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Journal of Materials Science

, Volume 42, Issue 12, pp 4356–4363 | Cite as

The size refinement of Cu crystallites under mechanical processing conditions: a phenomenological modeling approach

  • F. DeloguEmail author
  • G. Cocco
Article

Abstract

A phenomenological model is developed for describing the kinetics of the crystallite size refinement process of Cu powder under mechanical treatment conditions. Based on the evidence that collisions represent the elementary events of energy transfer, the rate of crystallite size decrease is related on a statistical basis to the amount of powder trapped at each collision, to the number of collisions and to the collision energy. The mathematical approach allows for identifying the approximate functional form of the kinetic curves obtained at largely different impact energies. The values of the apparent kinetic constants and of the model parameters involved can be thus estimated by fitting the model curves to the experimental data. The results obtained provide a deeper insight into the details of the crystallite size refinement process.

Keywords

Crystallite Size Powder Particle Impact Energy Average Crystallite Size Milling Tool 

Notes

Acknowledgements

Financial support has been given by the University of Cagliari and the University of Sassari.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Dipartimento di Ingegneria Chimica e MaterialiUniversità degli Studi di CagliariCagliariItaly
  2. 2.Dipartimento di ChimicaUniversità degli Studi di SassariSassariItaly

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