About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
Presentation Title |
Short Range Order and the Evolution of Deformation Mechanisms in the CrCoNi Medium Entropy Alloy |
Author(s) |
Andrew M. Minor |
On-Site Speaker (Planned) |
Andrew M. Minor |
Abstract Scope |
This talk will describe our recent results utilizing electron microscopy and nanomechanical testing techniques to provide insight into multiscale deformation phenomena in the CrCoNi medium entropy alloy. In order to understand the effect of Short Range Order (SRO) in terms of the evolution of plasticity at different stages, the technique of 4D-STEM was used during in situ deformation and fracture experiments. 4D-STEM can provide both real-space imaging and diffraction analysis during in situ testing, making it possible to perform strain mapping via diffraction pattern analysis during in-situ deformation in a TEM. Lastly, we will discuss both the strengths and limitations of TEM methods for analyzing SRO in these systems, with particular emphasis on coordinated computational methods to simulate diffraction patterns in order to directly compare with experimental measurements. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, High-Entropy Alloys, Mechanical Properties |