|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Characterization of Microstructure and Deformation Behavior of Several AlNbTaTiVZr Refractory Complex Concentrated Alloys (RCCAs)
||Bryan Crossman, Oleg Senkov, Jean-Philippe Couzinie, Rajarshi Banerjee, Maryam Ghazisaeidi, Michael Mills
|On-Site Speaker (Planned)
Refractory complex concentrated alloys (RCCAs) can offer attractive high temperatures properties and provide a potential solution to the increasing need for higher operating temperatures in transportation and energy applications. Many RCCAs are limited by their poor ductility at room temperature and phase instability at high temperature. Using SEM-based techniques, as well as atomic resolution STEM and high resolution EDS, this work investigates the microstructure and deformation behavior of an Al10Nb20Ta15Ti30V5Zr20 BCC+B2 RCCA, as well as alloys having the composition of the individual phases. The primarily single phase BCC and B2 alloys showed surprising plasticity at room and elevated temperatures in a previous study . Of special interest is the deformation twinning observed in the B2 alloy, which is generally unfavorable in B2, contributing to the plasticity.
 Senkov O., et al. "Mechanical Properties of an Al10Nb20Ta15Ti30V5Zr20 A2/B2 Refractory Superalloy and Its Constituent Phases." Acta Materialia (2023): 119017.
||Planned: Metallurgical and Materials Transactions