Mikrostructural and mechanical properties changes of T321H steel after long time creep service

• Autorzy: Paszkowska H. , Hernas A. , Zieliński A. , Dobrzański J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Characteristics of changes in properties and structure of austenitic-matrix steels in delivery state and after long-term service. Design/methodology/approach: For selected degradation states of T321H steel of the mechanical testing and microstructural investigations were carried out with scanning and transmission electron microscope. Findings: Selected characteristics of structure and functional properties of materials to be used for elements in the pressure selection of power boilers were summarized in a single paper. Practical implications: Steel characteristics presented in this paper are used for assessment of structural changes and changes in strength properties of the material of elements after long-term service under creep conditions. Originality/value: The presented results of mechanical properties, structure and precipitation processes are applied to evaluation of the condition of elements in further industrial service.

Słowa kluczowe

EN

structure; mechanical properties; austenitic steel T321H

PL

struktura; właściwości mechaniczne; stal austenityczna T321H

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 58, nr 1
• Strony: 16--23
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Paszkowska H.

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

autor

Hernas A.

• Departament of Materiale Science, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Zieliński A.

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

autor

Dobrzański J.

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

Bibliografia

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• [3] A. Zieliński, Structure and properties of Super 304H steel for pressure elements o boilers with ultra-supercritical parameters, Journal of Achievements in Materials and Manufacturing Engineering 5/2 (2012) 403-409.
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• [5] A. Zieliński, J. Dobrzański , M. Sroka, Changes in the structure of VM12 steel after being exposed to creep conditions, Journal of Achievements in Materials and Manufacturing Engineering 34/1 (2011) 7-14.
• [6] A. Zieliński, J. Dobrzański, Material properties and structure of thick-walled elements made of steel 7CrMoVTiB10-10 after long-term annealing. Archives of Materials Science and Engineering 58/1 (2012) 5-12.
• [7] EPRI Project Manager D.Gandy, Remaining Life Assessment from the Amos 3 Austenitic Stainless Steel Secondary Superheater Tubes, Status Report, February 2005.
• [8] ASTM A231/A231M-99A Standard Specification for Seamless Ferritic and Austenitic Alloy – Steel Boiler, Superheater and Heat-Exchanger Tubes.
• [9] Materials of ECCC Data Sheets 2005, European Creep Collaborative Committee.
• [10] J. Dobrzański, A. Hernas, G. Moskal, Mirostructural degradation in power plant steels, Power plant life management and performance improvement, Woodhead Publishing Limited, Sawston, 2011.
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