|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Phase Stability and Deformation Behaviors of CrFeCoNiMox (x=0 – 0.3) High-entropy Alloys
||M Naeem, Haiyan He, Bing Wang, Xun-li Wang
|On-Site Speaker (Planned)
We have conducted a systematic study of the phase stability and deformation behaviors of CrFeCoNiMox (x=0 – 0.3) FCC high entropy alloys, using in-situ neutron scattering techniques and electron microscopy. For x=0.3, measurements by small angle scattering show that high-entropy alloys are stable up to 800 C, beyond which significant growth of precipitates were observed, which is responsible for the reduced strength at high temperatures. At room temperature, the deformation of CrFeCoNi alloys are dominated by dislocation activities, from dislocation slip at small strains to dislocation entanglement at large strains (up to 40%). At low temperatures, the alloys deform by stacking faults and serration, with a complicated deformation path which is fully captured by in-situ neutron diffraction measurements.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume