PROCESS FOR MANUFACTURING THREE-DIMENSIONAL PARTS MADE OF ALUMINIUM-TITANIUM ALLOY

A method of fabricating a sintered three-dimensional part, the method including: preparing an injection composition including a binder and a powder of a titanium-based alloy including aluminum and/or chromium; injecting the composition into a cavity of a mold to obtain a blank; eliminating the binde...

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Bibliographische Detailangaben
Hauptverfasser:	FRIBOURG, Guillaume, BIHR, Jean-Claude, CASTAGNE, Jean-François, GILLOT, Clément
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CASTING 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 fabricating a sintered three-dimensional part, the method including: preparing an injection composition including a binder and a powder of a titanium-based alloy including aluminum and/or chromium; injecting the composition into a cavity of a mold to obtain a blank; eliminating the binder present in the blank; a first step of sintering the powder, the powder subjected to a first pressure higher than or equal to 1 mbar to obtain a preform of the part; and a second sintering step during which a second pressure, which is lower than the first pressure, is imposed, the duration for which the second pressure is applied being selected so that the content by weight of aluminum and/or chromium in a layer having a thickness of 200 μm situated at the surface of the preform does not vary by more than 5% in relative value due to the second sintering step.