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Publication
Surface Science
Paper
Computer simulation of vacancy migration in a fcc tilt boundary
Abstract
Vacancy jumps in a bicrystal model of Σ = 5 (36.9°) [001] tilt boundary in aluminum have been observed at temperatures between 700 and 800 K by means of molecular dynamics simulation. Preliminary results indicated considerable structure dependence and yielded an activation energy for vacancy migration of 0.38 eV. In contrast to a previous study of vacancy migration in a bcc tilt boundary, thermal activation of a boundary interstitial by Frenkel pair production was not observed. © 1984.