Abstract
The evolution of sinterability, microstructure and mechanical properties for the spark plasma sintered(SPS) Ti from commercial pure titanium(CP-Ti) was studied. The densification of titanium with 200 mesh and 400 mesh pass powder was achieved by SPS at <TEX>$750{\sim}1100^{\circ}C$</TEX> under 10 MPa pressure and the flowing <TEX>$H_2$</TEX>+Ar mixed gas atmosphere. The microstructure of Ti sintered up to <TEX>$800^{\circ}C$</TEX> consisted of equiaxed grains. In contrast, the growth of large elongated grains was shown in sintered bodies at <TEX>$900^{\circ}C$</TEX> with the 400 mesh pass powder and the lamella grains microstructure had been developed by increasing sintering temperature. The Vickers hardness of 240~270 HV and biaxial strength of 320~340 MPa were found for the specimen prepared at <TEX>$950^{\circ}C$</TEX>.
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