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Licensed Unlicensed Requires Authentication Published by De Gruyter May 23, 2013

Grain growth in materials with mobile second-phase particles

  • Vladimir Yu. Novikov

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.


* Correspondence address, Prof. Dr. V. Y. Novikov, Treptower Str. 74d, D-22147 Hamburg, Germany, Tel.: +49 40 647 2845, E-mail:

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Received: 2006-11-11
Accepted: 2007-5-3
Published Online: 2013-05-23
Published in Print: 2007-10-01

© 2007, Carl Hanser Verlag, München

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