Austenitization of FerriticDuctile Iron

• Autorzy: Krzyńska A. , Kochański A.

Identyfikatory

DOI

10.2478/afe-2014-0085

• Języki publikacji: EN

Abstrakty

EN

Austenitization is the first step of heat treatment preceding the isothermal quenching of ductile iron in austempered ductile iron (ADI) manufacturing. Usually, the starting material for the ADI production is ductile iron with more convenient pearlitic matrix. In this paper we present the results of research concerning the austenitizing of ductile iron with ferritic matrix, where all carbon dissolved in austenite must come from graphite nodules. The scope of research included carrying out the process of austenitization at 900_oC using a variable times ranging from 5 to 240 minutes,and then observations of the microstructure of the samples after different austenitizing times. These were supplemented with micro-hardness testing. The research showed that the process of saturating austenite with carbon is limited by the rate of dissolution of carbon from nodular graphite precipitates.

Słowa kluczowe

EN

austenitization; ductile iron; ferritic matrix; matrix structure; ADI

PL

austenityzowanie; żeliwo sferoidalne; ADI

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 4
• Strony: 49--54
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Krzyńska A.

• Institute of Technology, Faculty of Production Engineering Warsaw University of Technology, Narbutta 85, 02-524 Warsaw POLAND

autor

Kochański A.

• Institute of Technology, Faculty of Production Engineering Warsaw University of Technology, Narbutta 85, 02-524 Warsaw POLAND

Bibliografia

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