Thermally activated superdislocation transformations in DO19 ordered alloys

Ludmila I. Yakovenkova; Lidia E. Karkina

doi:10.1117/12.347415

5 May 1999 Thermally activated superdislocation transformations in DO₁₉ ordered alloys

Ludmila I. Yakovenkova, Lidia E. Karkina

Proceedings Volume 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (1999) https://doi.org/10.1117/12.347415
Event: International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 1998, St. Petersburg, Russian Federation

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.

Citation Download Citation

Ludmila I. Yakovenkova and Lidia E. Karkina "Thermally activated superdislocation transformations in DO₁₉ ordered alloys", Proc. SPIE 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (5 May 1999); https://doi.org/10.1117/12.347415

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