Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Electron Backscatter Diffraction (EBSD)"”.
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Investigating effects of interpass time during hot finish rolling on the evolution of texture in AA3104 Can Body Stock
… were annealed and analysed using Scanning Electron Microscopy (SEM) and Electron Backscatter Diffraction (EBSD). Results indicate Position A exhibits smaller and larger grains, while Position B shows uniform grain size distribution. Texture analysis reveals stronger Cube texture in Position …
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Understanding the Phase Transformations of a Medium Manganese Steel as a Function of Carbon Content
… the samples were characterized using x-ray diffraction (XRD), electron backscatter diffraction (EBSD), electron probe microanalysis (EPMA), optical microscopy, and hardness testing. This thesis will discuss how the microstructure and hardness of these medium manganese steels is influenced by …
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Microstructures and mechanical properties of high pressure die cast A383 alloys
… energy dispersive x-ray spectroscopy (EDS) and electron backscatter diffraction (EBSD) methods. Secondly, the relationship between cast microstructures and mechanical properties under a range of casting compositions and conditions will be studied. Thirdly, the distribution of nanostructures …
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Efeito da soldagem com dupla camada na microestrutura e dureza da zona termicamente afetada do aço 9%Ni
… presented the best results were investigated by Electron Backscatter Diffraction (EBSD) and by computer simulation of welding thermal cycles with the Sysweld® software. As a result of the work, it was verified that the HAZ of the 9%Ni steel is predominantly martensitic and that multipass welding …
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Zinc alloy powders for alkaline batteries
… battery, zinc oxidizes to produce zinc oxide and electrons. Alkaline batteries are prone to leakage during storage. This phenomenon is caused by zinc dissolving into the alkaline solution and producing hydrogen gas as a byproduct. In the past, mercury was alloyed with zinc to slow down the …
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Influence of Mechanical Loading and Temperature on the Magnetic Properties of FeCo-2V Soft Magnetic Alloy
… in situ Digital Image Correlation (DIC), Electron Backscatter Diffraction (EBSD), synchrotron X-ray diffraction, Single Sheet Tester (SST) measurements, and magnetic loss analysis, this work offers a multiscale perspective on the relationship between mechanical deformation, microstructural …
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Multiscale In-Situ Characterization of Crystal Orientation, Temperature, and Microstructure Effects on Creep Defromation of Pure Magnesium and Mg-Al-RE Alloys
… included in-situ tensile creep testing, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and crystal plasticity finite element (CPFE) simulations. Together, these enabled orientation-sensitive analysis of creep behavior and links between microstructure and bulk creep …
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Application Of Scanning Hall Probe Microscopy For High Throughput Characterization Of Combinatorial Magnetic Materials
… Energy Dispersive X-ray Spectroscopy (EDS) and Electron Backscatter Diffraction (EBSD). Using this technique, the composition-structure-property relationship for the Co-Fe-Ni diffusion system was determined for the first time. This study demonstrates that Scanning Hall microscopy can be used for …
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Characterization of Stresses and Strains Involved in the Martensitic Phase Transformations
… transformations, using three techniques, namely: electron backscatter diffraction (EBSD), high-resolution digital image correlation (HRDIC) and in situ neutron diffraction. It is shown here that applied stress favours the formation of strain-induced martensite in certain orientations of austenite. …
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Brittle-viscous deformation cycles at the base of the seismogenic zone in the continental crust
… waste. Combined microstructural analysis, electron backscatter diffraction (EBSD), and mineral chemistry were applied to reconstruct the variations in pressure, temperature, fluid pressure, and differential stress that mediated deformation and strain localization along BFZ045 across the …
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Relating fatigue crack growth to microstructure via multiscale digital image correlation
… geometry and orientation obtained through electron backscatter diffraction (EBSD). By linking accumulated fatigue strain to microstructure, a deeper understanding of fatigue crack growth was obtained. Plastic deformation in fatigue crack growth was found to follow lobes of high strain that …
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Mechanical Testing and Characterization of Proposed Copper Materials for the Disposal of Used Nuclear Fuel Waste
… or cold-sprayed (CS). Testing included scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) imaging, tensile tests, and micro-computed tomography (MicroCT). The findings presented in this thesis highlight the significant impact of heat treatment on the mechanical …
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Petrofabric investigation of the sulfide-rich basal zone of the Duluth Complex
… uniformly high in distal zones such as the DLS. Electron backscatter diffraction (EBSD) analyses show that crystallographic preferred orientations of silicate minerals are generally subparallel to magnetic lineations, confirming the magmatic origin of the magnetic fabric. X-ray computed …
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The Structure and Behavior of Plate Boundary Regions Through the Wilson Cycle
… in the upper crust. In it we present new electron backscatter diffraction (EBSD) data and in situ trace element and U-Pb isotopic compositions for monazite and titanite. These datasets provide quantitative constraints on the style and conditions of deformation in the weak middle crust …
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Semi-conductor Core Optical Fibers and Fabrication Dependence of the Grain Structure
… spectroscopy (EDS) for compositional analysis, electron backscatter diffraction (EBSD) for crystal orientation and grain size, optical and electron microscopy for physical fiber quality and optical transmission for core optical quality. A model was developed to relate the heat transfer with the …
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Hot-wire chemical vapour deposition of nanocrystalline silicon and silicon nitride : growth mechanisms and filament stability
… the dielectric widely applied in the microelectronics industry and are also effective antireflective and passivating layers for multicrystalline silicon solar cells. Research into the synthesis and characterization of nc-Si:H and SiNₓ thin films is vital from a renewable energy aspect. In …
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Insights into magmatic processes from the crystal orientation mapping of igneous microstructures
… Mapping crystallographic orientations using electron backscatter diffraction (EBSD) has revolutionised the study of deformed rocks, and is now emerging as a useful tool for studying igneous rocks. In this thesis, I combine EBSD with field, petrographic and geochemical observations to tackle …
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Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System
… Chapters 3 and 4 demonstrate the power of electron backscatter diffraction (EBSD) to investigate the processes leading to the formation of crystal aggregates and deformed crystals, which are observed in a wide variety of basaltic systems worldwide. Chapter 4 applies microstructural …
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Characterization of nitrogen effects in high energy density weldments of Nitronic 40 stainless steel
… welding environment for laser beam welding and electron beam welding can alter the resulting weld chemical composition, microstructure and therefore the mechanical properties. The room temperature mechanical properties of Nitronic 40 stainless steel weld metal from three different heats …
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Uncovering the role of biomineralisation in otolith trace element uptake by microstructural and microchemical analysis
… species. The aragonite orientation, as mapped by electron backscatter diffraction (EBSD), revealed the aragonite c-axis was preferentially aligned parallel with the otolith growth axis and perpendicular to the insoluble organic matrices orientation, as determined by Raman microspectroscopy, in the …
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