Disclination grain boundary model with plastic deformation by dislocations

A disclination dipole wall model of grain boundaries incorporating a dislocation emission mechanism has been developed. Uniform and non-uniform disclination spacings have been treated, and the complete stress field equations have been solved for the uniform case. Two models of dislocation emission f...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1995, Vol.190 (1), p.1-7
Hauptverfasser:	Hurtado, J.A., Elliott, B.R., Shodja, H.M., Gorelikov, D.V., Campbell, C.E., Lippard, H.E., Isabell, T.C., Weertman, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Deformation Deformation and plasticity (including yield, ductility, and superplasticity) Disclination Dislocation Exact sciences and technology Grain boundaries Mechanical and acoustical properties of condensed matter Mechanical properties of solids Physics Plasticity
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Zusammenfassung:	A disclination dipole wall model of grain boundaries incorporating a dislocation emission mechanism has been developed. Uniform and non-uniform disclination spacings have been treated, and the complete stress field equations have been solved for the uniform case. Two models of dislocation emission from the disclination dipoles are considered as plastic deformation mechanisms. A stable grain boundary with limited plastic deformation potential is described.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/0921-5093(94)09592-K