Forecasting in the presence of microstructural changes for the case of P91 steel after long-term ageing

• Autorzy: Zieliński A. , Miczka M. , Boryczko B. , Sroka M.

Identyfikatory

DOI

10.1016/j.acme.2016.04.010

• Języki publikacji: EN

Abstrakty

EN

The statistical analysis of experimental data was presented and the precipitate diameter forecast for selected steel grade was developed in this paper. The investigations of changes in the material microstructure were carried out under high-temperature conditions. Therefore, this material was characterised by increasing instability over time. Long-term ageing tests were carried on P91 steel for 103, 104, 3 × 104 and 7 × 104 h at 600 and 650 °C. The recorded microstructure images allowed the quantitative analysis of precipitates that occur mainly at the former austenite grain boundaries and martensite laths. The statistical distribution forecast was developed for the ageing time of 105 h. The forecasting under the conditions of material structure changes requires repealing classic assumptions adopted in the theory of prediction. Such methodology was proposed in this article. This article is the basis for the development of further research in this field. The proposed methodology can be used for diagnostic purposes and in the equipment failure risk assessment.

Słowa kluczowe

EN

microstructure; steel P91; ageing; precipitation; forecasting

PL

mikrostruktura; stal P91; starzenie się materiału; osad; prognozowanie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2016
• Tom: Vol. 16, no. 4
• Strony: 813--824
• Opis fizyczny: Bibliogr. 22 poz., rys., tab., wykr.

Twórcy

autor

Zieliński A.

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

autor

Miczka M.

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

autor

Boryczko B.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Al. Mickiewicza 30, 30-059 Krakow, Poland

autor

Sroka M.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego St. 18a, 44-100 Gliwice, Poland

Bibliografia

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Uwagi

PL

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