| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Neutron and X-ray Scattering in Materials Science and Engineering
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| Presentation Title |
In situ X-ray diffraction reveals the early stages of solid phase alloying in the 7XXX Al alloy system |
| Author(s) |
Julian Escobar, Xiao Li, Akash Mukhopadhyay, Chang Chan, Harikrishnasinh Rana, Elizabeth Mathew, Lars Rath, Peter Staron, Emad Maawad, Uceu Suhuddin, Lei Li, Ayoub Soulami, Benjamin Klusemann, Cynthia Powell, Jorge dos Santos |
| On-Site Speaker (Planned) |
Julian Escobar |
| Abstract Scope |
During solid phase processing (SPP), solid state diffusivity is accelerated due to the synergetic effect of sustained severe shear and temperature (arising from plastic deformation and friction). Currently, there is a rich variety of examples of advanced characterization of meta-stable microstructures in literature obtained via SPP using the post-mortem methodology. However, observing the kinetics of solid-state diffusion during SPP is extremely challenging as it implies the use of real scale simulated manufacturing, while performing in situ characterization. In this work, we successfully reveal the kinetics of the early stages of elemental dissolution during solid phase alloying of mixed metallic powders within the Al7xxx series. In situ friction extrusion experiments were conducted using the Flexistir system at the P07 beamline at the German Synchrotron. A high energy synchrotron X-ray diffraction beam was positioned at the tool/powder interface, successfully revealing the kinetics of solid-state supersaturation for Al-Zn, Al-Cu, Al-Mg, and Al-Zn-Cu-Mg systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Powder Materials, Aluminum |