Internal stresses in dislocation subgrain structures

作者: R. Sedláček , W. Blum

DOI: 10.1016/S0927-0256(98)00055-X

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摘要: Long-range internal stresses in dislocation subgrain structures are proposed to be a consequence of plastic incompatibility caused by dislocations bowing between boundaries which act as obstacles glide. Assuming elliptically bowed on two slip systems, plane strain model the incompatible deformation is formulated. The computed using numerical method based Fast Fourier Transform (FFT). Considerable arise especially with inclined respect glide planes.

参考文章(16)
William D Nix, Theory of Dislocations ,(1968)
M.A. Morris, J.L. Martin, Evolution of internal stresses and substructure during creep at intermediate temperatures Acta Metallurgica. ,vol. 32, pp. 549- 561 ,(1984) , 10.1016/0001-6160(84)90066-X
W. Blum, S. Vogler, M. Biberger, A.K. Mukherjee, Stress dependence of the creep rate at constant dislocation structure Materials Science and Engineering: A. ,vol. 112, pp. 93- 106 ,(1989) , 10.1016/0921-5093(89)90348-1
R. Sedláček, M. Hecker, Stress fields of tilted dislocation walls Computational Materials Science. ,vol. 11, pp. 270- 276 ,(1998) , 10.1016/S0927-0256(98)00011-1
R. Sedláček, A model of reversible cyclic deformation of a dislocation vein structure Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. pp. 643- 645 ,(1997) , 10.1016/S0921-5093(97)00356-0
A Borbély, T Ungar, HJ Maier, H Renner, S Straub, W Blum, Long-range internal stresses in steady-state subgrain structures Scripta Metallurgica et Materialia. ,vol. 29, pp. 7- 12 ,(1993) , 10.1016/0956-716X(93)90245-N
R. Sedlacek, Viscous glide of a curved dislocation Philosophical Magazine Letters. ,vol. 76, pp. 275- 280 ,(1997) , 10.1080/095008397179020