About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Characterization of Materials through High Resolution Coherent Imaging
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Presentation Title |
In Situ Bragg Coherent X-ray Diffraction Imaging Studies |
Author(s) |
David Yang, Nicholas W Phillips, Kay Song, Guanze He, Clara Barker, Wonsuk Cha, Ross J Harder, Wenjun Liu, Dina Sheyfer, Felix Hofmann |
On-Site Speaker (Planned) |
David Yang |
Abstract Scope |
Lattice defects control the properties of crystalline materials and can be engineered to induce specific material properties. Understanding how defects evolve in response to an external environment is paramount for selecting and designing materials. Here I will discuss three in situ BCDI experiments: annealing of focused ion beam damaged gold microcrystals, corrosion of a Co-Fe microcrystal alloy in hydrochloric acid, and electrochemical Hydrogen charging in a stainless-steel grain. For annealing, we note the evolution in strain and crystal morphology driven by gold atom migration and observe how defects are removed from the crystal. For corrosion, we determine that the more strained surface layers are corroded first, and note a facet-dependent corrosion rate based on exposure to the flowing acid. Finally, I will discuss nanoscale strain evolution as a result of Hydrogen charging and its implications on the properties of stainless-steel. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Iron and Steel, Other |