Diffusions_Part_3

Diffusions_Part_3 - Spatially heterogeneous mobility of atoms Example Changes in atomic mobility during crystallization of amorphous metal Figures

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
University of Virginia, MSE 4270/6270: Introduction to Atomistic Simulations, Leonid Zhigilei Spatially heterogeneous mobility of atoms. Example. Atomic mobility is much more active at the front of crystallization. D is not really a diffusion coefficient in statistical thermodynamics sense, but rather a quantity that reflects an average mobility in this material undergoing phase transformation. Can we say that D is the diffusion coefficient? Is D a useful quantity to calculate? Does it say anything about the processes that are happening during the simulation? Changes in atomic mobility during crystallization of amorphous metal. Figures by L. V. Zhigilei and A. I. Mikhailin
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
University of Virginia, MSE 4270/6270: Introduction to Atomistic Simulations, Leonid Zhigilei Temperature dependence of diffusion Assuming Arrhenius behavior for the jump-frequency one can extract a vacancy migration energy or an average activation energy for atomic migration in a disordered system, = T
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/14/2012 for the course MSE 4270 taught by Professor Zhigilei during the Fall '11 term at UVA.

Page1 / 4

Diffusions_Part_3 - Spatially heterogeneous mobility of atoms Example Changes in atomic mobility during crystallization of amorphous metal Figures

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online