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Pré-Publication, Document De Travail Année : 2020

Variety of scaling behaviors in nanocrystalline plasticity

Résumé

Intermittent elasto-plastic deformation of sub-micron crystals features size-sensitivity of scaling exponents. We use a minimal integer-valued automaton model of crystal plasticity to show that with growing variance of quenched disorder, which can serve in this case as a proxy for increasing size, sub-micron crystals undergo a crossover from spin-glass-type marginality to criticality characterizing extended second order phase transition. We argue that this crossover is behind the non-universality of scaling exponents observed in physical and numerical experiments.

Dates et versions

hal-02644607 , version 1 (28-05-2020)

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P. Zhang, O. U. Salman, J. Weiss, L. Truskinovsky. Variety of scaling behaviors in nanocrystalline plasticity. 2020. ⟨hal-02644607⟩
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