Effect of Heat Treatment Parameters on the Toughness of Unalloyed Ausferritic Ductile Iron

• Autorzy: Guzik E. , Sokolnicki M. , Nowak A.

Identyfikatory

DOI

10.1515/afe-2016-0030

• Języki publikacji: EN

Abstrakty

EN

Studies were carried out to determine the effect of heat treatment parameters on the plastic properties of unalloyed ausferritic ductile iron, such as the elongation and toughness at ambient temperature and at – 60°C. The effect of austenitizing temperature (850, 900 and 950°C) and ausferritizing time (5 - 180 min.) at a temperature of 360°C was also discussed. The next step covered investigations of a relationship that is believed to exist between the temperature (270, 300, 330, 360 and 390°C) and time (5, 10, 30, 60, 90, 120, 150, 180, 240 min.) of the austempering treatment and the mechanical properties of unalloyed ausferritic ductile iron, when the austenitizing temperature is 950°C. The “process window” was calculated for the ADI characterized by high toughness corresponding to the EN-GJS-800-10-RT and EN-GJS-900-8 grades according to EN-PN 1564 and to other high-strength grades included in this standard. Low-alloyed cast iron with the nodular graphite is an excellent starting material for the technological design of all the ausferritic ductile iron grades included in the PN-EN-1624 standard. The examined cast iron is characterized by high mechanical properties stable within the entire range of heat treatment parameters.

Słowa kluczowe

EN

ductile cast iron; heat treatment; ADI; toughness; mechanical properties; ausferrite

PL

żeliwo sferoidalne; obróbka cieplna; ADI; wytrzymałość; właściwości mechaniczne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 2
• Strony: 79--84
• Opis fizyczny: Bibliogr. 9 poz., wykr.

Twórcy

autor

Guzik E.

• AGH University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland

autor

Sokolnicki M.

• Odlewnie Polskie S.A. Wyzwolenia 70, 27-200 Starachowice, Poland

autor

Nowak A.

• Odlewnie Polskie S.A. Wyzwolenia 70, 27-200 Starachowice, Poland

Bibliografia

• [1] Mrzygłód, B., Kluska-Nawarecka, S,. Kowalski, A., Wilk-Kołodziejczyk D. (2013). The use of TTT diagrams of low-alloy ductile iron to develop a technology for the production of ADI, Transactions of Foundry Research Institute, V. LIII, Number 4.
• [2] Yescas-Gonzalez, M.A. Modelling The Microstructure and Mechanical Properties of Austempered Ductile Cast Iron, http://slideplayer.com/slide/4922879/.
• [3] 3.www.slideshare.net/SAIFoundry/austempered-ductile-iron-production-properties-applications?next_slideshow=1.
• [4] Vasko, A. (2011). Influence of Transformation Temperature on Structure and Mechnical Properties pf Austempered Ductile Iron, Acta Metallurgica Slovaca. 17(1), 45-50.
• [5] Eric, O., Rajnovic, D., Sidjanin, L., Zec, S. & Janovic, M. (2005). An austempering study of ductile iron alloyed with copper, J. Serb. Chem. Soc. 70(7). 1015–1022.
• [6] Sokolnicki, M. & Guzik, E. (2014). Austempered ductile iron to work in the conditions of dynamic load, Archives of Foundry Engineering. 14(SI)4. 115–118.
• [7] Keogh, J.R. Austepered Ductile Iron (ADI) – A Green Alternative, AFS, Schaumburg, Illonois, USA (www.afsinc.org).
• [8] Hanc, A. & Binczyk, F. (2008). Structural analysis of austempered ductile iron obtained by Mössbauer spectroscopy, Archives of Materials Science and Engineering. 31(2), 101 – 104.
• [9] Furmanek, J. Binczyk, F. Gradoń, P. (2010). Effect of post-weld treatment parameters on the microstructure of ADI cast iron, Prace IMŻ. 4.

Uwagi

PL

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