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An Experimental Study of Cavity Nucleation During Superplastic Deformation

  • Jiang Xinggang (a1), Cui Jianzhong (a1) and Ma Longxiang (a1)


Cavity nucleation during superplastic deformation of a high strength aluminium alloy has been studied using a high voltage electron microscope and an optical microscope. The results show that cavities nucleation is due only to superplastic deformation and not to pre-existing microvoids which may be introduced during thermomechanical processing. The main reason for cavity nucleation is the high stress concentration at discontinuties in the plane of the grain boundary due to grain boundary sliding.



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[1] Pilling, John and Ridley, Norman, Res Mechanica. 23, 31(1988)
[2] Ridley, N., Suparplastic Forming of structural Alloys. Paton, N.E. and Hamilton, C.H. eds (TMS-AIME publishers warrendale PA, 1982), P.191
[3] Rao, M.K., Mukherjee, A.K., Meterials Science and Engineering, 80, 181 (1986)
[4] Shanyou, Zhou and Liqin, wang, Chin.J.Met. Sci. Technol, 3, 270(1987)
[5] Stowell, M.J., Livesey, D.W. and Ridley, N., Acta metall, 32, 35(1984)
[6] Pilling, J., Mater. Sci. Tech. 1, 461(1986)
[7] Chokshi, A.H. and Mukherjee, A.K., Acta metall. 37, 3007(1989)
[8] Suery, M., in Superplasticity, Baudelet, B. and Suery, M.., eds, (Paris, Centre National de Recherche Scientifique, 1985), ch.9
[9] Xinggang, Jiang, Jianzhong, Cui, Longxiang, Ma, to be published in Materials Science Progress (in Chinese) (1990)
[10] Page, R., Weertman, J.R., Acta Metall. 29, 527(1981)
[11] Bampton, C.C. and Edington, J.W., Metall Trans, 13A, 1721(1982)
[12] Hamilton, C.H., Bampton, Cliff C., Superplastic Forming of Structural Alloys. Paton, Neil E. and Hamilton, C.H. eds, (The Metallurgical Society of AIME, Warrendale, PA, 1982), P173
[13] chokshi, A.H. and Mukherjee, A.K., Superplasticity and Superplastic Forming, Hamilton, C.H. and Paton, N.E. eds. The Minerals, Metals & Materials Society, 1988) P149
[14] Lin, Z-R, Chokshi, A.H. and Langdon, T.G., J.Mater. Sci. 23, 2712(1988)
[15] Stowell, M.J., Metal Sci, 17, 1(1983)


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