|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||How to Play with Grain Size and Texture to Tune Mechanical Properties of Architectured Materials: The Case of Cu-Nb (Nano)Composite Wires
||Ludovic Thilly, Pierre-Olivier Renault, Florence Lecouturier
|On-Site Speaker (Planned)
We study architectured metallic wires fabricated by Severe Plastic Deformation (Accumulative Drawing and Bundling), consisting of a multiscale copper matrix embedding 85<SUP>n</SUP> (n=2 or 3) continuous niobium filaments. After assessing the macroscopic mechanical tensile properties of the wires, their local texture (in multiscale Cu channels and Nb filaments) is characterized using Electron Back Scatter Diffraction (EBSD). Then, the microscopic mechanical behavior of each main grain families in the two phases is studied via in-situ tensile test combined with neutron diffraction. From this, we correlate the EBSD and in-situ neutron diffraction results to evaluate the impact of size and architecture on the microscopic and macroscopic mechanical properties. The demonstrated synergy between microstructure and architecture may thus serve as an additional degree of liberty to tune materials macroscopic mechanical response.
[Acta Mat, 57 (2009), p3157; Acta Mat, 58 (2010), p6504; Adv. Eng. Mat., 14-11 (2012), p998; Acta Mat, submitted].
||Planned: Supplemental Proceedings volume