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Small scale plasticity; Nanoindentation; Crystallographic orientation; pre-existing faults; Grain boundaries; Dislocation nucleation; Taylor hardening; Dislocation starvation; Dislocation exhaustion; Molecular dynamics simulation
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Incipient Deformation Of Small Volumes Of Fcc Metals, Mahdi Bagheripoor
Incipient Deformation Of Small Volumes Of Fcc Metals, Mahdi Bagheripoor
Electronic Thesis and Dissertation Repository
In the area of mechanics of materials, the classic theories cannot describe the material behaviour as the volume of deformation or sample size is small enough to be compared with the size scales of the imperfections of the crystal. So, there has been a great deal of interest in investigating the plasticity of micron and nano-sized materials, in the last 20 years. As a Ph.D. research project, the deformation mechanism at small scales of fcc metals is studied based on dislocations behaviour. The effect of main parameters that haven’t been studied in detail, including, crystal orientation, pre-existing faults, grain boundaries, …