|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Thermal and Mechanical Stability of Nanocrystalline Materials
||Thermal Stability of Nanocomposite Metals: In Situ Observation of Anomalous Residual Stresses Relaxation during Annealing Under Synchrotron Radiation
||Ludovic Thilly, Pierre-Olivier Renault, Florence Lecouturier
|On-Site Speaker (Planned)
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, leading to larger thermal resistance [Acta Mat., 58 (2010), p6504; Adv. Eng. Mat., 14-11 (2012), p998].
||Planned: Supplemental Proceedings volume