| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Hot Deformation and Processing Maps of Austenitic Stainlesss Steel, FXM19 for Nuclear Reactor Prssure Vessel |
| Author(s) |
Jae Suk Jeong, Tae-Ho Lee, Jae Hoon Jang, Kwangsik Han, Jeon Young Song, Young Hwa Ma |
| On-Site Speaker (Planned) |
Jae Suk Jeong |
| Abstract Scope |
FXM-19 is an austenitic stainless steel exhibiting high strength and excellent corrosion resistance by utilizing larger amount of nitrogen compared to conventional austenitic stainless steels. Recently, FXM-19 has received increasing attention owing to its application to small modular reactor in nuclear industry. In the current presentation, the optimum window of chemical compositions and post forging heat treatment conditions were determined based on computational thermodynamics together with characterization of mechanical and corrosion properties. In particular, Bayesian artificial neural network were adopted to find optimum hot forging condition by establishing processing map which depict power dissipation efficiency contours superimposed by outlines of plastic instability regimes. To verify the processing map, microstructural analyses of hot compressed samples were performed using diffraction line profile analysis and electron back scattered diffraction. Based on these results, the verified optimum window of large-scale forging was determined and successfully applied for manufacturing of 3Ton mock-up scale FXM-19 product. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Shaping and Forming |