| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Boron Segregation Behavior in a Microstructure Complex Multiphase Lightweight Steel |
| Author(s) |
Xizhen Dong, Aparna Saksena, Baptiste Gault, Dirk Ponge, Binhan Sun, Dierk Raabe |
| On-Site Speaker (Planned) |
Xizhen Dong |
| Abstract Scope |
Boron segregation at prior austenite grain boundaries has been investigated in the past decades. However, in materials with a complicated microstructure with various types of interfaces, the B segregation behavior remains elusive. Here we investigate a high-Mn, high-Al lightweight steel with an austenite and ferrite two-phase microstructure. We probe the segregation of B at various interfaces and its effect on the segregation behavior of other alloying elements. Our findings reveal that the boron segregation behavior at austenite grain boundaries leads to carbon depletion. The ferrite grain boundaries clarify the co-segregation of B, C and Mn while the depletion of Al. For the B segregation at phase boundaries, the segregation amount differs between the ones with and without the Kurdjomov-Sachs orientation relationship. On the other hand, B atoms heterogeneously segregate at typical ferrite grain boundaries and phase boundaries. These findings shed light on segregation engineering in complicated microstructures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |