Strain Gradient Plasticity Theory Based on Dislocation - Controlling Mechanism for Nanocrystalline Materials

Jian Qiu Zhou; Lu  Ma; Rong Tao Zhu

doi:10.4028/www.scientific.net/AMR.97-101.2155

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Low Temperature Synthesis of TiO₂ Nanorods with Tunable Aspect Ratios from Ti and NH₄Cl Powders
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Preparation of Novel Silica Nanoparticle/Polystyrene Composite Microspheres in a Pickering Emulsion
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Strain Gradient Plasticity Theory Based on Dislocation - Controlling Mechanism for Nanocrystalline Materials
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The Improvement of Generalized Particle Method for Nano-Materials Molecular Dynamics Simulation
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Refinement of Microstructure in Steels through Thermomechanical Processing
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Equivalent Continuum Models for the Simulation of Mechanical Properties of Carbon Nanotube by Global-Local Homogenization Method
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101Strain Gradient Plasticity Theory Based on...

Strain Gradient Plasticity Theory Based on Dislocation - Controlling Mechanism for Nanocrystalline Materials

Abstract:

Due to their dissimilar properties and different deformation mechanisms between grain interior (GI) and grain boundary affected zone (GBAZ) in the nanocrystalline (NC) materials, a two-phase composite model consisting of GI and GBAZ was developed and adopted to build strain gradient plasticity theory. Comparison between experimental data and model predictions at different grain sizes for NC copper shows that the developed method appears to be capable of describing the strain hardening of NC materials.