分子動力学法による BCC 鉄中の自己格子間拡散の研究
2008 年 72 巻 1 号 p. 39-42
詳細
2008 年 72 巻 1 号 p. 39-42
Self-interstitial diffusion in alpha-iron is investigated using an embedded-atom-method potential and molecular dynamics simulations. Curved Arrhenius plot is obtained for the temperature dependence of diffusion coefficients, which is well explained by the superposition of two transition processes among the two allotropic states of self-interstitial defects, the reformation of <110> dumbbell into another <110> configuration and one-dimensional solitonic propagation of a crowdion on <111> axis.
