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High-temperature long-service embrittlement of the R.A.F.M. EUROFER´97 steel
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SYSNO ASEP 0332730 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title High-temperature long-service embrittlement of the R.A.F.M. EUROFER´97 steel Author(s) Hadraba, Hynek (UFM-A) RID, ORCID
Stratil, Luděk (UFM-A) ORCID
Dlouhý, Ivo (UFM-A) RID, ORCIDNumber of authors 3 Source Title NMD-ATM 2009, Book of Abstracts. - Kolkata, 2009
S. 152Number of pages 1 s. Action NMD-ATM 2009 Event date 14.11.2009-17.11.2009 VEvent location Kolkata Country IN - India Event type WRD Language eng - English Country IN - India Keywords Eurofer97 ; embrittlement ; impact behaviour Subject RIV JG - Metallurgy R&D Projects IAA200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA106/08/1397 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The ferritic-martensitic reduced activation steel Eurofer´97 is candidate structural material for in-vessel components of proposed fusion reactors. The embrittlement of the high-chromium ferritic-martensitic steels implies important limitation for use of these materials. The microstructure and fracture properties of the Eurofer´97 steel sheets of thickness 25 mm were investigated in as-received state and in state after long-time thermal ageing (550 °C/5.000 h/air). Detailed microstructure studies were carried out by means of optical, electron and quantitative electron microscopy in as-received state and in state after long-time thermal ageing. Mechanical properties were evaluated in both states by means of Charpy impact testing. The microstructure of the Eurofer´97 consisted of tempered martensite with M23C6 and MX precipitates. The isothermal ageing caused evident shift in tDBTT about +5 °C, no proofs of embrittlement were observed on fracture surfaces. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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