| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Precipitation Process during Isothermal Aging of an Austenitic Stainless Fe-12Cr-10Mn-12Ni-5Mo-0.24N-0.03C Steel and Its Effect on the Mechanical Properties |
| Author(s) |
Maribel Leticia Saucedo-Muñoz, Victor Manuel Lopez-Hirata, Erika Osiris Avila-Davila, Felipe Hernandez-Santiago, Jose David Villegas-Cardenas |
| On-Site Speaker (Planned) |
Victor Manuel Lopez-Hirata |
| Abstract Scope |
The precipitation process was studied during the isothermal aging at temperatures between 600 and 900 °C for times up to 1000 min. The aged specimens were characterized by SEM, XRD analysis, CVN impact test at –196 °C, and hardness test. Thermo-Calc analysis indicated that the Mo-rich M6C carbide precedes the precipitation of M2N nitrides in the austenite matrix at aging temperatures lower than 700 °C. The fastest growth kinetics takes place at about 800 °C for the M6C carbide and 850 °C for the M2N nitride. The CVN impact energy shows a decrease with aging time and temperature, while the Vickers harness indicates an increase with aging time. The intergranular precipitation was the main responsible for the decrease of cryogenic toughness. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Phase Transformations |