About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In Tribute to Robert Wagoner: A Pioneer in Metal Forming and Constitutive Modeling
|
| Presentation Title |
Laser-Assisted Roll Forming of a 2 GPa Ultra-High Strength Steel |
| Author(s) |
Jianfeng Wang, Zhou Wang, Zeran Hou, Junying Min |
| On-Site Speaker (Planned) |
Jianfeng Wang |
| Abstract Scope |
Ultra-high strength steel (UHSS) is commonly roll formed into structural components of an electric vehicle for battery protection, such as package frames, rocker reinforcements, and floor beams. However, forming UHSS above 1.5 GPa tensile strength is challenging due to its limited formability and blank dimensional variations. This work demonstrates a laser-assisted roll forming (LARF) process for a recently developed 2 GPa UHSS, using localized heating from a fiber laser to enhance local formability around tight bend radius. L-shaped coupons were successfully formed with bending radii as small as half the sheet thickness —advantageous for maximizing battery packaging density. Microstructure evolution under thermo-mechanical loading was compared between the new 2 GPa UHSS and conventional martensitic grade MS1700. Enhanced softening resistance and a smaller softened zone were observed in the new alloy after LARF. Based on these findings, optimal LARF processing parameters were identified, paving the way for robust manufacturing of ultra-high strength components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Shaping and Forming, Process Technology |