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Presents the investigation of as cast microstructures of high temperature α+α 2 titanium alloys matrix composites reinforced by particles and fabricated using a reaction synthesis method by XRD, OM and SEM which reveals that the matrix transformed into single phase α 2 from two phases α+α 2 and reinforcing phases become Ti 3AlC and TiC from single phase TiC as C content increases to a critical value, and Ti 3AlC precipitates during solidification processing and points out that the morphologies of TiC and Ti 3AlC are of short lath shape and near spherical shape, respectively, and lattice parameters of matrix α 2 increase with the increasing of C content, but the lattice parameter of reinforcing phase TiC is lower than standard lattice parameter of TiC due to the C defection in TiC.
Presents the investigation of as cast microstructures of high temperature α + α 2 titanium alloys matrix composites reinforced by particles and fabricated using a reaction synthesis method by XRD, OM and SEM which reveals that the matrix transformed into single phase α 2 from two phases α + α 2 and reinforcing phases become Ti 3AlC and TiC from single phase TiC as C content increases to a critical value, and Ti 3AlC precipitates during solidification processing and points out that the morphologies of TiC and Ti 3AlC are of short lath shape and near spherical shape , respectively, and lattice parameters of matrix α 2 increase with the increasing of C content, but the lattice parameter of reinforcing phase TiC is lower than standard lattice parameter of TiC due to the C defection in TiC.