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Bertrand, E., Castany, P., Yang, Y., Menou, E. & Gloriant, T. (2016) Deformation twinning in the full-alpha '' martensitic Ti-25Ta-20Nb shape memory alloy. Acta Mater. 105 94–103.
Added by: Laurent Cournède (2016-03-10 18:36:43) |
| Type de référence: Article DOI: 10.1016/j.actamat.2015.12.001 Numéro d'identification (ISBN etc.): 1359-6454 Clé BibTeX: Bertrand2016 Voir tous les détails bibliographiques  |
Catégories: ID2M Mots-clés: alpha '' martensite, beta-titanium alloy, ebsd, mechanical-behavior, microstructure, nb alloy, Shape memory alloy, superelastic ti-24nb-4zr-8sn alloy, ti-24nb-0.5n, ti-alloys, titanium, transformation, Twinning, x-ray-diffraction Créateurs: Bertrand, Castany, Gloriant, Menou, Yang Collection: Acta Mater. |
Consultations : 1/1120
Indice de consultation : 8% Indice de popularité : 2% |
| Résumé |
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Deformation twinning of the Ti-25Ta-20Nb (mass\%) shape memory alloy is characterized using EBSD and TEM. The selfaccommodating alpha '' microstructure is shown to be first deformed using (111)(alpha '') type I and {<} 211 {>}(alpha '') type II reorientation twinning. Plastic deformation occurs further by plastic twinning with a new \{130\}{<} 310 {>}(alpha '') twinning system. Maximum lattice deformation calculation is a relevant parameter to predict the variant of martensite that is favored during the reorientation process. Conversely, Schmid factor analysis can be used to predict the selection of \{130\}{<} 310 {>}(alpha '') twinning variants during deformation. Analogy between \{\vphantom{\}}130){<} 310 {>}(alpha '') and (332){<} 113 {>}(beta) twinning systems is highlighted. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède |