| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phonons, Electrons and Dislons: Exploring the Relationships Between Plastic Deformation and Heat
|
| Presentation Title |
Thermal and Strain Rate Effects on
Plasticity and Fracture of Gen 3 Steels
|
| Author(s) |
Louis G. Hector |
| On-Site Speaker (Planned) |
Louis G. Hector |
| Abstract Scope |
Plasticity of multiphase Gen 3 steels involves martensitic transformation, or the diffusionless transformation of metastable retained austenite to martensite. Martensitic transformation is sensitive to thermal and strain rate effects in stamping and impact, both important for automotive. Elevated temperatures can slow transformation and interfere with the dynamic regulation of work hardening to delay plastic instability. This presentation will focus on recent experimental and computational research aimed at quantifying thermal and strain rate effects on Gen 3 steel plasticity and fracture with multi-length scale methodologies spanning atomistic to engineering. Results show effects of different deformation modes and strain paths on martensitic transformation, formability and fracture over a range of temperatures. The presentation will conclude with a discussion of future high-quality experimental data needs under various thermal and deformation conditions to support development of new Gen 3 steels as well as microstructure-based constitutive model development for Gen 3 steel automotive component simulations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Phase Transformations, Computational Materials Science & Engineering |