About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Local Modification of Microstructure and Mechanical Properties in 7000 Series Al Alloys Achieved by Friction Stir Processing |
Author(s) |
Tanvi Ajantiwalay, Julian Escobar, Jia Liu, Matthew Olszta, Nasim Wahaz, Hrishikesh Das, Mert Efe, Piyush Upadhyay, Arun Devaraj |
On-Site Speaker (Planned) |
Tanvi Ajantiwalay |
Abstract Scope |
Friction-stir processing (FSP) was used to modify the microstructure of three 7000 series Al alloys (7085, 7075 and 7055). The microstructural refinement achieved by FSP, including dissolution of nanoscale precipitates, grain refinement and matrix compositional changes were characterized by using multi-modal microstructural characterization approach with scanning and transmission electron microscopy and atom probe tomography. The unique microstructural changes brought about by the FSP were then correlated to the local changes in the mechanical properties. The local mechanical properties of the base alloy (BM) and stir zone (SZ) were investigated using an in situ PI89 Picoindenter implemented in a plasma focused ion beam/scanning electron microscope. Nanoindentation and micropillar compression show a reduced hardness and yield strength but higher strains are accommodated in the SZ for all three alloys. Such advanced characterization studies will help create a baseline for the microstructure and properties of FSP’ed 7000 series alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Other |