Material and process for its production

A method of making a composite material by combining a powdered matrix material with a second material, to form a composite comprising an at least partially martensitic phase in a matrix. The at least partially martensitic phase may be in the form of particles or wires or layers and it may contain e...

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Bibliographische Detailangaben
Hauptverfasser:	RAINER RAUH, EDUARD ARTZ, ULRIKE HUBER
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A method of making a composite material by combining a powdered matrix material with a second material, to form a composite comprising an at least partially martensitic phase in a matrix. The at least partially martensitic phase may be in the form of particles or wires or layers and it may contain elements such as Zr, Hf, Cu, Nb, Mn, Pd, Pt and/or Fe to stabilise the martensite. Furthermore, the composite may be manufactured by hot isostatic pressing, sintering, extrusion, forging or adding the second material in liquid form. In a specific example, the composite comprises 5-60 vol % martensitic nickel-titanium particles (of composition 48-52 atomic % of each of Ni and Ti) in a 6061 aluminium alloy matrix and is formed by mixing powdered aluminium with Ni-Ti powder, consolidating and then hot isostatic pressing.