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arXiv · 1301.1623

Mechanism for the α -> ε phase transition in iron

Bertrand Dupé·Bernard Amadon·Yves-Patrick Pellegrini·Christophe Denoual
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Abstract

The mechanism of the α-ε transition in iron is reconsidered. A path in the Burgers description of the bcc/hcp transition different from those previously considered is proposed. It relies on the assumption that shear and shuffle are decoupled and requires some peculiar magnetic order, different from that of α and ε phases as found in Density-Functional Theory. Finally, we put forward an original mechanism for this transition, based on successive shuffle motion of layers, which is akin to a nucleation-propagation process rather than to some uniform motion.

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Bertrand Dupé, Bernard Amadon, Yves-Patrick Pellegrini, Christophe Denoual. 2013-01-08. Mechanism for the α -> ε phase transition in iron. https://doi.org/10.1103/physrevb.87.024103

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