|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Investigation of Equiatomic AlNbTiMoV and AlNbTaTiV Alloys for High Temperature Applications
||Anne Denquin, Arnaud Grimonprez, Agnès Bachelier-Locq
|On-Site Speaker (Planned)
The objective of this study is the evaluation of high entropy alloys for aeroengines applications up to 1000°C. AlNbMoTiV and AlNbTiTaV equiatomic compositions have been produced by arc melting in the form of 250g ingots. As-cast microstructure and phase transformations during heat treatments have been investigated through SEM, DRX and TEM, revealing the ordered character of the matrix of both alloys and the extensive precipitation of the σ phase at 1000°C in the Ta containing composition. Mechanical properties have been evaluated through compression and creep-compression tests up to 800°C. Both alloys show yield strengths above 1200MPa at room temperature and serrations on the deformation curves at 500°C, indicative of a PLC-type effect. Results of creep tests will be presented and the results of mechanical investigations discussed in term of potential of these alloys for high temperature applications.
||Planned: Supplemental Proceedings volume