| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
J-24: Effect of Deformation Temperature on Strengthening Mechanism in Fe-22Mn-0.6C |
| Author(s) |
Hirokazu Kato, Sukyoung Hwang, Myeong-heom Park, Si Gao, Nobuhiro Tsuji |
| On-Site Speaker (Planned) |
Hirokazu Kato |
| Abstract Scope |
High-Mn austenitic steels have been widely studied because of their excellent work-hardening ability satisfying both high strength and large ductility, which is believed to result from deformation twinning. Meanwhile, high-Mn steels often exhibit serration behavior on their stress-strain curves. The serration behavior has been regarded as the result of the interaction between moving dislocations and solute atoms such as carbon, which is called dynamic strain aging. However, it is still unclear to what extent two strengthening mechanisms contribute to the good work-hardening ability of high-Mn austenitic steels.
In this study, Fe-22Mn-0.6C with a fully recrystallized microstructure was used. By performing tensile tests at various temperatures, mechanical properties were compared as a function of deformation temperatures. Moreover, we investigated real-time microstructural changes in tensile specimens such as dislocation density by using the in-situ synchrotron XRD measurement during tensile test. Detailed results will be discussed in the presentation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Iron and Steel, |