| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced High Strength Steels IV
|
| Presentation Title |
End to End Simulation and Genetic Optimization for the Design of Medium Mn Steels |
| Author(s) |
Ioannis S. Aristeidakis, Gregory N. Haidemenopoulos |
| On-Site Speaker (Planned) |
Ioannis S. Aristeidakis |
| Abstract Scope |
Medium Mn TRIP steels have received considerable attention as candidates for the 3rd generation of AHSS. Limited attempts were made to optimize compositions and processing conditions leading to desirable properties. In the present study, the FeCMnAlSi system, was investigated using CALPHAD based thermodynamic and kinetic calculations, coupled with evolutionary and gradient based optimization techniques, to improve formability via TRIP and TWIP. A short list of compositions and intercritical annealing parameters were identified using thermodynamics, by solving a constrained multi-objective optimization problem via the NSGA-II algorithm, resulting in optimal combinations of quantity and stability of retained austenite. Kinetic calculations followed, to simulate the entire process chain including solidification, homogenization and cooling, as well as intercritical annealing and quenching. Favorable heat treatment processes were determined by solving additional optimization problems. The method could be used to accelerate the alloy design by reducing the experimental effort required for alloy development. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |