Abstract
The grain growth process controlled by particles able to move together with grain boundaries is investigated by means of numerical simulation. The particles either located on grain boundaries or randomly distributed over the material volume are shown to retard grain growth. In the first case, the growth kinetics is described by a power law Dn – D0n = kt with the exponent n = 3, at particle volume fractions as low as 0.001. In the case of polycrystals with randomly distributed mobile particles the growth exponent n is larger than 3 and increases with an increase in the particle size or volume fraction.
References
[1] P.G.Shewmon: Trans. AIME230 (1964) 1134.Search in Google Scholar
[2] M.F.Ashby, J.Harper, L.Lewis: Trans. AIME245 (1969) 413.Search in Google Scholar
[3] M.F.Ashby, in: N.Hansen, A.R.Jones, T.Leffers (Eds.), Recrystallization and Grain Growth of Multi-phase and Particle Containing Materials, Risø, Roskilde, Denmark (1980) 325.Search in Google Scholar
[4] C.S.Smith: Trans. AIME175 (1948) 15.10.2307/1053831Search in Google Scholar
[5] G.Gottstein, L.S.Shvindlerman: Acta metall.41 (1993) 3267.Search in Google Scholar
[6] V.Y.Novikov: Acta metall.26 (1978) 1739.10.1016/0001-6160(78)90085-8Search in Google Scholar
[7] V.Y.Novikov: Scripta mater.46 (1999) 91.10.1016/S1359-6462(98)00340-6Search in Google Scholar
[8] V.Y.Novikov: Scripta mater.55 (2006) 243.10.1016/j.scriptamat.2006.04.006Search in Google Scholar
[9] E.R.Underwood: Quantitative Stereology, Addison-Wesley (1970).Search in Google Scholar
[10] G.Gottstein, L.S.Shvindlerman: Grain Boundary Migration in Metals: Thermodynamics, Kinetics, Applications. CRC Press, Boca Raton, USA (1999).10.1201/9781420054361Search in Google Scholar
[11] V.Novikov: Grain Growth and Control of Microstructure and Texture in Polycrystalline Materials, CRC Press, Boca Raton, USA (1996).Search in Google Scholar
[12] V.Y.Novikov: Scripta mater.39 (1998) 945.10.1016/S1359-6462(98)00249-8Search in Google Scholar
[13] S.J.Bennison, M.P.Harmer: J. Am. Ceram. Soc.66 (1983) C90.10.1111/j.1151-2916.1983.tb10065.xSearch in Google Scholar
[14] J.Zhao, M.P.Harmer: J. Am. Ceram. Soc.70 (1987) 860.Search in Google Scholar
[15] E.A.Grey, G.T.Higgins: Acta metall.21 (1973) 309.Search in Google Scholar
[16] B.N.Balandin, B.K.Sokolov, V.V.Gubernatorov: Phys. Met. Metallogr.49 (1980) 590.Search in Google Scholar
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