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Creep Behaviour and Microstructural Changes of Advanced Creep Resistant Steels after Long-term Isothermal Ageing
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SYSNO ASEP 0354915 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Creep Behaviour and Microstructural Changes of Advanced Creep Resistant Steels after Long-term Isothermal Ageing Author(s) Sklenička, Václav (UFM-A) RID, ORCID
Kuchařová, Květa (UFM-A) RID, ORCID
Svoboda, Milan (UFM-A) RID, ORCID
Kroupa, Aleš (UFM-A) RID, ORCID
Čmakal, J. (CZ)Number of authors 5 Source Title Materials Science Forum - ISSN 0255-5476
654-656, - (2010), s. 504-507Number of pages 4 s. Action Pacific Rim International Conference on Advanced Materials and Processing /7./ Event date 02.08.2010-06.08.2010 VEvent location Cairns Country AU - Australia Event type WRD Language eng - English Country CH - Switzerland Keywords creep resistant steels ; creep ; isothermal ageing Subject RIV JG - Metallurgy R&D Projects 2A-1TP1/057 GA MPO - Ministry of Industry and Trade (MPO) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000285374600123 DOI 10.4028/www.scientific.net/MSF.654-656.504 Annotation In this paper we will try to further clarify the creep-strength degradation of selected advanced creep resistant steels. In order to accelerate some microstructural changes and thus to simulate degradation processes in long-term service, isothermal ageing at 650°C for 10 000 h was applied to P91, P92 and P23 steels in their as-received states. The accelerated tensile creep tests were performed at temperature 600°C in argon atmosphere on all steels in the as-received state and after long-term isothermal ageing, in an effort to obtain a more complete description of the role of microstructural stability in high temperature creep of these steels. Creep tests were followed by microstructural investigations by means of both transmission and scanning electron microscopy and by the thermodynamic calculations. It is suggested that microstructural instability is the main detrimental process in the long-term degradation of the creep rupture strength of these steels. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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