Importance

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Abstract

The invention is suitable for the manufacture of flat or shaped titanium matrix composite articles having improved mechanical properties such as lightweight plates and sheets for aircraft and automotive applications, heat-sinking lightweight electronic substrates, bulletproof structures for vests, partition walls and doors, as well as for sporting goods such as helmets, golf clubs, sole plates, crown plates, etc. A fully-dense discontinuously-reinforced titanium matrix composite (TMMC) material comprises (a) a matrix of titanium or titanium alloy as a major component, (b) ceramic and/or intermetallic hard particles dispersed in the matrix in the amount of ≦50 vol. %, and (c) complex carbide- and/or silicide particles at least partially soluble in the matrix at the sintering or forging temperatures such as Ti₄Cr₃C₆, Ti₃SiC₂, Cr₃C₂, Ti₃AlC₂, Ti₂AlC, Al₄C₃, Al₄SiC₄, Al₄Si₂C₅, Al₈SiC₇, V₂C, (Ti,V)C, VCr₂C₂, and V₂Cr₄C₃ dispersed in the matrix in the amount of ≦20 vol. %. The invention can be used to produce near-full density near-net shape parts from titanium matrix composite materials with acceptable mechanical properties without a hot deformation.

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First Claim