Abstract
In this paper, the ZTC4/B/C titanium matrix composite containing 0·2–0·5 wt-%B and 0·5–2 wt-%C was fabricated using melting–casting process. The microstructure and mechanical properties of as cast ZTC4/B/C Ti matrix composite were investigated. The results indicate that the microstructures of as cast ZTC4/B/C were consisted of lamellar α, β at grain boundary and second phases of bar-like TiB and spherical-like TiC. The elastic modulus of ZTC4/B with 0·5 wt-%B is 145 GPa, 30% higher than that of the matrix alloy. The ultimate tensile strength of ZTC4/B/C with 0·5 wt-%B and 0·5 wt-%C reached 1300 MPa, 25% higher than that of the matrix alloy.
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