Assessment of Service Life of HCM12 Steel After 100 000 Hrs of Service

• Autorzy: Zieliński A. , Paszkowska H. , Skupień P. , Golański G.

Identyfikatory

DOI

10.1515/amm-2016-0173

• Języki publikacji: EN

Abstrakty

EN

The subject of the research was a material in the form of a ϕ38×4 pipe from HCM12 steel used for steam superheater coils in power boilers with supercritical and ultra-supercritical steam parameters. This article presents results of investigations of mechanical properties and microstructure of material of the examined tube in the as-received condition and after 100,000 h service at 585°C under creep conditions. Creep tests were carried out for the material after 100,000 h service to determine the disposable residual life. The impact of changes in mechanical properties and degradation of the microstructure on the loss of creep resistance compared to the as-received condition was assessed. The investigations have revealed that the examined steel after 100,000 h service meets the requirements for this steel in the as-received condition with regard to strength properties at room and elevated temperature. The creep tests have revealed a significant loss of creep resistance, which was estimated at around 60-70% compared to the as-received condition.

Słowa kluczowe

EN

steel HCM12; creep; microstructure; mechanical properties; residual life

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 2B
• Strony: 1021--1029
• Opis fizyczny: Bibliogr. 21 poz.,

Twórcy

autor

Zieliński A.

• Institute for Ferrous Metallurgy, 12-14 K. Miarki Str., 44-100 Gliwice, Poland

autor

Paszkowska H.

• Institute for Ferrous Metallurgy, 12-14 K. Miarki Str., 44-100 Gliwice, Poland

autor

Skupień P.

• Institute for Ferrous Metallurgy, 12-14 K. Miarki Str., 44-100 Gliwice, Poland

autor

Golański G.

• Czestochowa University of Technology, Institute of Materials Engineering, 19 Armii Krajowej Av., 42-200 Czestochowa, Poland

Bibliografia

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• [17] Vd TŰW Wekstoffblatt nr 510 - Warmfester Stahl HCM12, 1994.
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Uwagi

EN

The results in this publication were obtained as a part of research co-financed by the National Centre for Research and Development under contract PBS3/B5/42/2015 - Project: "Methodology, evaluation and forecast of operation beyond the analytical operating time of welded joints of pressure compo- nents of power boilers".

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę