Effect of the Annealing Temperature on the Microstructure and Properties of Ausferritic Nodular Cast Iron

• Autorzy: Gumienny G. , Klimek L. , Kurowska B.

Identyfikatory

DOI

10.1515/afe-2016-0047

• Języki publikacji: EN

Abstrakty

EN

The paper presents the microstructure and selected properties of ausferritic nodular cast iron annealed at the temperature 520 and 550°C. This choice was dictated by the temperatures used in the practice of nitriding. Nodular graphite in cast iron was obtained with use of Inmold process. Cast iron containing molybdenum and copper ensuring obtaining an ausferrite in the cast iron matrix without the use of heat treatment of castings was tested. The effect of annealing temperature on the microstructure and the kind of fracture of the ausferritic nodular cast iron was presented. The effect of an annealing temperature on hardness, impact strength and the microhardness of ausferritic nodular cast iron matrix was shown too. The lamellar structure of phases in the cast iron matrix after annealing has been ascertained. There has been an increase in hardness of an annealed cast iron and microhardness of its matrix. The reduction in the impact strength of the cast iron annealed at 520 and 550°C was approximately 10-30%. Both an increase in the hardness of cast iron as well as an decrease in its impact strength is probably due to the separation of secondary carbides during the heat treatment.

Słowa kluczowe

EN

innovative casting materials; innovative casting technologies; ausferritic cast iron; nodular cast iron; impact strength; annealing

PL

innowacyjne materiały odlewnicze; innowacyjne technologie odlewnicze; żeliwo ausferrytyczne; żeliwo sferoidalne; siła uderzenia; wyżarzanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 3
• Strony: 43--48
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Gumienny G.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

autor

Klimek L.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

autor

Kurowska B.

• Lodz University of Technology, Department of Materials Engineering and Production Systems, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

Bibliografia

• [1] Guzik, E. (2001). Some Selected Problems Concerning the Processes of Cast Iron Improvement. Monograph, 1M. Katowice: Archives of Foundry. (in Polish).
• [2] 49th Census of World Casting Production, Retrieved February 25, 2016, from http://www.foundryinfoindia. org/statis-tics/Dec15%20Census.pdf.
• [3] Guzik, E., Kapturkiewicz, W., Lelito, J. (2000). Principles of obtaining ausferritic cast iron. International Scientific Conference on ADI cast iron – offer of casting for constructors and cast users. Kraków, 23-24.IX.2000, I/11.
• [4] Tybulczuk, J., Kowalski, A.W. (2003). ADI cast iron – properties and application in industry. Casts Atlas. Kraków: Foundry Institute. (in Polish).
• [5] Keough, J.R. (2012). Austempered Ductile Iron (ADI) – A Green Alternative, Applied Process Inc., April 2010, Retrieved March 07, 2016, from http://www.applied-process.com/Custom/Document/GetFile/ab6da2d6-8675-437a-8c82-f32361edf768.
• [6] Retrieved March 07, 2016, from http://www.keytome-tals.com/page.aspx?ID=CheckArticle&site=kts&NM=243.
• [7] Guzik, E. (2006). Selected issues on the structure and properties of ausferritic cast iron. Archives of Foundry. 6(21), 33-42. (in Polish).
• [8] Guzik, E. (2010). Ausferritic cast iron and its forms – structure and selected properties, Tendencies for Optimization of Production Systems in Foundries, Collective Work edited by Stanisław Pietrowski, Katowice – Gliwice. 105-110.
• [9] Gumienny, G. (2013). Selected aspects of the theory and technology of the production of nodular cast iron with carbides obtained in the state as-cast, Scientific Journals No. 1140. Scientific Dissertations. Z. 440. Łódź: Publishing House of Lodz University of Technology. (in Polish).
• [10] Gumienny, G. (2013). Carbidic Bainitic and Ausferritic Ductile Cast Iron. Archives of Metallurgy and Materials. 58(4), 1053-1058.
• [11] Ferry, M. & Xu, W. (2004). Microstructural and crystallographic features of ausferrite in as-cast gray iron. Materials Characterization. 53(1), 43-49. DOI: 10.1016/j.matchar.2004-.07.008.
• [12] Paczkowska, M. (2013). Possibility analysis of laser nitriding of nodular iron. Surface Engineering. 2. 75-77. (in Polish).
• [13] Wang, N. & Liu, J. (2013). Effect of Process Parameters on Gas Nitriding of Grey Cast Iron. Advances in Materials Science and Engineering. 2013,(Article ID 217848), 1-6. DOI:10.1155/2013/217848.
• [14] Nicoletto, G., Konečná, R. Majerová, V. Fatigue Behavior and Fracture Mechanisms of Nitrided Nodular Cast Iron. Retrieved March 09, 2016, from http://www.gruppofrat-tra.it/ocs/index.php/esis/CP2006/paper/viewFile/9517/6140 access 20.05.2014.
• [15] Gumienny, G. & Klimek, L. (2014). Effect of Temperature on Ausferritic Nodular Cast Iron Microstructure. Archives of Foundry Engineering. 14(special 3), 21-24.

Uwagi

PL

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