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Neilson Thesis 2014 Final.pdf (2.97 MB)

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Weibull Modulus of Hardness, Bend Strength, and Tensile Strength of Ni-Ta-Co-X Metallic Glass Ribbons

Neilson, Henry Jathuren
http://rave.ohiolink.edu/etdc/view?acc_num=case1396008191

Abstract Details

2014, Master of Sciences (Engineering), Case Western Reserve University, Materials Science and Engineering.
In this study, the variations in mechanical properties and thermal stability of Ni-Co-Ta-based metallic glasses have been analyzed. Three different chemistries of metallic glass ribbons were analyzed: Ni45Ta35Co20, Ni40Ta35Co20Nb5, and Ni30Ta35Co30Nb5. These alloys possess very high density (approximately 11.5g/cm3) and very high strength (e.g. > 3 GPa). Differential scanning calorimetry (DSC) and x-ray diffraction (XRD) were used to characterize the amorphicity of the ribbons. Mechanical properties were measured via a combination of Vickers hardness, bending strength, and tensile strength for each chemistry. At least 50 tests were conducted for each chemistry and each test technique in order to quantify the variability of properties using both 2- and 3-parameter Weibull statistics. The variability in properties and their source(s) were compared to that of other engineering materials, while the nature of deformation via shear bands as well as fracture surface features have been determined using scanning electron microscopy (SEM).
John Lewandowski (Advisor)
118 p.
Materials Science
Weibull modulus; metallic glass; high density; Ni-Co-Ta-X; Ribbons; Hardness; Bend strength; Tension; mechanical characterization

Recommended Citations

Citations

  • Neilson, H. J. (2014). Weibull Modulus of Hardness, Bend Strength, and Tensile Strength of Ni-Ta-Co-X Metallic Glass Ribbons [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1396008191

    APA Style (7th edition)

  • Neilson, Henry. Weibull Modulus of Hardness, Bend Strength, and Tensile Strength of Ni-Ta-Co-X Metallic Glass Ribbons. 2014. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1396008191.

    MLA Style (8th edition)

  • Neilson, Henry. "Weibull Modulus of Hardness, Bend Strength, and Tensile Strength of Ni-Ta-Co-X Metallic Glass Ribbons." Master's thesis, Case Western Reserve University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396008191

    Chicago Manual of Style (17th edition)

case1396008191
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© 2014, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.