Microstructure and Tensile Properties of In Situ Synthesized (TiB+TiC)/Ti-6Al-4V Composites


Article Preview

In this paper, Ti-6Al-4V matrix composites reinforced with 5% or 10% TiB and TiC were in situ synthesized by common casting and hot-forging technology utilizing the reaction between titanium and B4C. The phase constituents were identified by XRD while transus temperatures were determined by DSC and metallography. The evolution of microstructures was studied by optical microscopy. The effects of reinforcements on the microstructures, tensile properties and fractures at room temperature were discussed. The results show that yield strength and ultimate tensile strength increased significantly while ductility decreased with reinforcements increasing. Fracture type turned to brittle when reinforcements increased.



Main Theme:

Edited by:

Di Zhang, Jingkun Guo and Chi Y. A. Tsao




J. Q. Lu et al., "Microstructure and Tensile Properties of In Situ Synthesized (TiB+TiC)/Ti-6Al-4V Composites", Key Engineering Materials, Vol. 351, pp. 201-207, 2007

Online since:

October 2007




[1] Ranganath S. J: Mater. Sci. Vol. 32 (1997), p.1.

[2] Lu WJ, Zhang D and Zhang XN: Scripta Mater. Vol. 44 (2001), p.1069.

[3] D.G. Konitzer and M.H. Loretto: Acta Metall. Mater. Vol. 37 (1989), p.397.

[4] S. Rangarajan, P.B. Aswath and W.O. Soboyejo: Scr. Metall. Mater. Vol. 35 (1996), p.239.

[5] D. Hill, R. Banerjee and D. Huber, et al.: Scripta Mater. Vol. 52 (2005), p.387.

[6] S. Ranganath and R.S. Mishra: Acta Mater. Vol. 44 (1996), p.927.

[7] Tsang HT, Chao CG and Ma CY: Scripta Mater. Vol. 35 (1996), p.1007.

[8] Man HC, Zhang S, Cheng FT and Yue TM: Scripta Mater. Vol. 44 (2001), p.2801.

[9] S. Ranganath, M. Vijayakumar and J. Subrahmanyam: Mater. Sci. Eng. A Vol. 149 (1992), p.253.

[10] Loretto M H and Konitzer D G.: Metall Mater Trans, Vol. 21(1990), p.1579.

[11] Shang J K and Ritchie R O. Scripta Mater. Vol. 24 (1990), p.1691.

[12] Z.Y. Ma, R.S. Mishra and S.C. Tjong: Acta Mater. Vol. 50 (2002), p.4293.

[13] C.J. Boehlert and C.J. Cowen: Scripta Mater. Vol. 55 (2006), p.465.

[14] S. Gorsse and D.B. Miracle: Acta Mater. Vol. 51 (2003), p.2428.

[15] Lu WJ, Zhang D and Zhang XN, et al.: J. Alloys Compd. Vol. 327 (2001), p.248.

[16] Geng K., Lu WJ and Qin YX., et al.: Mater. Res. Bull. Vol. 39 (2004), p.873.

[17] V.C. Nardone and K. M: Prewo, Scripta Metall. Mater. Vol. 20 (1986), p.43.

[18] H.L. Cox and Br. J.: Appl. Phys. Vol. 3 (1952), p.72.

[19] V.C. Nardone: Scripta. Metall. Mater. Vol. 21 (1987), p.1313.