Adding or removing solute from a metal workpiece and then further processing

A first method of processing a metal workpiece comprises adding or removing solute from the workpiece and then homogenizing. A second method processing a metal workpiece by adding or removing solute therefrom comprises exposing a portion of the workpiece to a vapour which comprises a chemical reacta...

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Bibliographische Detailangaben
1. Verfasser:	CHARLES MALCOLM WARD-CLOSE
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY 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 DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A first method of processing a metal workpiece comprises adding or removing solute from the workpiece and then homogenizing. A second method processing a metal workpiece by adding or removing solute therefrom comprises exposing a portion of the workpiece to a vapour which comprises a chemical reactant which has a different level of reactivity to the solute than the metal and further comprises a flux for facilitating removal of a product of a reaction between the chemical reactant and the metal. A third method of processing a metal workpiece comprises forming said workpiece with an open porosity, adding or removing solute from the workpiece and then consolidating said object. The alloy may comprise one or more of titanium, vanadium, zirconium, molybdenum and/or niobium, e.g. Ti-6Al-4V and the solute may be one of oxygen, carbon, hydrogen or nitrogen. Also claimed are apparatus for performing the above methods.