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   FEI STU Bratislava    deGruyter-Sciendo

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[6, 2016] 

Journal of Electrical Engineering, Vol 67, 6 (2016) 427-432 DOI: 10.1515/jee-2016-0062

RECONSTRUCTION OF α-IRON {100} SYMMETRIC TILT GRAIN BOUNDARIES Σ17(410)$ AND Σ13(510)

Eva Vitkovská – Peter Ballo

   A detailed numerical study on structure of symmetric tilt grain boundaries in $\alpha$-iron is presented. The study is focused on structural and energetic optimization of $\langle 100 \rangle$ grain boundaries $\Sigma 5(210)$, $ \Sigma 5(310)$, $\Sigma 17(410)$ and $ \Sigma 13(510)$. Particular attention is given to grain boundary reconstruction, which is characterized by increased atomic density in grain boundary plane compared to bulk. The results of our numerical experiments significantly improved our knowledge about the migration of atoms between planes perpendicular as well as parallel to GB plane as an essential part of grain boundary reconstruction.

Keywords: iron, grain boundary, relaxation, reconstruction, structural optimization, atomic migration


[full-paper]


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