Microstructure and Mechanical Properties of Nano-Scale Al2O3 Toughened Ti (C,N) Matrix Cermet Tool Materials

Abstract:

Article Preview

Advanced Ti(C, N) matrix cermet tool materials with higher mechanical properties are successfully developed by dispersing nano-scale Al2O3 powder into the micro-scale Ti(C, N) matrix and Ni-Mo bonding phases powder. The effect of the content of nano-scale alumina on the microstructure and mechanical properties of micro-scale Ti(C, N) matrix cermet tool materials are investigated. The research results show that a type of Ti(C, N) matrix cermet tool material has the most optimal flexural strength of 900MPa, Vickers hardness of 17.4GPa and fracture toughness of 9.95MPa.m1/2 when the content of nano-scale alumina is 12% in term of mass. It is found from the microstructure analysis that the main reason of the mechanical properties improvement is the grain fining effect caused by nano-scale Al2O3.

Info:

Periodical:

Materials Science Forum (Volumes 532-533)

Edited by:

Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu

Pages:

37-40

Citation:

C. Z. Huang et al., "Microstructure and Mechanical Properties of Nano-Scale Al2O3 Toughened Ti (C,N) Matrix Cermet Tool Materials ", Materials Science Forum, Vols. 532-533, pp. 37-40, 2006

Online since:

December 2006

Export:

Price:

$38.00

[1] L .D. Zhang: Nano-materials and Nano-structure (Science Press, Beijing 2001).

[2] D. Vollath, D.V. Szabo and J. Haubelt: J. of Eur. Ceram. Soc., Vol. 17 (1997), pp.1317-1324.

[3] K. Niihara: J. Ceram. Soc. Jpn., Vol. 99 (1991), pp.974-982.

[4] L.S. Yan, H.Q. Yu and C.L. Song: Universal Materials Tech., Vol. 1 (2003), pp.6-10.

[5] C.H. Xu, C.Z. Huang and X. Ai: J. of Mater. Eng. and Perf., Vol. 10 (2001), pp.102-107.

[6] S.X. Song, X. Ai, J. Zhao and C.Z. Huang: Mater. Sci. and Eng. A, Vol. 356 (2003), pp.43-47.

[7] F. Mikio, F. Kenji, and F. Akira: Wear, Vol. 102 (1985), pp.195-210.