|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||TEM study of a refractory complex concentrated alloy with BCC/B2 microstructure
||Jean-Philippe Couzinie, Milan Heczko, Veronika Mazanova, Oleg Senkov, Rajarshi Banerjee, Maryam Ghazisaeidi, Michael Mills
|On-Site Speaker (Planned)
Among the most promising structural materials, refractory complex concentrated alloys (RCCAs) are currently of major importance as they could retain high mechanical properties beyond 1000°C. Promising compositions are found in alloy systems for which the ordered B2 phase is present, as a matrix or precipitates together with a disordered BCC phase. However, some basic challenges have still to be addressed. This is especially the case regarding the impact of such complex microstructure in BCC/B2 RCCAs on deformation mechanisms. To this aim, the talk will give some insights into the microstructure and the deformation processes of an alloy Al-Nb-Ta-Ti-V-Zr after compressive testing at 25°C and 600°C. Detailed transmission electron microscopy analysis of the phases and also of the defects governing the plastic deformation will be reported and discussed.
||High-Entropy Alloys, High-Temperature Materials, Characterization