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Showing 1 to 6 of 6 for “"Dislocation Theory"”.
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Application of Plane Elastic Dislocation Theory to Thickwalled Cylinder Analysis
Made available in DSpace on 2014-12-04T23:10:57Z (GMT). No. of bitstreams: 1 5801709.pdf: 2248872 bytes, checksum: 9ca8c95c95f97d2539528f60cb725bd6 (MD5) Previous issue date: 1958
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Polycrystal Modeling of Precipitate Effects on the Mechanical Behavior of an Aluminum -Copper Alloy
… hardening formulation was derived from dislocation theory resulting in both statistical and geometrical storage components, where the distinguishing microstructural length scales were included in the geometrical storage terms. The phenomenon of precipitation-induced anisotropy was …
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Control of Microstructure and Texture in Nanocrystalline Transition -Metal Nitride Coatings by Ion Beam Assisted Deposition Method
… to the film texture, which suggested that the dislocation theory is not applicable for the nano-sized grains. The minimum grain size required for the activation of slip systems in grains, was estimated to be ∼100nm. The grain rotational deformation and grain boundary sliding followed by …
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Multi-scale modelling of III-nitrides: from dislocations to the electronic structure
… layers contain a high density of defects such as dislocations. To reduce their number and to design a device with desired specifications, multilayered systems with varying composition (and thus material properties) are grown. Theoretical modelling is a useful tool for gaining understanding of …
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Continuum Damage Mechanics (CDM) modelling of dislocation creep in 9-12% Cr creep resistant steels
… dissertation was to develop a physically based dislocation creep model using the Continuum Damage Mechanics (CDM) approach. A dislocation CDM model was developed and implemented in the current work for uniaxial creep loading using the numerical modelling software Matlabᵀᴹ. The CDM approach was …
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On the Plasticity of Layered Crystals
… density shifts and locally ease the motion of dislocations. In theory, this effect may be modified through compositional substitutions within the layers, and as such it was proposed as a design basis for other ceramic layered systems, for example with a cubic crystal structure. Yet, …