Precise Calibration of Displacement Vector Map during Superplastic Deformation in Tetragonal Zirconia Polycrystal

Abstract:

In previous papers, the present authors observed grain motion in tetragonal zirconia polycrystal during superplastic deformation, and showed the displacement vector map of 748 grains. The map had an interesting feature such as transient domain structure. However, the authors did not pay much attention to the measurement error at that time. In this paper, the influence of measurement error on the map was quantitatively investigated. After precise calibration, it was revealed that measurement error did not have much influence on the feature, and statistics of grain motion was discussed on the calibrated map.

• Periodical: Materials Science Forum (Volume 735)
• Pages: 101-108
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.735.101
• Online since: December 2012
• Authors: Kouichi Yasuda, Taku Okamoto
• Keywords: Displacement Vector, Grain Motion, Tetragonal Zirconia Polycrystal

References

[1] R.Duclos, J.Crampon and B.Amana, Structural and topological study of superplasticity in zirconia polycrystals, Acta Metallurgica 37(1989) 877-833.

DOI: 10.1016/0001-6160(89)90014-x

[2] T.Rouxel, F.Wakai and K.Izaki, Tensile ductility of superplastic Al2O3-Y2O3-Si3N4/SiC composites, Journal of the American Ceramic Society 75 (1992) 2363-2372

DOI: 10.1111/j.1151-2916.1992.tb05586.x

[3] K.Morita, B.N. Kim, K.Hiraga and Y.Sakka, A threshold stress for the superplastic deformation in Y2O3-stabilized tetragonal ZrO2, Materials Science and Engineering A, 387-389 (2004) 655-658.

DOI: 10.1016/j.msea.2004.01.141

[4] E.Zapata-Solvas, D.Gomez-Garcia, C.Garcia-Ganan and A.Dominguez-Rodriguez, high temperature creep behavior of 4mol% yttria tetragonal zirconia polycrystals (4-YTZP) with grain sizes between 0.38 and 1.15μm, Journal of the European Ceramic Society 27 (2007) 3325-3329.

DOI: 10.1016/j.jeurceramsoc.2007.02.183

[5] M.F. Ashby and R.A. Verral, Diffusion-accommodated flow and superplasticity, Acta Metallurgica, 21 (1973) 149-163.

DOI: 10.1016/0001-6160(73)90057-6

[6] K.Yasuda, T.Okamoto, T.Shiota and Y.Matsuo, Recombinant domain movement mechanism in superplastic deformation of TZP ceramics, Materials Science and Engineering, A 418 (2006) 115-119.

DOI: 10.1016/j.msea.2005.11.034

[7] K.Yasuda, T.Okamoto, T.Shiota, Kinematical analysis of 748 grains in TZP ceramics during superplastic deformation, Journal of Solid Mechanics and Materials Engineering, 2 (2008) 1497-1507.

DOI: 10.1299/jmmp.2.1497

[8] T.Okamoto, K.Yasuda and T.Shiota, grain motion statistics of polycrystalline zirconia during superplastic deformation, Scripta Materialia, 64 (2011) 253-255.

DOI: 10.1016/j.scriptamat.2010.10.011

[9] T.Okamoto, K.Yasuda and T.Shiota, Estimation theory for random force exerted on grains during superplastic deformation of ceramics, IOP Conf.Series: Materials Science and Engineering, 18 (2011) 202007.

DOI: 10.1088/1757-899x/18/20/202007