Modifying Bulk Metallic Glasses: Composites and Configurational States

Bulk metallic glasses (BMGs) maybe be considered to share some of the same inherent trade-offs as engineering ceramics. While BMGs typically exhibit high yield strengths, and while some have surprising fracture toughness, they exhibiting little to no tensile ductility, and fail in a brittle manner u...

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Bibliographic Details
Main Author: Kozachkov, Henry
Format: Others
Published: 2015
Online Access:https://thesis.library.caltech.edu/8811/1/KozachkovHenry2015Thesis.pdf
Kozachkov, Henry (2015) Modifying Bulk Metallic Glasses: Composites and Configurational States. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/Z9JQ0XZ4. https://resolver.caltech.edu/CaltechTHESIS:04022015-231633336 <https://resolver.caltech.edu/CaltechTHESIS:04022015-231633336>
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Summary:Bulk metallic glasses (BMGs) maybe be considered to share some of the same inherent trade-offs as engineering ceramics. While BMGs typically exhibit high yield strengths, and while some have surprising fracture toughness, they exhibiting little to no tensile ductility, and fail in a brittle manner under uniaxial loading. Speaking broadly, there are two complimentary approaches to improving on these shortcomings: 1) create bulk metallic glass matrix composites (BMGMCs) and 2) improve the properties of a monolithic BMG. The structure of this thesis mirrors this division, with chapters 2-7 focusing on creating and processing amorphous metal matrix composites, and chapter 8 focusing on modifying the properties of a monolithic BGM by altering its configurational state through irradiation.