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Peierls-nabarro barrier and stress of a/2 〈111〉 edge dislocation in α-Fe

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Czechoslovak Journal of Physics B Aims and scope

Abstract

The Peierls-Nabarro barrier and stress of thea/2〈111〉 edge dislocation on {112} and {110} plane inα-Fe at O K is calculated within the Peierls-Nabarro model. The method proposed by Nabarro is used, however, the sine force law is replaced by more general force laws based on two central interionic potentials inα-Fe. The values of the Peierls-Nabarro stress corresponding to one of the chosen interionic potentials, 3·5×10−4 μ and 1×10−4 μ on {112} plane (in the twinning direction) and on {110} plane, respectively, seem to be good estimates of the stress necessary to move edge dislocations inα-Fe at O K.

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Authors and Affiliations

  1. Institute of Physics, Czechosl. Acad. Sci., Prague, Na Slovance 2, Praha 8, Czechoslovakia

    L. Lejček

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  1. L. Lejček
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The author thanks Dr. F.Kroupa for discussion and reading the manuscript.

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Lejček, L. Peierls-nabarro barrier and stress of a/2 〈111〉 edge dislocation in α-Fe. Czech J Phys 23, 56–61 (1973). https://doi.org/10.1007/BF01596878

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  • DOI: https://doi.org/10.1007/BF01596878

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