Paper Titles
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p.47
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p.55
Some Thoughts and/or Questions about Activation Energy and Pre-Exponential Factor
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Kirkendall Effect: Dramatic History of Discovery and Developments
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DIGM - Entropy Balance and Free Energy Release Rate
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Kinetic Features of Reactive Diffusion in Binary Systems
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Influence of Liquid-Glass Transition on Diffusion and Nucleation in Computer-Simulated Iron
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Mathematical Modeling of Solid-State Diffusion during Mechanical Alloying
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The Magneto-Plastic Effect at Beryllium Bronze after Aging in the Constant Magnetic Field
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DIGM - Entropy Balance and Free Energy Release Rate

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Abstract:

A model of alloying in the three-layer thin-film system at the low temperature is constructed. Solid solution formation takes place as a result of the diffusion-induced grain boundary migration (DIGM). The unknown parameters are determined from the set of the equations for: (1) grain boundary diffusion along the moving planar phase boundary; (2) the entropy balance in the region of the phase transformation moving with constant velocity; (3) the maximum rate of the free energy release. We consider the model system with complete solubility of the components. The main parameters are self-consistently determined using thermodynamic and kinetic description in the frame of the regular solution model. The model allows determining the concentration distribution along the planar moving phase boundary, its velocity, the thickness of the forming solid solution layer and the limiting average concentration in this layer.

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Periodical:

Defect and Diffusion Forum (Volume 249)

Pages:

81-90

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.249.81

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Online since:

January 2006

Authors:

Yu.A. Lyashenko, Andriy Gusak

Keywords:

Diffusion, DIGM, Entropy Production, Grain Boundary Diffusion, Interphase Boundaries

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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