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Proceedings Paper

Thermally activated superdislocation transformations in DO19 ordered alloys
Author(s): Ludmila I. Yakovenkova; Lidia E. Karkina
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Paper Abstract

Blocking of 2c+a superdislocation when part of c+a/2 superpartial dislocation go to the cross slip plane was considered within the context of the isotropic theory of elasticity in Ti3Al single crystals. The 'roof'-type dislocation barriers formed as a result of resplitting of 1/6< vector 1 vector 1 26> superdislocations of the edge and screw orientations from the pyramid planes of the I and II kinds to their cross-slip planes were shown to be energetically favorable. The activation energy of formation of 'roof'-type barriers on 2c+a superdislocations was calculated.

Paper Details

Date Published: 5 May 1999
PDF: 5 pages
Proc. SPIE 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (5 May 1999); doi: 10.1117/12.347415
Show Author Affiliations
Ludmila I. Yakovenkova, Institute of Metal Physics (Russia)
Lidia E. Karkina, Institute of Metal Physics (Russia)


Published in SPIE Proceedings Vol. 3687:
International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

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