About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
|
Presentation Title |
D-19: Microstructural Templating of HEAs: Deformation Processing of Hierarchical Structures |
Author(s) |
Michael Lastovich, Christopher Rock, Michael Bodunrin, Bharat Gwalani |
On-Site Speaker (Planned) |
Michael Lastovich |
Abstract Scope |
The mechanical properties of Multi-Phase High Entropy Alloys (MP-HEAs) have been shown to be tunable over large ranges with variations in processing, in part due to their rich and varied phase fields with temperature. This microstructural evolution can be further tuned by physical deformation and the introduction of structural defects into metastable phases, altering the resulting texture and even activating transformation pathways towards other non-equilibrium or kinetically limited phases and morphologies. In the presented study, a non-equiatomic AlCoCrFeNi MP-HEA was processed via various combinations of plastic deformation and annealing at different temperatures to produce hierarchical structures composed of predictable arrangements of local morphologies. The microstructural evolution and phase identification was characterized with SEM, EBSD and TEM, and mechanical characterization was performed at both room temperature and under elevated temperature conditions. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Phase Transformations, Mechanical Properties |