About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
|
Presentation Title |
The Question of Short Range Order and Its Impact on Deformation Mechanisms in CrCoNi |
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. Our results from electron microscopy are then correlated with mechanical testing including nanoindentation to examine how SRO evolves with different processing conditions. Lastly, we will consider the role of both SRO and planar defects in the both the mechanical response as well as structural determination via electron diffraction as a function of heat treatment in the CrCoNi MEA. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, High-Entropy Alloys, |