| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Digital Design of a Lightweight and Low-cost UHS Steel |
| Author(s) |
Antonio Vazquez Prudencio, Unnur Lilja Ţórđardóttir, Lu Meng, Robiul Haque Shaikh, Qing Chen |
| On-Site Speaker (Planned) |
Antonio Vazquez Prudencio |
| Abstract Scope |
A new generation of high-performance, ultra-high-strength (UHS) steels are required for lightweight applications at low prices. Traditionally, the outstanding properties of maraging (martensite-aging) steels emerge from semi-coherent nanoprecipitation in a martensitic matrix. However, coherency strains originating from the semi-coherent precipitates promote crack initiation under load and thus inevitably reduce ductility. Multiple authors have suggested as a solution a highly dense nanoprecipitation of Ni(Al,Fe) coherent precipitates with minimal lattice misfit and validated the idea experimentally. In this work, we computationally designed, from processing to performance, a UHS steel composed of Fe-Ni-Al-Mo with a higher specific yield strength and much lower price. Several foundational computational tools within the ICME framework were adopted to design the steel, including Thermo Calc, TC-Prisma, DICTRA, and TC-Python. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
ICME, Computational Materials Science & Engineering, Iron and Steel |