The life time of super 304H austenitic steel power boiler components under the unstable operation conditions

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

Abstrakty

EN

Purpose: The purpose of the work was to analyse the components of Super 304H (X10CrNiCuNb18-9-3) steel steam pipelines of power units after long-term service beyond the design work time. Design/methodology/approach: The material for investigations included the 4th stage steam superheater coils, in the form of ø 42.4 x 8.8 mm pipes, made from Super 304H (X10CrNiCuNb18-9-3) steel, intended for operation under creep conditions at the design temperature 620°C and design pressure 28.5 MPa. Findings: The effect of cyclic creep, and therefore shut-downs and repeated start-ups after long-term service under creep conditions beyond the design work time was determined. Research limitations/implications: Practical implications: The presented method can be used for evaluation and qualification of structural changes in power station boiler components operating under creep conditions. Originality/value: The obtained results of investigations will be the elements of material characteristics developed by the Institute for Ferrous Metallurgy for steels made from them working under creep conditions.

Słowa kluczowe

EN

creep; Steel Super 304H; precipitation

PL

pełzanie; stal super 304H; osad

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2015
• Tom: Vol. 76, nr 2
• Strony: 115--121
• Opis fizyczny: Bibliogr. 25 poz.

Twórcy

autor

Dobrzański J.

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

autor

Zieliński A.

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

autor

Purzyńska H.

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

Bibliografia

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