Structure and properties of Super 304H steel for pressure elements of boilers with ultra-supercritical parameters

• Autorzy: Zieliński A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Material condition assessment with regard to required utility properties of Super304H austenitic steel for operation at elevated temperature. Design/methodology/approach: The structural and mechanical testing at room and elevated temperature after annealing at 650°C and 700°C for 1000 and 3000 h was carried out. Findings: The effect of temperature and duration of long-term annealing on mechanical properties, hardness and structure of tested was determined. Practical implications: The presented method can be used for evaluation and qualification of structural changes in power station boiler components operating in creep conditions. Originality/value: The presented results of changes in the mechanical properties, structure and in the precipitation processes are applied to evaluation the condition of the elements in further industrial service.

Słowa kluczowe

EN

structure; hardness; creep; Steel Super 304H

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 403--409
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Zieliński A.

• Institute for Ferrous Metallurgy, ul. K. Miarki 12, 44-100 Gliwice, Poland

Bibliografia

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• [6] G. Golański, Effect of the heat treatment on the structure and properties of GX12CrMoVNbN9-l cast steel, Archives of Materials Science and Engineering 46/2 (2010) 88-97.
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• [15] J. Dobrzański, A. Zieliński, M. Sroka, The influence of simultaneous impact of temperature and time on the properties and structure of X10CrWMoVNb9-2 steel, Journal of Materials Processing Technology 34 (1) (2009) 7-14.
• [16] J. Dobrzański, M. Sroka, Computer aided classification of internal damages the chromium-molybdenum steels after creep service, Journal of Achievements in Materials and Manufacturing Engineering 24 (2007) 143-146.
• [17] G. Golański, P. Wieczorek, Electron microscopy investigation of the Cr -Mo -V cast steel, Archives of Materials Science and Engineering 30/2 (2008) 73-76.