Reappraisal of grain boundary diffusion creep equations for nanocrystalline materials
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Abstract
Grain boundary diffusion creep equations developed previously for nanocrystalline materials were reappraised in order to elicit further understanding of plastic deformation of these materials in relation to grain boundary diffusion. From a mechanistic viewpoint, the strain rate is inversely proportional to the second power of the grain size when the grain size is refined to the same order of the grain boundary thickness. The presence of the threshold stress appears to be inherent, as a relatively large volume fraction of the grain boundary region is associated with irregularities.
Keywords
nanocrystalline materials grain boundary diffusion creep grain size threshold stressPreview
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References
- 1.A. H. Chokshi, A. Rosen, J. Karch, and H. Gleiter,Scripta metall. 23, 1679 (1989).CrossRefGoogle Scholar
- 2.G. Palumbo, U. Erb, and K. Aust,Scripta metall. mater. 24, 2347 (1990).CrossRefGoogle Scholar
- 3.H. Chang, H. Höfler, C. Altstetter, and R. Averbach,Scripta. metall. mater. 25, 1161 (1991).CrossRefGoogle Scholar
- 4.R. W. Siegel and G. E. Fougere,Nanostruct. Mater. 6, 205 (1995).CrossRefGoogle Scholar
- 5.H. Han and K. A. Padmanabhan,Phil. Mag. B. 76, 559 (1997).CrossRefGoogle Scholar
- 6.R. A. Masumura, P. M. Hazzeldine, and C. S. Pande,Acta mater.,46, 4527 (1998).CrossRefGoogle Scholar
- 7.H. van Swygenhoven, M. Spaczer, and A. Caro,Acta mater.,47, 3117 (1999).CrossRefGoogle Scholar
- 8.F. A. Mohamed and Y. Li,Mater. Sci. Eng. A 298, 1 (2001).CrossRefGoogle Scholar
- 9.R. L. Coble,J. Appl. Phys. 34, 1679 (1963).CrossRefADSGoogle Scholar
- 10.J. R. Spingarn and W. D. Nix,Acta metall. 26, 1389 (1978).CrossRefGoogle Scholar
- 11.H. S. Kim, Y. Estrin, and M. B. Bush,Acta mater. 48, 493 (2000).CrossRefGoogle Scholar
- 12.V. Yamakov, D. Wolf, S. R. Pillpot, and H. Gleiter,Acta mater. 50, 61 (2002).CrossRefGoogle Scholar
- 13.Y. Ogino,Scripta mater. 43, 149 (2000).CrossRefGoogle Scholar
- 14.H. S. Kim,Scripta mater. 39, 1057 (1998).CrossRefGoogle Scholar
- 15.B. Cai, Q. P. Kong, L. Lu, and K. Lu,Scripta mater. 41, 755 (1999).CrossRefGoogle Scholar
- 16.B. Cai, Q. P. Kong, L. Lu, and K. Lu,Mater. Sci. Eng. A 286, 188 (2000).CrossRefGoogle Scholar
- 17.B. Cai, Q. P. Kong, P. Cui, L. Lu, and K. Lu,Scripta mater. 45, 1407 (2001).CrossRefGoogle Scholar
- 18.F. Gutiérrez-Mora, A. Dominguez-Rodriguez, M. Jiménez-Melendo, R. Chaim, and M. Hefetz,Scripta mater. 11, 531 (1999).Google Scholar
- 19.G. W. Nieman, J. R. Weertman, and R. W. Siegel,J. Mater. Sci. 6, 1012 (1991).Google Scholar
- 20.P. G. Sanders, M. Rittner, E. Kiedaisch, J. R. Weertman, H. Kung, and Y. C. Lu,Nanostruct. Mater. 9, 433 (1997).CrossRefGoogle Scholar
- 21.G. W. Nieman, J. R. Weertman, and R. W. Siegel,Scripta metall. mater. 24, 145 (1990).CrossRefGoogle Scholar
- 22.L. E. Murr,Interfacial Phenomena in Metals and Alloys, p. 131, Addison-Wesley, London (1975).Google Scholar
- 23.W. C. Oliver and W. D. Nix,Acta metall. 30, 1335 (1982).CrossRefGoogle Scholar
- 24.F. A. Mohamed, K.-T. Park, and E. J. Lavernia,Mater. Sci. Eng. A 150, 21 (1992).CrossRefGoogle Scholar
- 25.P. K. Chaudhury, K.-T. Park, and F. A. Mohamed,Metall. Mater. Trans. A 25, 2391 (1994).CrossRefGoogle Scholar
- 26.K.-T. Park, E. J. Lavernia, and F. A. Mohamed,Acta metall. mater. 42, 667 (1994).CrossRefGoogle Scholar
- 27.D. H. Shin, K.-T. Park, and E. J. Lavernia,Mater. Sci. Eng. A 201, 118 (1995).CrossRefGoogle Scholar
- 28.E. Arzt, M. F. Ashby, and R. A. Verrall,Acta metall. 31, 1977 (1983).CrossRefGoogle Scholar
- 29.H. Gleiter,Acta metall. 27, 187 (1979).CrossRefGoogle Scholar
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