About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technology 2026: Advancement in Energy Materials - Theory, Simulation, Characterization, Application
|
| Presentation Title |
Twin-twin interactions in high Mn steels for LNG tank building |
| Author(s) |
Jun Chen |
| On-Site Speaker (Planned) |
Jun Chen |
| Abstract Scope |
A general problem of aging embrittlement in high Mn steel for cryogenic application has become a bottleneck problem to optimize microstructure and properties by heat treatment and is also a difficulty needed to be overcome in the business fabrication. It has been found in the applicant's previous studies that tuning elemental distribution in the grain boundary region has a potential to resolve the above difficulties. In this project, the two key problems, including the elemental distribution control in the grain boundary region and its controlled cryogenic toughening mechanism, are hence systematically investigated. The 3-dimensional atom distribution and the atomic fraction on {111} planes in the grain boundary region are analyzed by means of three-dimensional atom probe tomography and spherical aberration-corrected transmission electron microscopy. The elemental distribution ordering is also investigated. The control mechanism of elemental distribution in the grain boundary region is elucidated based on the interactions of alloying elements. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Process Technology |