Computer assisted evaluation of degree of exhaustion of T/P23 (2.25Cr-0.3Mo-1.6W-V-Nb) steel after long-term annealing

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

Abstrakty

EN

Purpose: The method of image analysis and artificial intelligence methods in the evaluation of materials while working in creep conditions were proposed. The application of scanning electron microscopy in the correct assessment of the degree of exhaustion was of a demonstration character. Design/methodology/approach: For the material after long-term operation in the creep tests microstructure examination was performed in a scanning electron microscope. To assess the degree of exhaustion of the material, the computer program was used. Findings: The article demonstrates how to assess the state of the material using a computer program as an example of the application of computer methods for materials science. The verification was found to develop methodologies for assessing the correct level of exhaustion while working in steel material creep conditions. 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 obtained results of changes in the mechanical properties, microstructure and in the precipitation processes are applied to the evaluating the condition of the elements in further industrial service.

Słowa kluczowe

EN

image analysis; steels; long-term annealing; T/P23 steel grade

PL

przetwarzanie obrazu; stal; długotrwałe wyżarzanie

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2013
• Tom: Vol. 64, nr 2
• Strony: 205--212
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Sroka M.

• 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 Institute of Engineering Materials and Biomaterials, Silesian University of Technology

Bibliografia

• [1] J. Dobrzański, A. Zieliński, M. Sroka, Microstructure, properties investigations and methodology of the state evaluation of T/P23 (2.25 Cr-0.3 Mo-1.6 WV-Nb) steel in boilers application. Journal of Achievements in Materials and Manufacturing Engineering 32 (2009) 142-153.
• [2] F. Deshayes, W. Bendick, K. Haarmann, J.C. Vaillant, New 2-3%Cr Steel Grades for Waterwall Panels and Superheaters, Report COST 501 -Liege, 1998.
• [3] J. Dobrzański, Development of the service characteristics of the new generation steel for design of the pressure elements of the supercritical pressure boilers - working out of data for designers, manufacturers, and users of power industry equipment, Report from the research project No. PZ- 00003/9/BM/2002 - unpublished (in Polish).
• [4]J. Dobrzański, A. Zieliński, M. Sroka, Structure, properties and method of the state evaluation of low-alloyed steel T/P23(HCM2S) worked in creep conditions, Proceedings of the “Mechanics, Manufacturing and Materials Science” CAM3S’2005, Gliwice-Zakopane, 2005.
• [5]J. Dobrzański, A. Zieliński, M. Sroka, The influence of simultaneous impact of temperature and time on the properties and structure of X10CrWMoVNb9-2 steel, Journal of Achievements in Materials and Manufacturing Engineering 34 (2009) 7-14.
• [6]L.A Dobrzański, M. Sroka, J. Dobrzański, Application of neural networks to classification of internal damages in steels working in creep service, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 303-306.
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• [13]L.A. Dobrzanski, W. Kwasny, B. Dolzanska, A. Sliwa, K. Golombek, G. Nowak The computer simulation of internal stresses of tool gradient materials reinforced with the WC-Co Archives of Materials Science and Engineering, 57 (1) (2012) 38-44.
• [14]A. Smalcerz, R. Przylucki, Impact of Electromagnetic Field upon Temperature Measurement of Induction Heated Charges, International Journal of Thermophysics 34/4 (2013) 667-679.
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• [16]M. Sroka, A. Zieliński Matrix replica method and artificial neural networks as a component of condition assessment of materials for the power industry, Archives of Materials Science and Engineering 58 (2012) 130-136.
• [17]Materials from SUMITOMO Metal Industries Ltd No 903F-2666, 906F-3220, 908F-3403 Development of High Strength 2,25Cr-1,6W-V-Nb Steel Tube (HCM2S) for Boiler Application, 1993, 1998.
• [18]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 24/2 (2007) 143-146.
• [19]M Sroka Methodology of computer forecasting of residual life of elements in creep service (2007) PhD Thesis.
• [20]A. Zieliński, J. Dobrzański, M. Sroka Changes in the structure of VM12 steel after being exposed to creep conditions, Archives of Materials Science and Engineering 49/2 (2011) 103-111.