| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Comparison of Cold-Forming 1500 MPa Ultra-High-Strength Steels for Automotive Applications |
| Author(s) |
Jun Hu, Tobi Oriola, Yeting Sun, Eliseo Hernandez Duran, Grant Thomas |
| On-Site Speaker (Planned) |
Jun Hu |
| Abstract Scope |
Multiple cold-forming 1500 MPa ultra-high-strength steel (UHSS) grades have been developed to meet the elevating economic, safety and lightweighting needs in automotive applications. Nevertheless, due to the high martensite fraction in the microstructures, these UHSSs are typically of limited ductility. Accordingly, this work will start by presenting two representative 1500 MPa UHSS grades: one exhibits higher global ductility for better formability, while the other one shows higher local ductility for better fracture resistance. Based on their discrepant microstructures, this work will also discuss the corresponding mechanisms of global and local ductility of the UHSSs. A series of quasi-static, rate-dependent, and stress-state-dependent experimental results will be presented to support the discussions. The ultimate objective of this comparative study is to not only highlight the importance of distinguishing the global and local ductility for various automotive applications, but also provide the corresponding references for the future UHSS development concepts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Mechanical Properties |