|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High Entropy Alloys IV
||Short-range Disorder and Long-range Order Transitions of a High-entropy Alloy Subjected to Deformation at Different Temperatures
||E-Wen Huang, Jien-Wei Yeh
|On-Site Speaker (Planned)
An equal molar CoCrFeMnNi high entropy alloy system performs good ductility from room temperature up to 700 degree C. It is found the alloy is in a single face-centered-cubic phase. In-situ neutron-diffraction measurements were applied to reveal the ensemble-average diffraction evolution of the high entropy alloy. Unlike the traditional alloys, a reverse temperature effect is found from the investigated CoCrFeMnNi high entropy alloy system from room temperature to 600 degree C. We analyzed the lattice-strain and peak-width evolution subjected to different environmental temperatures of different hkl planes. We also applied elastic-viscoplastic self-consistent (EVPSC) modeling to fit the bulk and lattice-strain evolution. A possible mechanism will be presented to reason the observed reverse temperature effect.
||Planned: A print-only volume