Castany, P., Yang, Y., Bertrand, E. & Gloriant, T. (2016) Reversion of a Parent 130< 310 >(alpha '') Martensitic Twinning System at the Origin of 332< 113 >(beta) Twins Observed in Metastable beta Titanium Alloys. Phys. Rev. Lett. 117 245501.
Added by: Richard Baschera (2017-02-02 13:37:30) Last edited by: Richard Baschera (2017-02-02 13:38:10) |
Type de référence: Article DOI: 10.1103/PhysRevLett.117.245501 Numéro d'identification (ISBN etc.): 0031-9007 Clé BibTeX: Castany2016 Voir tous les détails bibliographiques |
Catégories: ID2M Mots-clés: deformation, gum metal, mechanical-properties, omega-phase-transformation, Stability, superelasticity, ti-24nb-0.5n, ti-alloys, x-ray-diffraction, youngs modulus Créateurs: Bertrand, Castany, Gloriant, Yang Collection: Phys. Rev. Lett. |
Consultations : 1/532
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Résumé |
In bcc metastable beta titanium alloys, and particularly in superelastic alloys, a unique {332}{<} 113 {>} twinning system occurs during plastic deformation. However, in situ synchrotron x-ray diffraction during a tensile test shows that the beta phase totally transforms into alpha '' martensite under stress in a Ti-27Nb (at. %) lalloy. {332}{<} 113 {>}(beta) twins are thus not formed directly in the beta phase but are the result of the reversion of {130}{<} 310 {>}(alpha '') parent twins occurring in martensite under stress. The formation of an interfacial twin boundary. phase is also observed to accommodate strains induced during the phase reversion.
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