This article is cited in 1 paper

Mechanical properties, strength physics and plasticity

Activation energy of self-diffusion along symmetric tilt grain boundaries $\langle$111$\rangle$ in the Ni$_3$Al intermetallic compound

E. G. Kharina, M. D. Starostenkov, G. M. Poletaev, R. Yu. Rakitin

Altai State Technical University

Abstract: Activation energy of self-diffusion along symmetric tilt grain boundaries $\langle$111$\rangle$ in the Ni$_3$Al inter-metallic compound has been calculated depending on the temperature and misorientation angle. For comparison, two types of potentials of interatomic interaction have been used: pair Morse potentials and multi-particle Cleri–Rosato potentials. It has been shown that the activation energy of grain-boundary diffusion increases with temperature on applying the additional diffusion mechanisms. Three temperature ranges with various activation energies have been found.

Received: 02.09.2010

 English version: Physics of the Solid State, 2011, 53:5, 1043–1046

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