Effect of heat treatment parameters on abrasive wear and corrosion resistance of austenitic nodular cast iron Ni–Mn–Cu
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Influence of heat treatment parameters on abrasive wear and corrosion resistance of nodular cast iron Ni–Mn–Cu was examined. Chemical composition was selected in such a way, that austenitic matrix was obtained in raw castings (relatively good machinability). Heat treatment, consisting of soaking (450, 550, 650 °C for 4, 8, 12 h) and air cooling, led to partial transformation of austenite. At the lowest temperature, martensite was formed. Raising the temperature and prolonging the soaking time caused increase of austenite transformation degree. At the same time, a gradual change in morphology of the coniferous phase was observed in the direction of fine-acicular ferrite found in bainite or ausferrite. As a result, significant increase in hardness and wear resistance of castings was observed. The heat treatment caused slight changes in gravimetric corrosion rate. However, potentiodynamic studies indicate, that the nature of corrosion from local to uniform was changed. From the point of view of corrosion resistance, this is a very beneficial phenomenon.
Bibliogr. 16 poz., fot., rys., wykr.
- Faculty of Technical and Economic Sciences, Witelon State University of Applied Science in Legnica, Sejmowa 5A, Legnica, PL 59-220, Poland
- Department of Foundry Engineering, Plastics and Automation, Wrocław University of Technology, Łukasiewicza 3/5, Wrocław, PL 50-371, Poland
-  C. Podrzucki, Cast iron, strukture, properties, application, Ed. by ZG STOP, Krakow, 1991 (1/2) (in Polish).
-  A. Janus, Forming of Castings Structure of Austenitic Cast Iron Ni–Mn–Cu, Editorial Office of Wrocław University of Technology, Wroclaw, 2013 (in Polish).
-  A. Janus, K. Granat, Abrasion Resistant Austenitic–Bainitic Cast Iron, Report of Institute of Machine Engineering and Automation of Wroclaw University of Technology, SPR 28, 2005 (in Polish).
-  D. Medyński, A. Janus, Effect of chemical composition on structure and corrosion resistance of Ni–Mn–Cu cast iron, Arch. Found. Eng. 3 (16) (2016) 59–62.
-  D. Medyński, A. Janus, Effect of austenite transformation on abrasive wear and corrosion resistance of spheroidal Ni–Mn– Cu cast iron, Arch. Found. Eng. 3 (16) (2016) 63–66.
-  J.S. Rączka, A. Tabor, A. Kowalski, Resistance of austenitic– bainitic nodular iron on corrosive action of acids: sulfuric, nitric, hydrochloric, Arch. Found. 2 (44) (2000) 527–535 (in Polish).
-  D. Medyński, A. Janus, S. Zaborski, Effect of heat-treatment parameters of cast iron GJS-X350NiMnCu7-3-2 on its structure and mechanical properties, Arch. Found. Eng. 1 (17) (2017) 121–126.
-  A. Janus, K. Granat, Heat treatment of Ni–Mn–Cu cast iron, Arch. Civ. Mech. Eng. 4 (14) (2014) 602–607.
-  N. Fatahalla, A. AbuElEzz, M. Someida, C, Si and nickel alloying elements to vary carbon equivalent of austenitic ductile cast iron. Microstructure and mechanical properties, Mater. Sci. Eng. 504 (2009) 81–89.
-  M.N. Ahmabadabi, R. Shamloo, Control of austenitic transformations in ductile iron aided by calculation of Fe– C–Si–X phase boundaries, J. Phase Equilibr. 3 (22) (2001) 1994– 1998.
-  S. Pietrowski, G. Gumienny, Crystallization of ductile iron with the addition of Mo, Cr, Cu and Ni, Arch. Found. 22 (6) (2006) 113–406 (in Polish).
-  E.E. Guzik, Selected issues forming structure and properties ausferritic cast iron, Arch. Found. 21 (6) (2006) 33–42 (in Polish).
-  A. Kaczorowski, A. Krzyńska, Mechanical properties and structure of the graphite mixed cast iron on a two-stage austempering, Arch. Found. 18 (6) (2006) 89–94 (in Polish).
-  Operation and maintenance documentation of test stand T-07 for abrasion resistance testing of materials (SBT - 03.00.00/01).
-  H. Bala, Corrosion of Materials – Theory and Practice, Editorial Office of Process Engineering, Materials and Applied Physics of Czestochowa University of Technology, Czestochowa, 2002 (in Polish).
-  H. Cheng-Hsun, C. Ming-Li, Corrosion behavior of nickel alloyed and austempered ductile iron in 3.5% sodium chloride, Corros. Sci. (52) (2010) 2945–2949.
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)