| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Investigation on Generation Mechanism of White Stripe Defects in Battery Aluminum Foils |
| Author(s) |
Wei Tang, Yang Sun, Ju Wenbin, Zhu Zizong, Wang Hongpo, Wang Yu |
| On-Site Speaker (Planned) |
Wei Tang |
| Abstract Scope |
White stripe defects are common surface imperfections in battery aluminum foils characterized by brighter strips at certain positions across the foil width that significantly affect the surface uniformity of the foil. This study investigated the generation mechanism of white stripe defects in 1060 and 1070 battery aluminum foils. The findings indicate that factors leading to white stripe defects primarily include metallurgical quality and rolling processes. The brighter stripes are attributed to higher titanium content, resulting from titanium enrichment and abnormal flow fields during the continuous casting process. During the deformation process, TiAl3 particles at the segregated titanium location causes differences in microstructure and texture compared to normal locations, with significantly strong {123}<634> texture. The higher presence of TiAl3 particles increases the hardness at defect positions compared to the aluminum matrix, accelerating roll wear and resulting in non-uniform surface conditions that also contribute to white stripe defects. |
| Proceedings Inclusion? |
Planned: Light Metals |