| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced High Strength Steels IV
|
| Presentation Title |
Examination of Cementite+Austenite+Ferrite Multiphase Steel Produced by ART Annealing |
| Author(s) |
Oguz Gurkan Bilir, Ersoy Erisir, Kemal Davut |
| On-Site Speaker (Planned) |
Oguz Gurkan Bilir |
| Abstract Scope |
Austenitization of medium Mn steels between A1 and A3 temperature with martensitic microstructure is called as Austenite Reversion Transformation (ART) annealing. Steels that ART annealing is applied are promising for future applications with yielding a good balance of strength, toughness, energy absorption and forming properties thanks to having ferrite+austenite duplex microstructure. In this study, a new alloy (0.24%C-4.24%Mn-1.0%Si) is developed to study having a ferrite+austenite+cementite by applying ART annealing. ThermoCalc, DICTRA and Baehr dilatometer is used to decide the heat treatment strategy. SEM, XRD and EBSD are employed for characterization of microconstituents. Mechanical properties are revealed by sub-size mechanical testing. It resulted that having a wider gap between A1b and A1e temperature is an important factor for achieving ferrite+austenite+cementite. It was also concluded that using an ART annealing temperature higher than A1e lowers the possibility of enhancing austenite stability due to having lesser Mn content in Austenite. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |