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Modifying bulk metallic glasses: Composites and configurational states.

机译:修改大块金属玻璃:复合材料和构型状态。

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摘要

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.
机译:大块金属玻璃(BMG)可能被认为与工程陶瓷具有某些相同的固有取舍。虽然BMG通常表现出高屈服强度,而有些却具有令人惊讶的断裂韧性,但它们几乎没有拉伸韧性,甚至没有拉伸韧性,并且在单轴载荷下会脆性破坏。概括地说,有两种互补的方法可以改善这些缺点:1)创建块状金属玻璃基复合材料(BMGMC)和2)改善整体BMG的性能。本文的结构反映了这一划分,第2-7章专注于创建和处理非晶态金属基复合材料,第8章专注于通过照射改变单晶BGM的构型状态来改变其性能。

著录项

  • 作者

    Kozachkov, Henry.;

  • 作者单位

    California Institute of Technology.;

  • 授予单位 California Institute of Technology.;
  • 学科 Materials science.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 163 p.
  • 总页数 163
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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