Time evolution of mechanical amorphization: A kinetic model

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 2017 Spain English Publisher:Elsevier BVJournal:Scripta Materialia, volume 130, pages 260-263 (issn: 1359-6462,

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Authors: J.S. Blázquez; J.J. Ipus; A. Conde;

doi: 10.1016/j.scriptamat.2016.12.019

handle: 10261/192338

Time evolution of mechanical amorphization: A kinetic model

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Abstract

A model is proposed to describe the evolution of the amorphization process driven by mechanical grinding. This model considers the interface controlled growth of the disordered regions at the boundaries between the crystallites (unlike the classical nucleation and growth theory, the growing particles are thus concave which affects the kinetic equation). The validity of this model has been tested for the amorphization process of mechanically alloyed Fe-Nb-B system at different frequencies. Predictions of the model are in agreement with the experimental results and values of the linear growth rate and the thickness of the starting disordered layer are obtained.

This work was supported by MINECO and EU FEDER (projects MAT2013-45165-P and MAT2016-77265-R) and the PAI of the Regional Government of Andalucía. MINECO/ICTI2013-2016/MAT2016-77265-R

Country

Spain

Related Organizations

Spanish National Research Council
Spain
University of Seville
Spain

Keywords

Amorphous materials, Mechanical amorphization, Mechanical alloying or grinding

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