Temperature effect on strain-induced phase transformation of cobalt
Résumé
Thermal and mechanical effects on the phase transformation of polycrystalline two-phase HCP/FCC cobalt have been studied in coupled and decoupled ways. This experimental work has involved in situ X-ray and neutron diffraction analysis to determine phase proportions under various thermomechanical conditions, those which are not referenced in the litterature. A quantitative analysis is proposed to better understand phase transformation in a cobalt rolled sheet. New experimental results show that the metastable FCC retained phase can be transformed into HCP phase by a mechanical loading. In accordance with the theory and the literature, the prominent phase (HCP) can subsequently be transformed with an increase of temperature above 743 K.
Domaines
Matériaux| Origine | Fichiers produits par l'(les) auteur(s) |
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