Sun Wenqiang,Zhou Zhu,Xu Amin,et al.Effect of Heat Treatment Process on Mechanical Properties of High Chromium Low Activated Ferritic-martensitic Steel[J].Special Steel,2024,45(02):105-111.
Sun Wenqiang,Zhou Zhu,Xu Amin,et al.Effect of Heat Treatment Process on Mechanical Properties of High Chromium Low Activated Ferritic-martensitic Steel[J].Special Steel,2024,45(02):105-111. DOI: 10.20057/j.1003-8620.2023-00171.
Effect of Heat Treatment Process on Mechanical Properties of High Chromium Low Activated Ferritic-martensitic Steel
Ferritic-martensitic steel is a kind of steel with excellent anti-radiation properties, which is one of superior candidate materials for structural components of the new generation of nuclear reactors with high radiation doses. The harsh service environment requires that ferritic-martensitic steel has good comprehensive mechanical properties, suitable grain size and few internal defects. In this paper, the effects of normalizing and tempering heat treatment on mechanical properties and microstructure evolution of new composition ferritic-martensitic steel were studied. At the same time, the Thermo-Calc software is used to calculate the volume proportion of different phase states and compare it with the experimental results, it finds that the calculated results of the two-phase ratio change are highly consistent with the experimental results. After normalizing treatment, the tensile strength and yield strength of the material are mainly affected by the ratio of two phases. The results show high-martensitic steel treated with 1 080 ℃ normalizing + 670 ℃ tempering heat has a tensile strength of 903 MPa and yield strength of 732 MPa, showing the best comprehensive performance of the materials.
Fiore A , Sartorio C , Tarantino M , et al . Material Performance in Lead and Lead-Bismuth Alloy [M]. 2020 : 218 – 241 .
Cabet C , Dalle F , Gaganidze E , et al . Ferritic-martensitic steels for fission and fusion applications [J]. Journal of Nuclear Materials , 2019 , 523 : 510 - 537 .
Gong X , Short M P , Auger T , et al . Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors [J]. Progress in Materials Science , 2022 , 126 : 100920 .
Marmy P , Oliver B M . High strain fatigue properties of F82H ferritic-martensitic steel under proton irradiation [J]. Journal of Nuclear Materials , 2003 , 318 : 132 - 142 .
Karl E . Materials research towards a fusion reactor [J]. Fusion Engineering and Design , 2001 , 56-57 : 71 - 82 .
Lucon E , Vandermeulen W . Overview of the tensile properties of EUROFER in the unirradiated and irradiated conditions [J]. Journal of Nuclear Materials , 2009 , 386-388 : 254 - 256 .
Sokolov M A , Tanigawa H , Odette G R , et al . Fracture toughness and Charpy impact properties of several RAFMS before and after irradiation in HFIR [J]. Journal of Nuclear Materials , 2007 , 367-370 : 68 - 73 .
Huang Q , Baluc N , Dai Y , et al . Recent progress of R&D activities on reduced activation ferritic/martensitic steels [J]. Journal of Nuclear Materials , 2013 , 442 ( 1-3 ): S2 - S8 .
Zhou X L , Xu Z Q , Shen Y Z , et al . Identification of precipitate phases in an 11%Cr ferritic/martensitic steel after short-term creep [J]. ISIJ International , 2018 , 58 ( 8 ): 1467 - 1473 .
Dvoriashin A M , Porollo S I , Konobeev Y V , et al . Influence of high dose neutron irradiation on microstructure of EP-450 ferritic-martensitic steel irradiated in three Russian fast reactors [J]. Journal of Nuclear Materials , 2004 , 329-333 : 319 - 323 .
Hashimoto N , Kasada R , Raj B , et al . Radiation effects in ferritic steels and advanced ferritic-martensitic steels [M]. Comprehensive Nuclear Materials . Amsterdam : Elsevier , 2020 : 226 - 254 .
Mao C L , Liu C X , Liu G W , et al . The correlation between the microstructural parameters and mechanical properties of reduced activation ferritic-martensitic (RAFM) steel: Influence of roll deformation and medium temperature tempering [J]. Metallurgical and Materials Transactions A , 2021 , 52 ( 1 ): 119 - 128 .
Mao C L , Liu C X , Yu L M , et al . Mechanical properties and tensile deformation behavior of a reduced activated ferritic-martensitic (RAFM) steel at elevated temperatures [J]. Materials Science and Engineering: A , 2018 , 725 : 283 - 289 .
Aghajani A , Somsen C , Eggeler G . On the effect of long-term creep on the microstructure of a 12% chromium tempered martensite ferritic steel [J]. Acta Materialia , 2009 , 57 ( 17 ): 5093 - 5106 .