Initial Analysis of the Surface Layer of AVGI Cast Iron Subject to Abrasion

• Autorzy: Jakubus Aneta

Identyfikatory

DOI

10.24425/afe.2022.140224

• Języki publikacji: EN

Abstrakty

EN

The article presents the results of research on the abrasion resistance of cast iron with vermicular graphite in the as-cast state and after austempering (the latter material is referred to as AVGI – Austempered Vermicular Graphite Iron). Austenitization was carried out at the temperature values of either 900°C or 960°C, and austempering at the temperature values of either 290°C and or 390°C. Both the austenitization and the austempering time was equal to 90 minutes. The change of the pearlitic-ferritic matrix to the ausferritic one resulted in an increase in mechanical properties. Abrasion tests were conducted by means of the T-01M pin-on-disc tribometer. The counter-sample (i.e. the disc) was made of the JT6500 friction material. Each sample was subject to abrasion over a sliding distance of 4000 m. The weight losses of both samples and counter-samples were determined by the gravimetric method. It was found that the vermicular cast iron austenitized at 900°C and austempered at 290°C was characterized by the lowest wear among the evaluated cast iron types. The geometric structure of the surface layer after the dry friction test exhibited irregular noticeable grooves, distinct oriented abrasion traces, plastic flow of the material, microcracks, and pits generated by tearing out the abraded material. The largest surface roughness was found for the AVGI cast iron heat-treated according to the variant 3 (Tγ =900 ºC; Tpi = 390°C), while the smallest one occurred in AVGI cast iron subject to either the variant 2 (Tγ =960 ºC; Tpi = 290°C) or the variant 4 (Tγ =900 ºC; Tpi = 290°C) of heat treatment and was equal to either 2.5 μm or 2.66 μm, respectively. It can be seen that the surface roughness decreases with the decrease in the austempering temperature.

Słowa kluczowe

EN

vermicular cast iron; abrasion resistance; austempering; abrasion of cast iron; surface layer; AVGI

PL

żeliwo wermikularne; odporność na ścieranie; hartowanie; ścieralność; warstwa wierzchnia; AVGI

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2022
• Tom: Vol. 22, iss. 2
• Strony: 50--56
• Opis fizyczny: Bibliogr. 39 poz., il., rys., tab., wykr.

Twórcy

autor

Jakubus Aneta

• The Jacob of Paradies University in Gorzów Wielkopolski, Gorzów Wielkopolski, Poland

