| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Dynamic Microstructural Evolution of Al-Cu Alloy during Friction Stir Processing Studied Using Synchrotron Based In Situ High Energy X-ray Diffraction |
| Author(s) |
Arun J. Bhattacharjee, Julian D Escobar Atehortua, Jorge F dos Santos, Jan Herrnring, Luciano Bergmann, Peter Staron, Benjamin Klusemann, Bharat Gwalani, Suveen Mathaudhu, Cynthia Powell, Arun Devaraj |
| On-Site Speaker (Planned) |
Arun J. Bhattacharjee |
| Abstract Scope |
To understand the dynamic microstructural evolution mechanisms during Friction Stir Processing (FSP) of a model Al-4 wt. % Cu alloy, in-situ high energy X-ray diffraction (HEXRD) experiments were performed at the Deutsches Elektronen-Synchrotron (DESY) using a portable FSP machine (Flexistir). The stir zone microstructural evolution was studied in two configurations. First, the x-ray beam was kept stationary at a single spot of the plate as the FSP tool moved across and away from it. In the second configuration, the x-ray beam followed the FSP tool maintaining a fixed distance in a trailing fashion while the sample was processed. Systematic analyses of the changes in lattice parameter and peak broadening were conducted as a function of FSP parameters for both measurement configurations. The in-situ HEXRD was then correlated with detailed ex-situ microscopy to understand the microstructural evolution mechanisms that operate during FSP. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Joining, Other |