| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Hetero-interface engineering and its impact on mechanical behavior of advanced steels |
| Author(s) |
Binhan Sun, Yan Ma, Xizhen Dong, Mohamed Elkot, Dirk Ponge, Dierk Raabe |
| On-Site Speaker (Planned) |
Binhan Sun |
| Abstract Scope |
Modern advanced steels often possess a multiphase structure and sometimes an ultrafine grain scale, which results in a high density of austenite-ferrite interphase boundaries. Here we show that the presence of these hetero-interfaces can strongly influence the dislocation emission behavior, deformation-driven phase transformation and damage formation in medium-Mn and high-Mn two-phase steels, which consequently affects a number of mechanical properties including materials’ yield strength, strain-hardening and damage-tolerant capability. We also show that a proper design of such interphase boundaries, through controlled thermomechanical processing that enables a pronounced phase boundary solute segregation, can affect the steels’ mechanical properties in various aspects. This segregation engineering of phase boundaries might provide some new insights on the thermomechanical processing design for modern advanced high-strength steels and other emerging multiphase heterogenous materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Environmental Effects |