Superplastic Forming of Oxide Ceramic Composite

Guo Qing Chen; Yu Fei Zu; Jun Ting Luo; Xue Song Fu; Wen Long Zhou

doi:10.4028/www.scientific.net/KEM.512-515.407

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Superplastic Forming of Oxide Ceramic Composite

Superplastic Forming of Oxide Ceramic Composite

Abstract:

The paper mainly focused on the two issues that restricted the practical application of superplastic ceramics, which were the low strain rate in superplastic forming as well as resulted severely cavitation in deformed materials. The alumina-based composites Al₂O₃-ZrO₂ (3Y) and Al₂O₃-30mol%ZrO₂(3Y)-30mol%MgAl₂O₄ (AZ30S30) were selected as research materials. The nano-sized composite powders were synthesized by heating of ethanol-aqueous salt solutions method. The superplastic forming tests under the compressive stress state were carried out to evaluate the superplastic formability of the as-sintered materials. The results demonstrate that the following conditions are the essentials for attaining high-strain-rate superplastic forming in alumina based ceramic composites: reduction in the initial grain size by second phase dispersion and insurance of a homogeneous microstructure, enhanced diffusivity by co-doped certain elements, suppressed dynamic grain growth in deformation, as well as provide new rate-controlling accommodation process in superplastic forming. The results also indicate during the superplastic forming the cavitation damage was eliminated because of compression stress state, which ensured the mechanical properties after deformation. Therefore, the postdeformation mechanical properties after superplastic forming were enhanced in some extent.

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Key Engineering Materials (Volumes 512-515)

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407-410

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https://doi.org/10.4028/www.scientific.net/KEM.512-515.407

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June 2012

Authors:

Guo Qing Chen, Yu Fei Zu, Jun Ting Luo, Xue Song Fu, Wen Long Zhou

Keywords:

Mechanical Property, Oxide Ceramic Composite, Superplastic Forming

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References

[1] F. Wakai, S. Sakaguchi, and Y. Matsuno, Superplasticity of yttria-stabilized tetragonal ZrO2 polycrystals, Adv. Ceram. 1 (1986) 259-263.

DOI: 10.1111/j.1551-2916.1986.tb00026.x

Google Scholar

[2] F. Wakai, N. Kondo and Y. Shinoda, Ceramics superplasticity, Curr. Opin. Solid. St. M. 4 (1999) 461.

Google Scholar

[3] K. Hiraga, B. N. Kim, K Morita, et al., High-strain-rate superplasticity in oxide ceramics, Sci. Technol. Adv. Mater. 8 (2007) 578-587.

Google Scholar

[4] K. Morita, K. Hiraga, and Y. Sakka, High-strain-rate superplasticity inY2O3-stabilized tetragonal ZrO2 dispersed with 30 vol% MgAl2O4 spinel, J. Am. Ceram. Soc. 85[7] (2002) 1900-1902.

DOI: 10.1111/j.1151-2916.2002.tb00377.x

Google Scholar

[5] B. N. Kim, K. Hiraga, K. Morita and Y. Sakka, A high-strain-rate superplastic ceramic, Nature. 413 (2001) 288.

DOI: 10.1038/35095025

Google Scholar

[6] G. Q. Chen, K. F. Zhang, G. F. Wang and L. Zhang, Preparation and characterization of nano-sized Al2O3/ZrO2powders, Mater. Sci. Technol. 12[1] (2004) 20-23. (in Chinese)

Google Scholar

[7] G. Q. Chen, K. F. Zhang, G. F. Wang and W. B. Han, The superplastic deep drawing of a fine-grained alumina?zirconia ceramic composite and its cavitation behavior, Ceram. Int. 30[8] (2004) 2157-2162.

DOI: 10.1016/j.ceramint.2003.12.002

Google Scholar

[8] G. Q. Chen and K. F. Zhang, Superplastic extrusion of Al2O3-YTZ nanocomposite and its deformation mechanism, Materials Science Forum. 475-479 (2005) 2973-2976.

DOI: 10.4028/www.scientific.net/msf.475-479.2973

Google Scholar

[9] G.Q. Chen, S.H. Sui, X.D. Wang and W. B. Han, Effect of superplastic deformation on the properties of zirconia dispersed alumina nanocomposite, Mater. Sci. Forum. 551-552 (2007) 527-532.

DOI: 10.4028/www.scientific.net/msf.551-552.527

Google Scholar

[10] S. Hayashi, K. Watanabl, M. Imita and J. Goto, Superplastic forming of ZrO2/Al2O3 composite, Key Engineering Materials. 159-160 (1999) 181-186.

Google Scholar

[11] J. Wittenauer, Superplastic alumina - 20% zirconia, Mater. Sci. Forum. 243-245 (1997) 417-424.

DOI: 10.4028/www.scientific.net/msf.243-245.417

Google Scholar

[12] J. M. Calderon-Moreno and M. Schehl, Microstructure after superplastic creep of alumina-zirconia composites prepared by powder alcoxide mixtures, J. Euro. Ceram. Soc. 24 (2004) 393-397.

DOI: 10.1016/s0955-2219(03)00216-4

Google Scholar

[13] G.Q. Chen, Y.F. Zu, J. Xie and X.S. Fu, Fabrication and superplastic deformation of Al2O3/YSZ/MgAl2O4 composite ceramic, Advanced Materials Research. 105-106 (2010) 188-191.

DOI: 10.4028/www.scientific.net/amr.105-106.188

Google Scholar