|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High Entropy Alloys IV
||Slip nucleation in Single Crystal FeNiCoCrMn Entropy Alloy
||Luca Patriarca, Avinesh Ojha, Huseyin Sehitoglu
|On-Site Speaker (Planned)
The high entropy alloys are nowadays becoming a new important class of materials where high strength and ductility coexist even at cryogenic temperatures. Since the crescent interest on these alloys, in this work we present a study on the slip nucleation stress for the equiatomic FeNiCoCrMn composition. Experimentally, the [59 ̅1] crystal orientation in compression was chosen in order to have one primary slip system with the largest Schmid factor (0.50) active, and low Schmid factor (<0.40) for twinning. Compression experiments were conducted using advanced Digital Image Correlation strain measurements. The stress required for slip nucleation was precisely determined at room temperature and low temperature (77K) to be, respectively, τ293K=70MPa and τ77K=175MPa. The experimental values are found to be in good agreement with the theoretically calculated slip stresses utilizing the modified Peierls Nabarro (PN) formalism.
||Planned: A print-only volume