On a correlation between hydrogen effects on atomic interactions and mobility of grain boundaries in the alpha-iron. Stage II. Mobility of grain boundaries in the H-charged alpha-iron

SM Teus and VG Gavriljuk, MATERIALS LETTERS, 259, 126859 (2020).

DOI: 10.1016/j.matlet.2019.126859

Using molecular dynamics, it is shown that, be located in the vicinity of grain boundaries, hydrogen in the alpha-iron increases their mobility. This effect is attributed to the hydrogen-increased concentration of free electrons, which decreases surface tension at grain boundaries. The obtained results allow to explain the early start of recrystallization in the hydrogenated cold-worked iron-based alloys. (C) 2019 Elsevier B.V. All rights reserved.

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