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 The News of Altai State University
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1-2(77)2013
Physics

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A.V. Veckman, B.F. Dem’yanov, I.A. Shmakov

Coefficients of Self-Diffusion on Grain Borders in Aluminium (Computer Calculation)

Self-diffusion mechanisms on tilt grain boundaries in aluminium are investigated using methods of computer simulation. Grain boundaries of general and special type with axes of misorientation [100], [110] and [111] are investigated in the range of angles of misorientation 10°÷60°. The Arrenius dependencies are constructed and characteristics of grain boundary self-diffusions D0 and Q are calculated. Comparison of self-diffusion characteristics and trajectories of atoms movement is spent. Selfdiffusion mechanisms in various temperature intervals are defined.
Key words: grain boundaries, self-diffusion, computer simulation.

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