title: Reversion of a Parent {130}⟨310⟩_{α^{''}} Martensitic Twinning System at the Origin of {332}⟨113⟩_{β} Twins Observed in Metastable β Titanium Alloys.
abstract: In bcc metastable β 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 β phase totally transforms into α^{''} martensite under stress in a Ti-27Nb (at. %) alloy. {332}⟨113⟩_{β} twins are thus not formed directly in the β phase but are the result of the reversion of {130}⟨310⟩_{α^{''}} parent twins occurring in martensite under stress. The formation of an interfacial twin boundary ω phase is also observed to accommodate strains induced during the phase reversion.
authors.affiliation: INSA de Rennes, UMR CNRS 6226 Institut des Sciences Chimiques de Rennes/Chimie-Métallurgie, 20 avenue des Buttes de Coësmes, 35708 Rennes, France.
authors.forename: P
authors.initials: P
authors.lastname: Castany
authors.affiliation: INSA de Rennes, UMR CNRS 6226 Institut des Sciences Chimiques de Rennes/Chimie-Métallurgie, 20 avenue des Buttes de Coësmes, 35708 Rennes, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Rue Christian Pauc, 44306 Nantes, France.
authors.forename: E
authors.initials: E
authors.lastname: Bertrand
authors.affiliation: INSA de Rennes, UMR CNRS 6226 Institut des Sciences Chimiques de Rennes/Chimie-Métallurgie, 20 avenue des Buttes de Coësmes, 35708 Rennes, France.
authors.forename: T
authors.initials: T
authors.lastname: Gloriant