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Mechanical and Microstructural Properties of Bulk Metallic Glass and Bulk Metallic Glass Composite as a Function of Temperature and Loading Conditions

Booth, Jessica A.
http://rave.ohiolink.edu/etdc/view?acc_num=case1396535770

Abstract Details

2014, Master of Sciences (Engineering), Case Western Reserve University, Materials Science and Engineering.
Fracture behavior of Zr-based bulk metallic glasses (BMG) and metallic glass matrix composites (BMGMC), was investigated while varying testing temperature, loading condition and strain rate. Samples were tested in tension, compression, three-point bending and Charpy impact in order to determine the effects of changes in strain rate and test temperature on the tensile strength, compressive strength, ductility, fracture toughness and impact toughness. An increase in temperature was found to have a similar effect as decreasing strain rate. At similar temperatures, displacement-controlled tensile tests caused severe necking to failure after significant ductility, while load-controlled conditions caused samples to draw into long, thin wires, a morphology that was not observed in BMGMC samples. Microstructural evolution of dendrites in deformed BMGMC samples was characterized using electron backscatter diffraction (EBSD) to determine change in crystallographic orientation with progressing deformation. Less dendrite area was indexable as deformation progressed, and the operative deformation mechanism was theorized to be dislocation motion.
Jennifer Carter, Dr. (Advisor)
John Lewandowski, Dr. (Advisor)
175 p.
Materials Science
bulk metallic glass; BMG composite; BMGMC; EBSD; mechanical behavior

Recommended Citations

Citations

  • Booth, J. A. (2014). Mechanical and Microstructural Properties of Bulk Metallic Glass and Bulk Metallic Glass Composite as a Function of Temperature and Loading Conditions [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1396535770

    APA Style (7th edition)

  • Booth, Jessica. Mechanical and Microstructural Properties of Bulk Metallic Glass and Bulk Metallic Glass Composite as a Function of Temperature and Loading Conditions. 2014. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1396535770.

    MLA Style (8th edition)

  • Booth, Jessica. "Mechanical and Microstructural Properties of Bulk Metallic Glass and Bulk Metallic Glass Composite as a Function of Temperature and Loading Conditions." Master's thesis, Case Western Reserve University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396535770

    Chicago Manual of Style (17th edition)

case1396535770
273
© 2014, some rights reserved.Creative Commons License Mechanical and Microstructural Properties of Bulk Metallic Glass and Bulk Metallic Glass Composite as a Function of Temperature and Loading Conditions by Jessica A. Booth is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.