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Anisotropic Size-Dependent Plasticity in Face-Centered Cubic Micropillars Under Torsion

التفاصيل البيبلوغرافية
العنوان: Anisotropic Size-Dependent Plasticity in Face-Centered Cubic Micropillars Under Torsion
المؤلفون: William D. Nix, Wei Cai, Huajian Gao, Ill Ryu
المصدر: JOM. 68:253-260
بيانات النشر: Springer Science and Business Media LLC, 2015.
سنة النشر: 2015
مصطلحات موضوعية: 010302 applied physics, Materials science, Condensed matter physics, General Engineering, Nucleation, Torsion (mechanics), 02 engineering and technology, Cubic crystal system, Plasticity, 021001 nanoscience & nanotechnology, 01 natural sciences, Crystallography, 0103 physical sciences, General Materials Science, Dislocation, Coaxial, 0210 nano-technology, Anisotropy, Stress concentration
الوصف: Three-dimensional dislocation dynamics (DD) simulations are performed to investigate the size-dependent plasticity in submicron face-centered cubic (FCC) micropillars under torsion. By using a previously implemented surface nucleation algorithm within DD, we show that the plastic behavior of FCC micropillars under torsion is strongly affected by the crystallographic orientation: In 〈110〉 oriented submicron pillars, coaxial dislocations nucleate and pile up near the axis, leading to homogeneous deformation along the pillars. In contrast, in 〈100〉 and 〈111〉 oriented pillars, heterogeneous plasticity has been observed due to the formation of localized dislocation arrays. As a result of the existence of a coaxial slip plane in 〈110〉 oriented pillars, stronger size-dependent plasticity is observed in this case compared with those in other orientations.
تدمد: 1543-1851
1047-4838
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::97335181c49c6fee539cb9ed0198a7dc
https://doi.org/10.1007/s11837-015-1692-1
حقوق: CLOSED
رقم الأكسشن: edsair.doi...........97335181c49c6fee539cb9ed0198a7dc
قاعدة البيانات: OpenAIRE
الوصف
تدمد:15431851
10474838