About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
|
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
Characteristics of Slip Localization in the HfNbTaTiZr Refractory High Entropy Alloy |
Author(s) |
J.C. Stinville, M.A. Charpagne, F. Wang, L.H. Mills, D.S. Gianola, T.M. Pollock |
On-Site Speaker (Planned) |
J.C. Stinville |
Abstract Scope |
Refractory high entropy alloys are promising for high temperature structural
applications. However, the plastic deformation processes that occur at room
temperature have important consequences for the ductility of these alloys. A better understanding of these processes may provide opportunities to improve room temperature properties. The micro-scale plasticity, including the onset of slip and early plastic localization, has been examined in tension in wrought processed polycrystalline bcc HfNbTaTiZr using high-resolution digital image correlation (HR-DIC) analysis coupled to electron back-scattered diffraction measurements. Slip activity is studied in a statistical manner over large representative regions containing hundreds of grains. Two different behaviors are identified with regard to the tendency for strain localization. These behaviors are discussed in relation to dislocation glide and avalanche processes and their consequences for mechanical properties at room temperature. |
Proceedings Inclusion? |
Undecided |