|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XXI
||Electric Current-assisted Treatment for 7075 Aluminum Alloy to Withstand High-speed Impact
||Shih-kang Lin, Yu-chen Liu, Yu-ching Chen, Yu-ning Chiu
|On-Site Speaker (Planned)
Aluminum alloy has kept increasing the interest in the application of automobile industry because of its high strength and light weighting properties. High-speed impact is one of the most crucial reliability tests for automobile industry. In this study, we introduced the electric current-assisted treatment for 7075 aluminum alloy to withstand high-speed impact. When the alloy was T6-heat treated, we found precipitation free zone (PFZ) in the microstructure and fracture occurred after the high-speed impact. Nevertheless, when the alloy was electric current-treated, fracture did not occur and PFZ was found vanished. We believed electric current changed the precipitation stability and therefore enhanced the ductility of 7075 aluminum alloy. The technique would be beneficial to automobile industry.
||Aluminum, Mechanical Properties, Phase Transformations