Development of RAFM steels for high temperature applications guided by thermodynamic modelling

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Development of RAFM steels for high temperature applications guided by thermodynamic modelling. / Kachko, Olga; Puype, Athina; Terentyev, Dmitry; Bonny, Giovanni; Van Renterghem, Wouter; Petrov, Roumen.

In: Nuclear Materials and Energy, Vol. 32, 101211, 09.2022, p. 1-11.

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Kachko, Olga ; Puype, Athina ; Terentyev, Dmitry ; Bonny, Giovanni ; Van Renterghem, Wouter ; Petrov, Roumen. / Development of RAFM steels for high temperature applications guided by thermodynamic modelling. In: Nuclear Materials and Energy. 2022 ; Vol. 32. pp. 1-11.

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@article{afac840e1eb748e3849bf3c41ffa361f,
title = "Development of RAFM steels for high temperature applications guided by thermodynamic modelling",
abstract = "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.",
keywords = "EUROFER97, Thermo-mechanical treatments, Thermodynamics, High temperature, Microstructure, Carbides",
author = "Olga Kachko and Athina Puype and Dmitry Terentyev and Giovanni Bonny and {Van Renterghem}, Wouter and Roumen Petrov",
note = "Score=10",
year = "2022",
month = sep,
doi = "10.1016/j.nme.2022.101211",
language = "English",
volume = "32",
pages = "1--11",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - Development of RAFM steels for high temperature applications guided by thermodynamic modelling

AU - Kachko, Olga

AU - Puype, Athina

AU - Terentyev, Dmitry

AU - Bonny, Giovanni

AU - Van Renterghem, Wouter

AU - Petrov, Roumen

N1 - Score=10

PY - 2022/9

Y1 - 2022/9

N2 - 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.

AB - 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.

KW - EUROFER97

KW - Thermo-mechanical treatments

KW - Thermodynamics

KW - High temperature

KW - Microstructure

KW - Carbides

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/49564773

U2 - 10.1016/j.nme.2022.101211

DO - 10.1016/j.nme.2022.101211

M3 - Article

VL - 32

SP - 1

EP - 11

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

M1 - 101211

ER -

ID: 7718648