Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1991-11-08
1995-04-25
Mai, Ngoclan T.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75245, 75230, 419 12, 419 30, 419 38, 419 60, C22C 2914, C22C 1400
Patent
active
054095182
ABSTRACT:
A sintered titanium alloy is composed of a titanium matrix or titanium alloy matrix and hard particles dispersed in the matrix, the sintered titanium alloy comprises: 4-8 mass % of aluminum (Al); 2-6 mass % of vanadium (V); 0.15-0.8 mass % of oxygen (O); at least one element selected from the group consisting of 0.2-9 mass % of boron (B), 0.5-3 mass % of at least one of molybdenum (Mo), tungsten (W), tantalum (Ta), zirconium (Zr), niobium (Nb), and hafnium (Hf), 0.05-2 mass % of at least one of Ia Group elements, IIa Group elements, and IIIa Group elements, 0.05-0.5 mass % of at least one of halogens; with the balance being titanium (Ti) and inevitable impurities. A method for economically producing a high-density sintered titanium alloy comprises mixing a raw material powder composed of a titanium powder and a powder for solid-solution hardening, rubbing and pressing the titanium powder before, during or after the mixing, so as to cause the raw material powder to have a desired tap density, compacting the mixed powder, and sintering the green compact under no pressure.
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Furuta Tadahiko
Saito Takashi
Kabushiki Kaisha Toyota Chuo Kenkyusho
Mai Ngoclan T.
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