Comparing the possibilities of austenite content determination in austempered ductile iron

• Autorzy: Myszka D. , Giętka T.
• Języki publikacji: EN

Abstrakty

EN

The article presents various methods for assessment of the austenite volume fraction in Austempered Ductile Iron (ADI). Tests were carried out on two types of ADI, i.e. unalloyed and alloyed with the addition of 0.72% Cu and 0.27% Mo, heat treated under different conditions of isothermal transformation to obtain different austenite volume fractions. The test material was then subjected to metallographic examinations, X-ray diffraction (XRD) analysis, an analysis using the author's genuine programme of artificial neural networks, image analysis and magnetic measurements. The results were compared with each other indicating the possibility of a quantitative measurement of austenite and other phases present in cast iron. It was found that different methods of measurement are not fully consistent with each other but show similar results of the austenite content.

Słowa kluczowe

EN

austempered ductile iron; austenite content; quantitative measurement

PL

żeliwo sferoidalne austenityczne; zawartość austenitu; pomiar ilościowy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3 spec.
• Strony: 135--140
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Myszka D.

• Institute of Precision Mechanics, ul. Duchnicka 3, 01-796 Warszawa

autor

Giętka T.

• Department of Materials Science and Engineering, Mechanical Engineering Faculty, University of Technology and Life Sciences , al. Kaliskiego 7, 85-796 Bydgoszcz, Poland

Bibliografia

• [1] PN-EN 1564, „Founding – Austempered Ductile Cast Iron”, 2000; (in Polish).
• [2] www.ductile.org.
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• [4] A. Kowalski, M. Kuder, Use of Computer Programme to the Analysis of Painting LUCIA to the Quantitative Opinion of the Structure of Cast Iron ADI. Innovations in Founding, Part I, Cracow (2007) 281-290 (in Polish).
• [5] T. Giętka, S. Dymski, The attempt at evaluation of the ADI microstructure with the use of the image in cast iron. Achives of Foundry Engineering, vol. 10, Issue 2, (2010) s. 57-62.
• [6] K. Miernik, R. Bogucki, A. Gądek, W. Dziadur, The Influence of Conditions of the Thermal Processing on Content of the residual austenite in Ductile Cast Iron of Ishothermal Transformation (ADI), Conference Materials XXX the School Engineering Material, Kraków-Ustroń-Jaszowiec (2002) (in Polish).
• [7] L. Wojnar, K. Kurzydłowski, J. Szala, The Practician of the Analysis of the Painting. Publishing house Polish Company Stereology, Cracow (2002) (in Polish).
• [8] Ł. Rauch, J. Kusiak, Automatic analysis of microstructure photographs. Scientific Papers, Warsaw University of Technology (2007), no. 216, s. 165–170.
• [9] J. Aranzabal, I. Gutierrez, J.M. Rodriguez-Ibabe, J.J. Urcola, Influence of the amount and morphology of retained austenite on the mechanical properties of an austempered ductile iron. Metallurgical and materials transactions A, vol. 28A, (1997), s. 1143–1156.