Bibliografia

• [1] Hebda, M., Wachal, A. (1980). Tribology. Warsaw: Ed. Scientific and Technical Publishers.
• [2] Hebda, M. (2007). Processes of friction, lubrication and wear of machines. Warsaw – Radom: Ed. Institute of Sustainable Technologies - PIB.
• [3] Podrzucki, C. (1991). Cast iron. Structure, properties, application. vol. 1 and 2. Krakow: Ed. ZG STOP. (in Polish).
• [4] Kopyciński, D., Kawalec, M., et al. (2013). Analysis of the structure and abrasive wear resistance of white cast iron with precipitates of carbides. Archives of Metallurgy and Materials. 58(3), 973-976.
• [5] Szajnar, J., Walasek, A. & Baron, C. (2013). Tribological and corrosive properties of the parts of machines with surface alloy layer. Archives of Metallurgy and Materials. 58(3), 931-936.
• [6] Kovac, P., Jesic, D., Sovilj-Nikic, S., et al. (2018). Energy aspects of tribological behaviour of nodular cast iron. Journal of Environmental Protection and Ecology. 19(1), 163-172.
• [7] Cabanne, P., Forrest, R., Roedter, H. (2006). Sorelmetal about nodular cast iron. Warsaw: Metals & Minerals Ltd.
• [8] Gumienny, G. (2013). Effect of carbides and matrix type on wear resistance of nodular cast iron. Archives of Foundry Engineering. 13(3), 25-29.
• [9] Jeyaprakash, N., Sivasankaran, S., Prabu G., Yang, Che-Hua, & Alaboodi Abdulaziz S. (2019). Enhancing the tribological properties of nodular cast iron using multi wall carbon nano-tubes (MWCNTs) as lubricant additives. Materials Research Express. 6(4). DOI: https://doi.org/10.1088/2053-1591/aafce9
• [10] Wojciechowski A., Sobczak J. (2001) Composite brake discs for road vehicles. Warsaw: Motor Transport Institute.
• [11] Guzik, E. (2001). Cast iron refining processes. Selected Issues. Archive of Foundry. Monograph No. 1M, 2001. Ed. PAN.
• [12] Duenas, J.R., Hormaza, W. & CastroGüiza, G.M. (2019). Abrasion resistance and toughness of a ductile ironproduced by two molding processes with a shortaustempering. Journal of Materials Research and Technology. 8(3), 2605-2612.
• [13] Han, J.M., Zou, Q., Barber, G.C. & et al. (2012). Study of the effects of austempering temperature and time on scuffing behavior of austempered Ni–Mo–Cu ductile iron. Wear. 290-291, 99-105
• [14] Du, Y., Gao, X., Wang, X. & et al. (2020). Tribological behavior of austempered ductile iron (ADI) obtained at different austempering temperatures. Wear. 456-457(203396), 1-12. DOI: 10.1016/j.wear.2020.203396
• [15] Kochański, A., Krzyńska, A., Chmielewski, T. & Stoliński, A. (2015). Comparison of austempered ductile iron and manganese steel wearability. Archives of Foundry Engineering. 15(spec.1), 51-54.
• [16] Myszka, D. (2005). Microstructure and surface properties of ADI cast iron. Archives of Foundry. 5(15), 278-283.
• [17] Kumari, R., Rao, P. (2009). Study od’s wear behaviour of austempered ductile iron. Journal of Materials Research. 44, 1082-1093.
• [18] Medyński, D. & Janus, A. (2018). Abrasive – wear resistance of austenitic cast iron. Archives of Foundry Engineering. 18(3), 43-48.
• [19] Pytel, A. & Gazda, A. (2014). Evaluation of selected properties in austempered vermicular cast iron (AVCI). Works of the Foundry Research Institute. LIV(4), 23-31.
• [20] Panneerselvama, S., Martis, C.J., Putatunda, S. K. & Boileau, J. M. (2015). An investigation on the stability of austenite in Austempered Ductile Cast Iron (ADI). Materials Science and Engineering: A. 625, 237-246.
• [21] Kim, Y., Shin, H., Park, H. & Lim, J. (2008). Investigation into mechanical properties of austempered ductile cast iron (ADI) in accordance with austempering temperature. Materials Letters. 62(3), 357-360.
• [22] Krzyńska, A. (2013). Searching for better properties of ADI. Archives of Foundry Engineering. 13(spec.1), 91-96.
• [23] Krzyńska, A. & Kochański, A. (2014). Austenitization of Ferritic Ductil Iron. Archives of Foundry Engineering. 14(4), 49-54.
• [24] Wilk-Kołodziejczyk, D., Mrzygłód, B., Regulski, K. & et al. (2016). Influence of process parameters on the properties of austempered ductile iron (ADI) examined with the use of data mining methods. Metalurgija. 55(4), 849-851.
• [25] Khalaj, G., Pouraliakbary, H., Mamaghaniz, K. R. & et al. (2013). Modeling the correlation between heat treatment, chemical composition and bainite fraction of pipeline steels by means of artifcial neural networks. Neural Network World. 23, 351-367.
• [26] Kiahosseini, S. R., Baygi, S., J., M., Khalaj, G. & et al. (2017). a study on structural, corrosion, and sensitization behavior of ultrafine and coarse grain 316 stainless steel processed by multiaxial forging and heat treatment. Journal of Materials Engineering and Performance. 27, 271-281.
• [27] Polish Standard PN-EN 1563, Founding. Spheroidal graphite cast iron, (2000).
• [28] Polish Standard PN-EN ISO 945-1: Microstructure of cast irons. Part 1. Graphite classification by visual analysis. November 2009. Correction PN-EN ISO 945-1:2009/AC. April 2010.
• [29] Polish Standard PN-75/H-04661: Grey cast iron, nodular cast iron and malleable. Metallographic examinations. Determining of microstructure.
• [30] Soiński, M.S., Jakubus, A. (2014). Initial assessment of abrasive wear resistance of austempered cast iron with vermicular graphite. Archives of Metallurgy and Materials. 59(3), 1073-1076.
• [31] Kaczorowski, M. (2001). Structure and mechanical properties of ADI cast iron. Archive of Foundry. 1(1/2), 149-158.
• [32] Myszka, D., Kaczorowski, M., Tybulczuk, J. & Kowalski, A. (2004). Parameters of the ADI cast iron production process and its mechanical properties. Archive of Foundry. 4(11), 355-364.
• [33] Binczyk F., Gradoń P. (2010). Influence of heat treatment parameters on the formation of ADI cast iron microstructure. The work of IMŻ. 4, 5-14.
• [34] Pietrowski, S. (1997). Ductile iron with the structure of bainitic ferrite with austenite or bainitic ferrite. Archives of Materials Science. 18, 253-273.
• [35] Borowski, A.W. (1998). Synthetic ductile iron quenched with isothermal transformation (ADI). XXIII Scientific and Technical Symposium of the Foundry Engineering ITMat. Warsaw University of Technology, pp. 29.
• [36] Wróbel, J. (2013). Cast iron thermal fatigue resistance ADI. Crakow: PhD thesis. AGH.
• [37] Mierzwa, P. (2010). The effect of thermal treatment on the selected properties of cast iron with vermicular graphite. Doctoral thesis. Czestochowa University of Technology.
• [38] Institute of Sustainable Technologies. User manual. Tribology set T-01M, mandrel-disc type. State Research Institute. Radom 2010.
• [39] makland.com.pl. 28.02.2016, time 13.25.