|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Deformation Mechanism of Transformation-induced Plasticity-assisted, Dual-phase High-entropy Alloy (TRIP-DP-HEA) by In-situ Neutron Diffraction
||Sichao Fu, Hongbin Bei, Ke An
|On-Site Speaker (Planned)
The newly developed TRIP-DP-HEA possesses high strength and ductility at room temperature. While the FCC to HCP phase transformation and twinning in the HCP during deformation has been observed as dominant at different strains by interrupted microscopy characterization, the phase specific micromechanics deformation evolution and their interactions are rather complicated, and not resolvable easily by ex-situ characterizations. Taking the advantages of in-situ neutron diffraction deformation capability at the Spallation Neutron Source, we conducted in-situ tensile experiment on the TRIP-DP-HEA (Fe50Mn30Co10Cr10), to reveal the entire tensile deformation mechanisms of closely coupled transformation, slip and twining. We identified four stages of deformation depending on the anisotropy in structure and dominance of different mechanisms, including elastic region, initial transformation, stable transformation and final stage with HCP dominant in deformation. The details of how transformation and slip evolve in different phases as well as texture development will be presented.
||Planned: Supplemental Proceedings volume