| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
Deformation Mechanism and Microstructural Evolution in Al<sub>0.4</sub>CoCrFeNi High Entropy Alloy |
| Author(s) |
Anumat Sittiho, Jadzia Graves, Sanjit Bhowmick, Indrajit Charit, Rajiv Mishra |
| On-Site Speaker (Planned) |
Anumat Sittiho |
| Abstract Scope |
A high entropy alloy Al<sub>0.4</sub>CoCrFeNi produced by casting is the focus of the study to understand the deformation behavior and microstructure evolution under two types of mechanical testing: macro-compression and micropillar compression. Scanning electron microscopy and transmission electron microscopy were used to study the microstructural characteristics in the as-cast and deformed specimens to identify the micromechanical processes involved. Micropillars were fabricated using a focused ion beam scanning electron microscope. Micropillar compression testing of [001] oriented crystals exhibited significant strain hardening rate while almost negligible strain hardening rate in [111] oriented crystals was obtained. However, the yielding flow stress is found to be much higher for the [111] oriented crystals as opposed to [001] ones. The deformation characteristics of the macro-compression tests is discussed in light of the results obtained from the micropillar compression tests. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |