITE HAVING A FINEGRAINED MICROSTRUCTURE CONSISTING OF A REFRACTORY, HARD CHARBONITRILE PHASE AND A METAL PHASE, WITH THE METAL PHASE BEING RICH IN TUNGSTEN AND CONTRIBUTING TOUGHNESS TO THE COMPOSITE AND THE CARBONITRILE PHASE HAVING TITANIUM AS ITS BASE METAL.
Inventors
- 👤 Erwin Rudy
Bibliographic Details
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