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

Abstract:

Article Preview

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

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

Export:

Price:

$38.00

[1] M.H. Loretto and D.G. Konitzer: Metall. Trans., 1990, 21A, 1579.

[2] S.K. Choi, M. Chandrasekharan, and M.H. Brabers: Mater. Sci., 1990, 25, (1957).

[3] S. Rangarajan, P.B. Aswath, W.O. Soboyejo. Scripta. Mater., 1996, 35, 239.

[4] H. Hofmann, G. Frommeyer and C. Derder: Mater. Sci. Eng,. 1998, A245, 127.

[5] S.C. Tjong and Z.Y. Ma: Mater. Sci. Eng. R-Reports,. 2000, 29, 3.

[6] H.T. Tsang, C.G. Chao and C.Y. Ma: Scripta Mater,. 1997, 37, 1359.

[7] T. Saito, H. Takamiya and T. Turuta: Mater. Sci. Eng,. 1998, A243, 273.

[8] A.R.C. Westwood: Metall. Trans,. 1998, 19A, 749.

[9] S. Ranganath, M. Vijavakumar and J. Subrahman: Mater. Sci. Eng,. 1992, A149, 253.