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http://hdl.handle.net/1903/2164
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| Title: | Analysis and Control of Microstructure in Binary Alloys |
| Authors: | Lee, Kyuyong |
| Advisors: | Losert, Wolfgang |
| Department/Program: | Physics |
| Type: | Dissertation |
| Sponsors: | Digital Repository at the University of Maryland
University of Maryland (College Park, Md.) |
| Keywords: | Physics, General (0605)
Engineering, Materials Science (0794)
Dendrite;Grain Boundary |
| Issue Date: | 20-Dec-2004 |
| Abstract: | When metallic alloys solidify, various microstructures form inside the alloys.
Most solidified alloys have a polycrystalline structure, which is an assembly of crystalline grains with boundaries between any two grains. Each grain is a single crystal with a unique crystalline orientation. Many physical properties of polycrystalline alloys are determined by the arrangement of these grains and grain boundaries. During solidification of a single crystal, microstructures with even smaller microscopic lengthscales form, such as dendritic and eutectic structures. The physical properties of single crystal alloys are largely influenced by the lengthscales of these structures. Therefore, the understanding and control of microstructure formation in solidification is important in order to achieve desired properties.
Microstructures form while the system is not in equilibrium. What microstructures form is not based on minimization of free energy of the system, but depends on the dynamics of the ... |
| URI: | http://hdl.handle.net/1903/2164 |
| Appears in Collections: | Physics Theses and Dissertations
UM Theses and Dissertations
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| umi-umd-2146.pdf | | 3129Kb | Adobe PDF | 210 | View/Open |
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