Index Catalog // ScholarsArchive@OSU

Creator:: Launey, Maximilien E.
Abstract:: Deformation of metallic glasses requires the existence of free volume to allow atomic movement under mechanical loading. Accordingly, the present research seeks to understand how free volume variations in alloys of identical compositions affect the fatigue and fracture behavior. By annealing below the glass transition temperature, the free volume of...
Resource Type:: Dissertation
Full Text:: . Title: Fatigue and Fracture of Bulk Metallic Glasses: Role of Free Volume. Abstract approved

Creator:: Way, Christopher D.
Abstract:: The viscosity of Zr[subscript 41.2]Ti[subscript 13.8]Cu[subscript 12.5]Ni[subscript 10.0]Be[subscript 22.5] (Vit1) has been measured above the liquidus temperature, T[subscript liq]=1026 K, using a high vacuum high temperature rapid annealing furnace equipped with a Couette Concentric Cylinder Rheometer. Steady state measurements have been taken over a temperature range of 1075-1300 K and...
Resource Type:: Dissertation
Full Text:: the ZrTiCuNjrn Bulk Metallic Glass Forming Alloy Above the Liciuidus Temperature Abstract approved

Creator:: Wadhwa, Prashant
Abstract:: The influence of shear rate and temperature on the viscosity and fragility of the Zr₄₁.₂Ti₁₃.₈Cu₁₂.₅Ni₁₀.₀Be₂₂.₅ (Vit1) metallic glass forming liquid is measured in the liquid and undercooled liquid state between 907 and 1300 K. The results show a complex rheological behavior of Vit1. The viscosity of Vit1 is about three...
Resource Type:: Dissertation
Full Text:: presented on November 21, 2007. Title: Non Newtonian Viscosity of Bulk Metallic Glass Forming Liquids

Creator:: Shaw, Tyler A.
Abstract:: A high temperature high vacuum rheometer has been designed, fabricated, and tested for the study of the steady shear viscosity for multicomponent bulk metallic glass forming alloys. This rheometer has an operating range up to 1525 K, rotational frequencies of 9.4*10⁻³-3.7*10¹ radians/s, and a calibrated viscosity range of 9.6*10⁻³ and...
Resource Type:: Dissertation
Full Text:: Measurements of Bulk Metallic Glass Forming Alloys Above the Liguidus TemDerature Abstract approved: RaIf

Creator:: Olsen, Kristopher R.
Abstract:: Amorphous metal thin films lack the grain boundaries and dislocations present in crystalline metal films. As a result, amorphous metal films can be more mechanically robust, atomically smooth, and more resistant to chemical attack than crystalline metals. However, amorphous metals are meta-stable and subject to crystallization upon heating, thus limiting...
Resource Type:: Dissertation
Full Text:: -transition temperature (Tg), and material type (BMG=Bulk Metallic Glass, TF=Thin Film)…………………………22 3.1

ScholarsArchive@OSU