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Microstructure and impact properties of ferritic ODS ODM401 (14%Cr-ODS of MA957 type)
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SYSNO ASEP 0369886 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microstructure and impact properties of ferritic ODS ODM401 (14%Cr-ODS of MA957 type) Author(s) Hadraba, Hynek (UFM-A) RID, ORCID
Kazimierzak, B. (SK)
Stratil, Luděk (UFM-A) ORCID
Dlouhý, Ivo (UFM-A) RID, ORCIDNumber of authors 4 Source Title Journal of Nuclear Materials. - : Elsevier - ISSN 0022-3115
Roč. 417, 1-3 (2011), s. 241-244Number of pages 4 s. Language eng - English Country NL - Netherlands Keywords ODM401 ; MA957 ; oxide dispersion strengthened ; impact behaviour ; KLST Subject RIV JG - Metallurgy R&D Projects GAP108/10/0466 GA ČR - Czech Science Foundation (CSF) GA106/08/1397 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000297383000056 DOI 10.1016/j.jnucmat.2011.01.066 Annotation The oxide dispersion strengthened (ODS) steel ODM401 is one of the ODS steels developed during the 1960–1970s as a structural tubing material for fast breeder reactors, mainly because of their high-temperature strength and swelling resistance under irradiation. Nowadays, these steels are taken under consideration as a structural material for blanket and heat exchanger components in fusion reactors. The aim of the work was to describe fracture behaviour of ODM401 steel in connection to the microstructure. The microstructure of as-extruded ODM401 steel has fine grains elongated in the extrusion direction. The two population of Y–Ti–O particles sizes were found in the microstructure of size about 10–20 nm and 2–3 nm. Temperature dependence of KLST impact energy was measured and transition temperature tDBTT evaluated about −110 °C. The fracture surface was formed by alternated cleavage areas connected by inclined areas fractured by dimple micro mechanism proportional to the impact energy. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2012
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