Development of RAFM steels for high temperature applications guided by thermodynamic modelling
Mechanical performance of reduced activation ferritic/martensitic (RAFM) steels for fission and fusion applications at high temperature (i.e. above the current limit of 550 °C) requires further improvement. In this contribution, we present the work aimed to improve the high temperature strength and...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122000953 |
| _version_ | 1798032483974905856 |
|---|---|
| author | O. Kachko A. Puype D. Terentyev G. Bonny W.Van Renterghem R.H. Petrov |
| author_facet | O. Kachko A. Puype D. Terentyev G. Bonny W.Van Renterghem R.H. Petrov |
| author_sort | O. Kachko |
| collection | DOAJ |
| description | Mechanical performance of reduced activation ferritic/martensitic (RAFM) steels for fission and fusion applications at high temperature (i.e. above the current limit of 550 °C) requires further improvement. In this contribution, we present the work aimed to improve the high temperature strength and creep resistance of RAFM steels. Two RAFM steel grades were developed based on thermodynamic modelling targeted to optimize the carbonitride precipitation distribution. A high content of carbonitride formers was considered to ensure high fraction of finely dispersed MX-type precipitates. Following the chemical tuning guided by thermodynamic modelling, the screening of different tempering conditions was performed in a high-throughput mode to find the optimal heat treatment for each model alloy. The model alloys were investigated in detail to assess the microstructure, tensile and impact properties. The results are used to validate the improvement of the new grades compared to the reference material EUROFER97. Furthermore, the results are compared with recent developments in high temperature RAFM steels obtained by other research groups. |
| first_indexed | 2024-04-11T20:14:36Z |
| format | Article |
| id | doaj.art-43271de7e85e4c8a842a1c8c2b9bfbfd |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-11T20:14:36Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-43271de7e85e4c8a842a1c8c2b9bfbfd2022-12-22T04:05:00ZengElsevierNuclear Materials and Energy2352-17912022-09-0132101211Development of RAFM steels for high temperature applications guided by thermodynamic modellingO. Kachko0A. Puype1D. Terentyev2G. Bonny3W.Van Renterghem4R.H. Petrov5UGENT, Technologiepark Zwijnaarde 46, 9052 Zwijnaarde, Belgium; Corresponding author.OCAS NV, Pres. J.F. Kennedylaan 3, 9060 Zelzate, BelgiumBelgian Nuclear Research Centre, SCK•CEN, Mol, 2400, BelgiumBelgian Nuclear Research Centre, SCK•CEN, Mol, 2400, BelgiumBelgian Nuclear Research Centre, SCK•CEN, Mol, 2400, BelgiumUGENT, Technologiepark Zwijnaarde 46, 9052 Zwijnaarde, BelgiumMechanical performance of reduced activation ferritic/martensitic (RAFM) steels for fission and fusion applications at high temperature (i.e. above the current limit of 550 °C) requires further improvement. In this contribution, we present the work aimed to improve the high temperature strength and creep resistance of RAFM steels. Two RAFM steel grades were developed based on thermodynamic modelling targeted to optimize the carbonitride precipitation distribution. A high content of carbonitride formers was considered to ensure high fraction of finely dispersed MX-type precipitates. Following the chemical tuning guided by thermodynamic modelling, the screening of different tempering conditions was performed in a high-throughput mode to find the optimal heat treatment for each model alloy. The model alloys were investigated in detail to assess the microstructure, tensile and impact properties. The results are used to validate the improvement of the new grades compared to the reference material EUROFER97. Furthermore, the results are compared with recent developments in high temperature RAFM steels obtained by other research groups.http://www.sciencedirect.com/science/article/pii/S2352179122000953EUROFER97Thermo-mechanical treatmentThermodynamicsHigh temperatureMicrostructureCarbides |
| spellingShingle | O. Kachko A. Puype D. Terentyev G. Bonny W.Van Renterghem R.H. Petrov Development of RAFM steels for high temperature applications guided by thermodynamic modelling Nuclear Materials and Energy EUROFER97 Thermo-mechanical treatment Thermodynamics High temperature Microstructure Carbides |
| title | Development of RAFM steels for high temperature applications guided by thermodynamic modelling |
| title_full | Development of RAFM steels for high temperature applications guided by thermodynamic modelling |
| title_fullStr | Development of RAFM steels for high temperature applications guided by thermodynamic modelling |
| title_full_unstemmed | Development of RAFM steels for high temperature applications guided by thermodynamic modelling |
| title_short | Development of RAFM steels for high temperature applications guided by thermodynamic modelling |
| title_sort | development of rafm steels for high temperature applications guided by thermodynamic modelling |
| topic | EUROFER97 Thermo-mechanical treatment Thermodynamics High temperature Microstructure Carbides |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122000953 |
| work_keys_str_mv | AT okachko developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling AT apuype developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling AT dterentyev developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling AT gbonny developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling AT wvanrenterghem developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling AT rhpetrov developmentofrafmsteelsforhightemperatureapplicationsguidedbythermodynamicmodelling |