|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Recent Developments in Biological, Structural and Functional Thin Films and Coatings
||Influence of Interfacial Structure on the Phase Stability and Growth Stress in Cu/Nb Multilayered Films
||Qianying Guo, Li Wan, Richard L. Martens, Gregory B. Thompson
|On-Site Speaker (Planned)
As layer thickness were reduced, a series of phase transformation have been noted to occur in Cu/Nb multilayers. Using HRTEM the evolution of the interface from incoherent-to-semicoherent-to-coherent has been characterized and related to the interfacial energy reduction that drives these transformations. These transformations have also been related to their real-time measured intrinsic growth stresses which revealed a notable reduction in the compressive stress with each transformation. When equal thicknesses of < 1 nm where deposited, each layer vitrified due to the positive enthalpy of mixing. These findings will presented in a thermodynamic framework where TEM, atom probe, and stress evolution characterization have been correlated together to provide new insights into the mechanisms of structural stability of crystalline phases at the nanoscale.
||Planned: A print-only volume