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HomeSolid State PhenomenaSolid State Phenomena Vol. 265Isothermal Pearlite Formation Kinetics in...

Isothermal Pearlite Formation Kinetics in High-Chromium Cast Irons without Additional Alloying

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Abstract:

A model of isothermal pearlite reaction kinetics in high-carbon ternary Fe–Cr–C alloys (cast irons) containing (Cr, Fe)₇C₃ carbide phase is presented. The model is based on traditional Avrami approach completed with a simple type temperature dependence of K coefficient. The model parameters for individual alloys were determined from F. Maratray and R. Usseglio-Nanot’s experimental data covering composition range from 2.1 to 4.3 %C and from 12 to 26 %Cr. The dependence of parameters (Avrami exponent n, activation energy U and time-scale constant C) on gamma phase composition by the end of austenitization (calculated with account for kinetics of carbide dissolution) is determined. The model thus permits to calculate the isothermal pearlite Ccurve (TTT diagram) for an alloy of arbitrary composition after given austenitization regime. The comparison of calculation results to experimental data shows their sufficient correlation.

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Materials Engineering and Technologies for Production and Processing III

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Periodical:

Solid State Phenomena (Volume 265)

Pages:

884-888

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.265.884

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Online since:

September 2017

Authors:

K.Yu. Okishev*, E.S. Vasyukova, A.G. Grebenshchikova, A.S. Sozykina, D.A. Mirzaev

Keywords:

Austenite, Eutectoid Reaction, Fe-Cr-C System, Pearlite, Wear-Resistant Cast Irons

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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[1] I.I. Tsypin, White wear-resistant cast irons: Structure and properties, Metallurgiya Publ., Moscow, (1983).

[2] A.A. Zhukov, G.I. Sil'man, M.S. Frol'tsov, Wear-resistant castings of complex alloy white cast irons, Mashinostroenie Publ., Moscow, (1984).

[3] D.A. Mirzaev, N.M. Mirzaeva, A.N. Emelyushin, Ledeburite alloys for tools for machining of graphite, Metal Science and Heat Treatment. 30 (1988) 519-523.

DOI: 10.1007/bf00777442

[4] A.N. Emelyushin, D.A. Mirzaev, N.M. Mirzaeva, E.V. Petrochenko, N.V. Koptseva, Metal science, physics and mechanics applied to working of graphitized materials. Structure and wear resistance of tools. MGTU Publ., Magnitogorsk, (2002).

[5] A.N. Emelyushin, D.A. Mirzaev, N.M. Mirzaeva, E.V. Petrochenko, K. Yu. Okishev, O.S. Molochkova, Cast tools of chromium cast irons. Structure and properties. MGTU Publ., Magnitogorsk, (2016).

[6] K. Yu. Okishev, A.S. Sozykina, Structure and hardness changes with hardening temperature in high-chromium steels and cast irons, Bull. of the South Ural State Univ. Ser. Metallurgy. 14(16) (2011) 67-70.

[7] F. Maratray, R. Usseglio-Nanot, Atlas: courbes de tranformation de fontes blanches au chrome et au chrome-molybdène, Climax Molybdenum S.A., Paris, (1970).

[8] A.S. Sozykina, K.Y. Okishev, A.G. Grebenshchikova, D.A. Mirzaev, Kinetic description of (Cr, Fe)7C3 carbide dissolution in austenite of high-carbon Fe–Cr–C ternary alloy, Materials Science Forum. 870 (2016) 409-415.

DOI: 10.4028/www.scientific.net/msf.870.409

[9] B. -J. Lee, On the stability of Cr carbides, CALPHAD 16 (1992) 121-149.

[10] D.A. Mirzaev, K. Yu. Okishev, K.D. Mirzaeva, Analytical solution of the problem of diffusional transformation under continuous cooling condition based on isothermal transformation diagram data, Materials Performance and Characterization 2 (2013).

DOI: 10.1520/mpc20120023

[11] I.L. Mirkin, Investigation of eutectoid crystallization of steel, Structure and properties of steels and alloys. XVIII collection of works of the Moscow Steel Institute, Moscow, (1941) 5-158.

[12] K. Russev, S. Budurov, D. Danailov, T. Lazarowa, Uber die Kinetik der perlitischen Umwandlung eines eutektoiden Stahles bei kontinuierlicher Abkühlung, Zeitschrift für Metallkunde. 65 (1974) 686-691.

DOI: 10.1515/ijmr-1974-651106

[13] M. Umemoto, M. Komatsubara, I. Tamura, Effect of austenite grain size on the hardenability of eutectoid steel, Journal of the Iron and Steel Institute of Japan. 66 (1980) 400-409.

DOI: 10.2355/tetsutohagane1955.66.3_400

[14] J.V. Bee, R.W.K. Honeycombe, The isothermal decomposition of austenite in a high purity iron-chromium binary alloy, Metallurgical Transactions. A 9 (1978) 587-593.

DOI: 10.1007/bf02646416

[15] M.J. Whiting, A reappraisal of kinetic data for the growth of pearlite in high purity Fe–C eutectoid alloys, Scripta Materialia. 43 (2000) 969-975.

DOI: 10.1016/s1359-6462(00)00464-4