Article Dans Une Revue Materials Science and Engineering: A Année : 2012

On the role of long-range internal stresses on grain nucleation during dynamic discontinuous recrystallization

Résumé

The role of long-range elastic interactions in discontinuous dynamic recrystallization is assessed using a simple analytical model, taking into account dislocation pileup relaxation during embryo formation. Long-range dislocation pileup rearrangements following absorption of leading dislocations by a dislocation-free embryo provides an additional driving force that results in a drastic decrease of both nucleation critical radius and saddle point energy. A very sharp transition between a saddle point behavior and spontaneous grain nucleation is evidenced. The role of long-range internal stresses on grain nucleation during dynamic discontinuous recrystallization of ice, metals and minerals is shortly discussed.

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hal-05062297 , version 1 (26-03-2026)

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Paul Duval, François Louchet, Jérôme Weiss, Maurine Montagnat. On the role of long-range internal stresses on grain nucleation during dynamic discontinuous recrystallization. Materials Science and Engineering: A, 2012, 546, pp.207-211. ⟨10.1016/j.msea.2012.03.052⟩. ⟨hal-05062297⟩
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