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Compressive Behavior of Extruded SiCw/AZ91 at Temperatures close to and above the Solidus of the Matrix Alloy

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Abstract:

Compressive deformation behaviors of extruded SiCw/AZ91 were investigated in Gleeble-1500 thermal simulator at temperatures from 743 K to 783 K and strain rates from 6.4×10-2 s-1 to 1.0×101s-1. Results showed that high strain rate sensitivity (~0.5) occurred during compression; deformation activation energy normalized by threshold stress was higher than the lattice self-diffusion activation energy of magnesium. Dynamic recovery (DRV) and dynamic recrystallization (DRX) took place during compression, which refined the grains. The increase of deformation energy was attributed to non-basal planes slip and climbing of dislocations and also the presence of liquid phase.

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Periodical:

Materials Science Forum (Volumes 488-489)

Pages:

827-830

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.488-489.827

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Online since:

July 2005

Authors:

Wei Min Gan, Ming Yi Zheng, S.B. Li, Kun Wu

Keywords:

Compressive Deformation, Dynamic Recrystallization (DRX), SiCw/AZ91

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] A. Luo: Metall. Mater. Trans A. Vol. 26A (1995), p.2445.

Google Scholar

[2] M. Y. Zheng, K. Wu and C. K. Yao: Mater. Sci. Eng. Vol. A318 (2001), p.50.

Google Scholar

[3] T. G. Nieh, A. J. Schwartz, J. Wadsworth: Mater. Sci. Eng. Vol. A208 (1996), p.30.

Google Scholar

[4] A. Galiyev, O. Sitdikov, R. Kaibyshev: Mater. Trans. Vol. 44 (2003), p.426.

Google Scholar

[5] Y. Chino, M. Kobata, H. Iwasaki, M. Mubuchi: Acta Mater. Vol. 51 (2003), p.3309.

Google Scholar

[6] H. Watanabe: Doctoral thesis at Osaka Prefecture Univisity, 2002, p.42.

Google Scholar

[7] R. S. Mishra, T. R. Bieler, A. K. Mukherjee: Acta Mater. Vol. 45 (1996), p.561.

Google Scholar

[8] M. Mabuchi, K. Higashi: Scripta Mayer. Vol. 34 (1996), p.1893.

Google Scholar

[9] J. Koike, T. Kobayashi, T. Mukai, H. Watanabe, M. Suzuki, K. Maruyama, K. Higashi: Acta Mater. Vol. 51 (2003), p. (2055).

Google Scholar

[10] M. Regev, E. Aghion, A. Rosen, M. Bamberger: Mater. Sci. & Eng. Vol. A257 (1998), p.349.

Google Scholar

[11] Y. C. Yoo, J. S. Jeon, H. I. Lee: Composite Sci. & Tech. Vol. 57 (1997).

Google Scholar