| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Self-organizing Nano-architectured Materials
|
| Presentation Title |
Processing of Nanoporous FeCr by Liquid Metal Dealloying Technique Observed by In Situ Xray Tomography and Xray Diffraction |
| Author(s) |
Morgane Mokhtari, Christophe Le Bourlot, Jérome Adrien, Anne Bonnin , Wolfgang Ludwig, Pierre-Antoine Geslin, Takeshi Wada, Jannick Duchet-Rumeau, Hidemi Kato, Eric Maire |
| On-Site Speaker (Planned) |
Morgane Mokhtari |
| Abstract Scope |
Liquid metal dealloying (LMD) is a selective dissolution phenomenon of a solid alloy precursor into a metallic bath. Insoluble components spontaneously self-organize to get at room temperature a bicontinuous structure formed by the undissolved phase and solidified metallic bath phase. One phase can be removed by chemical etching to obtain the final nanoporous material. In this study, various in situ Xray experimental methods are combined to get a better understanding of the liquid metal dealloying phenomenon. FeCrx-Nix (FCC) precursors (with different x/(x+y) ratios) were dealloyed in Mg melt to obtain nanoporous FeCr (BCC). Both steps (dealloying and etching) are on the one hand, directly imaged by in situ Xray tomography, and on the other hand, followed by in situ Xray diffraction. The combination of the two different techniques gives a direct insight into not only the evolution of the morphology, but also the phase transformation and the strain field evolution. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Characterization, Iron and Steel, Phase Transformations |