HREM examination of [101] screw dislocations in Ni3Al
- 1 August 1989
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 60 (2), 45-50
- https://doi.org/10.1080/09500838908206434
Abstract
The dissociation of [101] screw dislocations in Ni3Al has been examined using high-resolution electron microscopy. [101] superdislocations are found to be dissociated into (a/2)[101] superpartial dislocations on the (010) cube cross-slip plane. These superpartials in turn dissociate into complex stacking faults on the (111) or (111) which are bounded by Shockley partials in agreement with theoretical predictions. The degree of antiphase boundary spreading on (010) was found to increase with deformation temperature while the superpartial core dissociations remain unchanged.Keywords
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