About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XX
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Presentation Title |
Electric Current Effect on the High-strain-rate Deformation of AA7075-T6 Al-alloy |
Author(s) |
Yu-Ching Chen, Kuan-hsueh Lin, Yu-Chen Liu, Tong Chen, Ting-Ju Chen, Woei-Shyan Lee, Shih-Kang Lin |
On-Site Speaker (Planned) |
Yu-Ching Chen |
Abstract Scope |
AA7075-T6 Al-alloy is a light material in the application of public transportation. However, the mechanical strength of Al-alloy is rather low to resist impact during traffic accident. Electric-current assisted manufacturing is attracting more attention nowadays. In this study, in situ high speed compression tests of electric current were performed using Split Hopkinson Pressure Bar to produce high-strain-rate deformation. Results showed that deformed AA7075-T6 samples with electric current passing through could endure larger plastic deformation, while the ones without electric current were severely shattered. We found precipitations formed at the sub-grain boundary diminished in the deformed alloy with electric current assisted with TEM analysis. The pole figure analysis via EBSD suggested that the alloys deformed without electric current assisted had a twin-like orientation while the ones with electric current assisted had a more random orientation. Overall, we show the potential of using electric current to enhance the impact-resistance of Al-alloy. |
Proceedings Inclusion? |
Planned: |