Hot Compression Behaviour of In-Situ Synthesized (TiB+TiC)/Ti Composites Prepared by Hot-Pressing

Abstract:

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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.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

877-880

DOI:

10.4028/www.scientific.net/MSF.475-479.877

Citation:

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

Online since:

January 2005

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$35.00

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