Superplasticity of Nanocrystalline ZrO2-Spinel Composite


Article Preview

The effect of nanocrystalization on superplastic flow was examined in ZrO2-30vol%spinel composite. The nanocrystalization can increase the strain rate by one order of magnitude or lower the deforming temperature by about 100 K. Irrespective of the lowered flow stress, however, the tensile elongation to failure of nanocrystalline composite is lower than that of submicrom-grain composite. The limited tensile elongation in nanocrystalline composite can be ascribed mainly to accelerating cavity damage accumulation.



Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim




K. Morita et al., "Superplasticity of Nanocrystalline ZrO2-Spinel Composite", Key Engineering Materials, Vols. 345-346, pp. 573-576, 2007

Online since:

August 2007




[1] F. Wakai. S. Sakaguchi, Y. Matsuno, Adv. Ceram. Mater., 1 (1986) 259.

[2] T. G. Nieh, J. Wadswort, O. D. Sherby, Superplasticity in Metals and Ceramics. Cambridge University Press, United Kingdom, (1997).

[3] B. -N. Kim, K. Hiraga, K. Morita, Y. Sakka, Nature 413 (2001) 288.

[4] B. -N. Kim, K. Hiraga, K. Morita, Y. Sakka, T. Yamada, Scripta Mater. 47 (2002) 775.

[5] K. Morita, K. Hiraga, Y. Sakka, J. Am. Ceram. Soc. 85 (2002) (1900).

[6] K. Morita, K. Hiraga, B. -N. Kim, Y. Sakka, Mater. Trans. 45 (2004) (2073).

[7] K. Morita, K. Hiraga, B. -N. Kim, H. Yoshida, Y. Sakka, Scripta Mater. 53 (2005) 1007.

[8] J.C. Wurst, J.A. Nelson, J. Am. Ceram. Soc. 55 (1972) 109.

[9] K. Morita, K. Hiraga, B. -N. Kim, H. Yoshida, to be submitted.

[10] W.J. Kim, J. Wadsworth, O.D. Sherby, Acta Mater., 39 (1991) 199.

[11] K. Morita, K. Hiraga, B. -N. Kim, to be submitted.

[12] F. Gutiérrez-Mora, A. Domínguez-Rodoríguez, M. Jiménez-Melendo, J. Euro. Ceram. Soc. 22 (2002) 2615.

[13] K. Morita, K. Hiraga, Acta Mater. 50 (2002) 1075.

[14] M. Jiménez-Melendo, A. Domínguez-Rodoríguez, A. Bravo-León, J. Am. Ceram. Soc., 81 (1998) 2761.

[15] K. Hiraga, K. Nakano, T.S. Suzuki, and Y. Sakka, J. Am. Ceram. Soc., 85 (2002).

Fetching data from Crossref.
This may take some time to load.