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Specific Features of Structural-Phase State and Properties of Reactor Pressure Vessel Steel at Elevated Irradiation Temperature
Joint Authors
Kuleshova, E. A.
Gurovich, B. A.
Krikun, E. V.
Frolov, A. S.
Maltsev, D. A.
Bukina, Z. V.
Saltykov, M. A.
Balikoev, A. G.
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-03
Country of Publication
Egypt
No. of Pages
12
Abstract EN
This paper considers influence of elevated irradiation temperature on structure and properties of 15Kh2NMFAA reactor pressure vessel (RPV) steel.
The steel is investigated after accelerated irradiation at 300°C (operating temperature of VVER-1000-type RPV) and 400°C supposed to be the operating temperature of advanced RPVs.
Irradiation at 300°C leads to formation of radiation-induced precipitates and radiation defects-dislocation loops, while no carbide phase transformation is observed.
Irradiation at a higher temperature (400°C) neither causes formation of radiation-induced precipitates nor provides formation of dislocation loops, but it does increase the number density of the main initial hardening phase—of the carbonitrides.
Increase of phosphorus concentration in grain boundaries is more pronounced for irradiation at 400°C as compared to irradiation at 300°C due to influence of thermally enhanced diffusion at a higher temperature.
The structural-phase changes determine the changes of mechanical properties: at both irradiation temperatures irradiation embrittlement is mainly due to the hardening mechanism with some contribution of the nonhardening one for irradiation at 400°C.
Lack of formation of radiation-induced precipitates at T = 400°C provides a small ΔTK shift (17°C).
The obtained results demonstrate that the investigated 15Kh2NMFAA steel may be a promising material for advanced reactors with an elevated operating temperature.
American Psychological Association (APA)
Kuleshova, E. A.& Gurovich, B. A.& Krikun, E. V.& Frolov, A. S.& Maltsev, D. A.& Bukina, Z. V.…[et al.]. 2017. Specific Features of Structural-Phase State and Properties of Reactor Pressure Vessel Steel at Elevated Irradiation Temperature. Science and Technology of Nuclear Installations،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1203567
Modern Language Association (MLA)
Kuleshova, E. A.…[et al.]. Specific Features of Structural-Phase State and Properties of Reactor Pressure Vessel Steel at Elevated Irradiation Temperature. Science and Technology of Nuclear Installations No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1203567
American Medical Association (AMA)
Kuleshova, E. A.& Gurovich, B. A.& Krikun, E. V.& Frolov, A. S.& Maltsev, D. A.& Bukina, Z. V.…[et al.]. Specific Features of Structural-Phase State and Properties of Reactor Pressure Vessel Steel at Elevated Irradiation Temperature. Science and Technology of Nuclear Installations. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1203567
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203567