Effect of TiC Content on the Microstructure and Mechanical Properties of Ti₃AlC₂/Al₂O₃ In Situ Composites Synthesized by Hot Pressing

Abstract:

The Ti₃AlC₂/Al₂O₃ in situ composites were successfully synthesized from the system of Ti-TiC-Al-TiO₂ by reactive hot pressing at 1350 °C. The effect of TiC content on the phase composition, microstructure and mechanical properties were investigated in detail. The results indicate that the fabricated products possess the highest purity as the TiC contents reduce to 90 % of its theoretical content. This deviation is mainly attributed to the decomposition of Ti₃AlC₂ and vaporization of Al at high temperatures. The effect of TiC content on the fracture toughness, flexural strength, Vickers hardness of Ti₃AlC₂/Al₂O₃ composites was also discussed in detail.

• Periodical: Materials Science Forum (Volume 724)
• Pages: 278-281
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.724.278
• Online since: June 2012
• Authors: Lan Ye, Jian Feng Zhu
• Keywords: Al₂O₃, In Situ Reaction, Mechanical Property, Microstructure, Ti₃AlC₂

References

[1] N.V. Tzenov, M.W. Barsoum: J. Am. Ceram. Soc. Vol. 83 (2000), p.825.

[2] X.H. Wang, Y.C. Zhou: Acta Mater. Vol. 50 (2002), p.3141.

[2] X.P. Lu, Y.C. Zhou: Int. J Appl. Ceram. Tec. Vol. 7 (2010), p.744.

[3] Z.B. Ge, K.X. Chen and J.M. Guo et al.: J. Eur. Ceram. Soc. Vol. 23 (2003), p.567.

[4] Y. Luo, W. Pan and S. Li et al.: Mater. Lett. Vol. 57 (2003), p.2509.

[5] Z.J. Lin, M.J. Zhuo and Y.C. Zhou et al.: Acta Mater. Vol. 54 (2006), p.1009.

[6] Z.J. Lin, M.S. Li and J.Y. Wang et al. : Scr. Mater. Vol. 58 (2008), p.29.

[7] J.X. Chen and Y.C. Zhou: Scripta Mater. Vol. 50 (2004), p.897.

[8] J.X. Chen, J.L. Li and Y.C. Zhou: J. Mater. Sci. Technol. Vol. 22 (2006), p.455.

[9] J.X. Chen, M.Y. Liu, Y.W. Bao and Y.C. Zhou: Int. J. Mater. Res. Vol. 8 (2006), p.1115.

[10] C. L . Yeh, C.W. Kuo and Y.C. Chu: J. Alloys Compd. Vol. 494 (2010), p.132.

[11] J.X. Chen, Y.C. Zhou and H.B. Zhang et al. : Mater. Chem. Phys. Vol. 104 (2007), p.109.