| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
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| Symposium
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Microstructural Template Consisting of a Face-Centered Cubic Matrix with Ordered Precipitates: Microstructural Evolution and Properties
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| Presentation Title |
FCC High-entropy Alloys Strengthened with L12 Precipitates: Alloying Strategies and Highlights |
| Author(s) |
Jean-Philippe Couzinie, Thomas Rieger, Jean-Marc Joubert, Mathilde Laurent-Brocq, Guy Dirras |
| On-Site Speaker (Planned) |
Jean-Philippe Couzinie |
| Abstract Scope |
Since 15 years, the alloy design based on the so called "high-entropy" approach emerges as a powerful tool to develop new materials with enhanced and sometimes unexpected properties. Among the potential material solutions for structural applications, high-entropy alloys based on 3d transition elements with FCC microstructures are promising. However these alloys are currently suffering of poor mechanical properties for temperatures above 800°C. A possible way for improving the high temperature mechanical behavior is to consider the (Ni,Co)3(Ti,Al) precipitation.
In this framework, a short review of some key results of the topic will be addressed. The different alloying strategies leading to duplex FCC+L12 microstructures will be discussed. More particularly, a part of the presentation will be focused on the high throughput CALPHAD calculations on the Ni-Co-Cr-Fe-Ti-Al senary system, allowing to screen compositions with the desired microstructure. Experimental results on few compositions selected from calculations will be exposed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |