Composite metal powder and production thereof

Abstract

Abstract D R A W I N G A WROUGHT COMPOSITE METAL POWDER, OR MECHANICALLY ALLOY METAL POWDER, IS PROVIDED COMPRISED OF A PLURALITY OF CONSTITUENTS, AT LEAST ONE OF WHICH IS A METAL CAPABLE OF BEING COMPRESSIVELY DEFORMED, THE COMPOSITE POWDER BEING PREFERABLY IN THE HEAVY COLD WORKED CONDITION, I.E., HAVING SUBSTANTIALLY THE SATURATION HARDNESS FOR THE SYSTEM INVOLVED, THE PARTICLES THEREOF BEING CHARACTERIZED METALLOGRAPHICALLY BY AN INTERNAL STRUCTURE COMPRISED OF THE STARTING CONSTITUENTS INTIMATELY UNITED TOGETHER AND IDENTIFIABLY MUTUALLY INTERDISPERSED. THE PROCESS EMPLOYED IN PRODUCING THE COMPOSITE METAL POWDER RESIDES IN PROVIDING A DRY CHARGE OF ATTRITIVE ELEMENTS AND A POWDER MASS COMPRISING A PLURALITY OF CONSTITUENTS, AT LEAST ONE OF WHIC IS A METAL CAPABLE OF BEING COMPRESSIVELY DEFORMED, SUBJECTING THE CHARGE TO AGITATION MILLING UNDER HIGH ENERGY CONDITIONS IN WHICH A SUBSTANTIAL PORTION OR CROSS SECTION OF THE CHARGE IS MAINTAINED KINETICALLY IN A HIGHLY ACTIVATED STATE OF RELATIVE MOTION, AND CONTINUING THE MILLING TO PRODUCE WROUGHT COMPOSITE METAL POWDER IN WHICH PARTICLES THEREOF HAVE SUBSTANTIALLY THE SATURATION HARDNESS FOR THE SYSTEM INVOLVED.

Inventors

• 👤 J Benjamin

Bibliographic Details