Thermal stability of nanocomposite metals : In situ observation of anomalous residual stress relaxation during annealing undersynchrotron radiation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Acta Materialia Année : 2010

Thermal stability of nanocomposite metals : In situ observation of anomalous residual stress relaxation during annealing undersynchrotron radiation

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.

Dates et versions

hal-00551839 , version 1 (04-01-2011)

Identifiants

Citer

J.B. Dubois, L. Thilly, P.O. Renault, Florence Lecouturier, And M. Di Michiel. Thermal stability of nanocomposite metals : In situ observation of anomalous residual stress relaxation during annealing undersynchrotron radiation. Acta Materialia, 2010, 58, pp.6504-6512. ⟨10.1016/j.actamat.2010.08.013⟩. ⟨hal-00551839⟩
104 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More