Hot Compression Behaviour of In-Situ Synthesized (TiB+TiC)/Ti Composites Prepared by Hot-Pressing
In-situ 5 vol% TiB whisker and TiC particulates reinforced titanium composites were fabricated by blending Ti powder and B4C particulates followed by reactive hot-pressing. The microstructure of the composites was investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). Hot compression test was conducted on gleeble-1500 Thermal-Mechanical Simulator. XRD results show that two kinds of reinforcements with different shapes were formed during hot-pressing: TiB short-fiber and equiaxed TiC particles. The true stress-true strain curves is shown as work hardening curves when the compression temperature below 600°C, and a stable flow stress is seen when the compression temperature above 600°C. Peak flow stress of the composites are much higher than that of the unreinforced alloy.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Z. Z. Zheng et al., "Hot Compression Behaviour of In-Situ Synthesized (TiB+TiC)/Ti Composites Prepared by Hot-Pressing", Materials Science Forum, Vols. 475-479, pp. 877-880, 2005