About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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| Presentation Title |
Different Scales of Chemical and Structural Ordering in Advanced High Strength Steels |
| Author(s) |
Dierk R. Raabe, Dirk Ponge, Binhan Sun |
| On-Site Speaker (Planned) |
Dierk R. Raabe |
| Abstract Scope |
Structural and chemical ordering phenomena across multiple length scales are typical characteristics of a number of advanced high-strength steels. They include features such as short and medium-range chemical ordering; highly ordered nanoprecipitate patterns; coupled mesoscopic chemical-structural ordering effects that can come from kinetic freezing, from the chemical decoration of lattice defects in part in conjunction with locally confined phase transformation effects and/or from chemical container phases that can be driven into a partial dissolution state that can trigger local phase transformations.
These ordering features have been realised in a number of medium and high manganese steels, often with lean chemical bulk composition. These hierarchical ordering effects that involve different chemical and structural features across several length scales can be used to design a complex strain hardening behaviour and can even help to enhance the materials’ resistance to hydrogen embrittlement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Phase Transformations |