On the existence of superlattice intrinsic stacking fault-superlattice extrinsic stacking fault coupled pairs in an L1(2) alloy

Authors
Dirras, GF Douin, J
Citation
Gf. Dirras et J. Douin, On the existence of superlattice intrinsic stacking fault-superlattice extrinsic stacking fault coupled pairs in an L1(2) alloy, PHIL MAG A, 81(2), 2001, pp. 467-478
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS ANDMECHANICAL PROPERTIES
ISSN journal
13642804 → ACNP
Volume
81
Issue
2
Year of publication
2001
Pages
467 - 478
Database
ISI
SICI code
1364-2804(200102)81:2<467:OTEOSI>2.0.ZU;2-9
Abstract
Double-faulted ribbons of stacking faults on the same (111) plane have been found in a L1(2) pseudobinary Ni3Ge-Fe3Ge compound. They stem from the int eraction of coplanar (110) superdislocations giving rise to (112) dislocati ons, which subsequently dissociate into three identical :(112) Shockley par tials. It is shown that, provided that a larger core relaxation of the 1/3 (112) partial dislocations is assumed, the threefold dissociated configurat ion has a lower energy than the antiphase-boundary dissociated configuratio n.