| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
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| Symposium
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Microstructural Templates Consisting of Isostructural Ordered Precipitate / Disordered Matrix Combinations: Microstructural Evolution and Properties
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| Presentation Title |
Optimizing Composition and Microstructure in Compositionally Complex Alloys Possessing bcc and B2 Mixtures |
| Author(s) |
Zachary T. Kloenne, Brian A. Welk, Kamalnath Kadirvel, G. Babu Viswanathan, Jean-Philippe Cousinie, Yunzhi Wang, Hamish L. Fraser |
| On-Site Speaker (Planned) |
Hamish L. Fraser |
| Abstract Scope |
In several compositionally complex alloys (CCA), a microstructure is exhibited that includes mixtures of a bcc phase and the ordered B2 compound, and which often resembles that of Ni-base superalloys. The present study has involved an assessment of whether these new alloys offer a promise for intermediate and high temperature applications. The research has involved three aspects. In the first, the transformation pathway responsible for the development of microstructures has been determined using a combination of phase field modeling and microstructural characterization. In the second, the nature of the B2 phase has been studied, involving a determination of the site occupancy in the sub-lattices of the B2 compound, using spatially-resolved energy dispersive spectroscopy (XEDS). In the third, the nature of the interfaces between the ordered and disordered phases has been fully characterized using aberration-corrected (S)TEM, and the nature of slip transmission through these interfaces has been studied. |
| Proceedings Inclusion? |
Planned: |