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Microstructure of super-austenitic steels after long-term annealing
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SYSNO ASEP 0354171 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microstructure of super-austenitic steels after long-term annealing Author(s) Kraus, M. (CZ)
Kroupa, Aleš (UFM-A) RID, ORCID
Miodownik, P. (GB)
Svoboda, Milan (UFM-A) RID, ORCID
Vřešťál, J. (CZ)Source Title International Journal of Materials Research. - : Walter de Gruyter - ISSN 1862-5282
Roč. 101, č. 6 (2010), s. 729-735Number of pages 7 s. Language eng - English Country DE - Germany Keywords phase equilibria ; microstructure ; super-austenitic steel Subject RIV BJ - Thermodynamics R&D Projects GA106/07/1078 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000279170400004 DOI 10.3139/146.110330 Annotation Longevity of materials, especially technological parts, is influenced by microstructure development during long-time annealing of such parts during their industrial service. Important relations between the volume fractions of phases and the time of service, especially the precipitation of intermetallics need to be revealed. The present study describes the time depedence of the structure development of two corrosion resistant steels with chromium content of 27 and 32 wt.% and various additions of nickel, molybdenum, manganese, silicon, copper and nitrogen. The microstructure was studied on samples annealed at 700oC for 500, 3188 and 6170 h, revealing the kinetics of the equilibrium process. The homogenity of samples was checked before heat treatment. The experimental microstructures are compared with the predicted phase composition. The effect of using different databases is also discussed. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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