Abstract
A deformation mechanism map with grain size and stress as variables was constructed for creep in YBa2Cu3O7−xat 850 and 950 °C. Theoretical models of Nabarro-Herring, Coble, and power-law creep were used for the construction. The values of various physical constants for creep of YBa2Cu3O7−x were taken from the literature, or estimated with appropriate assumptions. The constructed map showed that the Nabarro-Herring creep would dominate at high temperatures in the practical range of grain size and stress, and that the power-law creep would occur at large stress (> 1 GPa) and grain size. A review of previous creep studies showed that the map is in close agreement with the experimental results. Discrepancies in the values of stress exponent and activation energy for creep of YBa2Cu3O7−x given in the literature are explained by the use of the constructed map.
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References
M. F. Ashby,Acta Metall. 20 (1972) 887.
F. A. Mohamed andT. G. Langdon,Metall. Trans. 5 (1974) 2339.
M. R. Notis, in “Deformation of Ceramic Materials”, edited by R. C. Bradt and R. E. Tressler (Plenum, New York, 1975) p. 1.
A. W. Stumberg, N. Chen, K. C. Goretta andJ. L. Routbort,J. Appl. Phys. 66 (1989) 2079.
K. C. Goretta, J. L. Routbort, A. C. Biondo, Y. Gao, A. R. Arellano-Lopez andA. Dominguez-Rodriguez,J. Mater. Res. 5 (1990) 2766.
P. E. Reyes-Morel, X. Wu andI.-W. Chen, in “Ceramic Superconductors II”, edited by M. F. Yan (American Ceramic Society, Westerville, Oh, 1988) p. 590.
G. Bussod, A. Pechenik, C. Chu andB. Dunn,J. Am. Ceram. Soc. 72 (1989) 137.
Y. Kodama andF. Wakai, in “Advances in Superconductivity II”, edited by T. Ishiguro and K. Kajimura (Springer, Tokyo, 1989) p. 113.
J. C. Borofka, B. C. Hendrix, A. I. Attarwala andJ. K. Tien,J. Am. Ceram. Soc. 76 (1993) 1011.
N. Chen, S. J. Rothman andJ. L. Routbort,J. Mater. Res. 7 (1992) 2308.
S. Nakahara, S. **, R. C. Sherwood andT. H. Tiefel,Appl. Phys. Lett. 54 (1989) 1926.
T. G. Langdon andF. A. Mohamed,J. Mater. Sci. 11 (1976) 317.
J. Jiang, H. Yin, X. Wang, Y. Sun, F. Zeng andJ. Du,Mater. Sci. Eng. B7 (1990) 227.
G. Mader, H. Meixner andP. Kleinschmidt,J. Appl. Phys. 58 (1985) 702.
I. V. Aleksandrov, A. F. Goncharov andS. M. Stishov,JETP Lett. 47 (1988) 428.
H. Ledbetter andM. Lei,J. Mater. Res. 6 (1991) 2253.
D. Gupta, S. L. Shinde, andR. B. Laibowitz, in “High Temperature Superconducting Compounds II”, edited by S. H. Whang, A. DasGupta, and R. B. Laibowitz (Minerals, Metals and Materials Society, Warrendale, Pa, 1990) p. 377.
J. L. Routbort, S. J. Rothman, N. Chen, J. N. Mundy andJ. E. Baker,Phys. Rev. B. 43 (1991) 5489.
K. N. Tu, N. C. Yeh, S. I. Park andC. C. Tsuei,Ibid. 39 (1989) 304.
J. L. Tallon andM. P. Staines,J. Appl. Phys. 68 (1990) 3998.
J. Yun, M. P. Harmer andY. T. Chou,Script. Metall. Mater. 29 (1993) 267.
J. Yun, Ph.D. dissertation, Lehigh University, Bethlehm, PA (1994).
I. Kaur andW. Gust, in “Handbook of Grain and Interphase Boundary Diffusion Data”, Vols 1 and 2 (Ziegler Press, Stuttgart, 1989).
A. H. Chokshi andT. G. Langdon,Mater. Sci. Technol. 7 (1991) 577.
R. L. Stocker andM. F. Ashby,Script. Metall. 7 (1973) 115.
P. G. Shewmon, “Diffusion in Solids” (McGraw-Hill, New York, 1963) Chs. 6–2.
M. J. Kramer, L. S. Chumbley andR. W. McCallum,J. Mater. Sci. 25 (1990) 1978.
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Yun, J., Harmer, M.P. & Chou, Y.T. Deformation mechanism map for creep in YBa2Cu3O7−x . J Mater Sci 30, 4906–4911 (1995). https://doi.org/10.1007/BF01154503
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DOI: https://doi.org/10.1007/BF01154503