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Abstract

The process includes (a) mixing a titanium hydride powder having a particle size of .ltoreq.150 .mu.m with alloying metal powders (master alloys or elemental metal powders) having a particle size in the range of {fraction (1/15)}-2/5 of the maximal particle size of titanium hydride powder, (b) compacting the resulting powder mixture by molding at the pressures of 400-1000 MPa, (c) heating up to the sintering temperature of the predetermined alloy composition at variable pressures in a furnace chamber: initial heating to 400.degree. C. in vacuum of less than 10.sup.-2 Pa, then, heating to a temperature range of 400-900.degree. C. with the pressures up to 10.sup.4 Pa, which is controlled by hydrogen being emitted by the decomposition of titanium hydride contained in the compacted powdered alloy, and finally, heating to over 900.degree. C. to the sintering temperature at the pressure continually decreasing to the starting vacuum level, and (d) sintering. Heating to the sintering temperature is performed at the rate of 10-15 grad/min. The new technology allows the purity and mechanical properties of sintered titanium alloys and the manufacture of near-net shape sintered titanium articles to be controlled by a cost-effective method.

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