| Titre : | Thermal stability of nanocomposite metals : In situ observation of anomalous residual stress relaxation during annealing under synchrotron radiation (2011) |
| Auteurs : | J. B. Dubois, Auteur ; L. Thilly, Auteur ; P.O. Renault, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 19, Novembre 2010) |
| Article en page(s) : | pp. 6504–6512 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Nanostructures In situ annealing Residual stresses X-ray diffraction Synchrotron |
| Résumé : | The thermal stability of nanocomposite metals (a nanostructured copper matrix embedding niobium nanotubes) is investigated via time-resolved in situ annealing under synchrotron high-energy X-rays. The diffraction peak profile analysis demonstrates that internal-stress relaxation begins in the Nb nanotubes at a temperature far below the bulk recrystallization temperature and follows size-specific regimes originating from a proximity effect with the nanostructured Cu matrix: the increased Cu–Nb interface surface disrupts internal-stress relaxation processes, confirming the larger thermal resistance of nanostructured materials. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645410005276 |
