Matrix replica method and artificial neural networks as a component of condition assessment of materials for the power industry

• Autorzy: Sroka M. , Zieliński A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: use of matrix replica method and artificial neural networks in condition assessment of materials working under creep conditions. Demonstration of scanning electron microscopy usefulness for correct assessment of the occurrence of internal damages. Design/methodology/approach: For material after long-term service the microstructural investigations were carried out on metallographic specimens and matrix replicas using light and scanning electron microscope. A computer program was used for material condition assessment. Findings: The way of material condition assessment by matrix replica method using a computer program as an example of the application of computer materials science methods was presented. The correct development of methodology for assessment of the degree of internal damages in steel working under creep conditions was found a result of verification. Critical comments on condition assessment of structure observed using light microscopy were presented. 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; degradation; matrix replica; steel 14MoV6-3; automatic classification

PL

struktura; degradacja; replika macierzy; stal 14MoV6-3; klasyfikacja automatyczna

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2012
• Tom: Vol. 58, nr 2
• Strony: 130--136
• Opis fizyczny: Bibliogr. 25 poz.

Twórcy

autor

Sroka M.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Zieliński A.

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

Bibliografia

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• [18]J. Dobrzański, A. Zieliński, M. Sroka, Structure, properties and method of the state evaluation of low-alloyed steel T23 (HCM2S) worked in creep conditions, Proceedings of the 11th International Conference on “Contemporary achievements in mechanics, manufacturing and materials science” CAM3S’2005, Gliwice-Zakopane, 2005, 171-180.
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• [20]M. Sroka, Methodology of computer forecasting of residual life of elements in creep service, PhD Thesis, Gliwice, 2006 (unpublished, in Polish).
• [21]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.
• [22]A. Zieliński, J. Dobrzański, D. Renowicz, A. Hernas, The estimation of residual life of low-alloy cast steel Cr-Mo-V type after long-term creep service, Proceedings of the 15th International Conference on “Advances in Material Technology for Fossil Power Plants”, Marco Island, 2007, 616-626.
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