Intermittent Dislocation Density Fluctuations in Crystal Plasticity from a Phase-Field Crystal Model
نویسندگان
چکیده
منابع مشابه
Intermittent dislocation density fluctuations in crystal plasticity from a phase-field crystal model.
Plastic deformation mediated by collective dislocation dynamics is investigated in the two-dimensional phase-field crystal model of sheared single crystals. We find that intermittent fluctuations in the dislocation population number accompany bursts in the plastic strain-rate fluctuations. Dislocation number fluctuations exhibit a power-law spectral density 1/f2 at high frequencies f. The proba...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2014
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.113.265503