Time evolution of mechanical amorphization: A kinetic model. (15th March 2017)

• Record Type: Journal Article
• Authors: Blázquez, J.S.; Ipus, J.J.; Conde, A.
• Is Part Of: Scripta materialia. Number 130(2017)
• Page Start: 260
• Page End: 263
• Publication Date: 2017-03-15
• Subjects: Mechanical alloying or grinding -- Amorphous materials -- Mechanical amorphization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.12.019
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: