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Creator:: Shah, Minalben B.
Abstract:: Among recently found multi-component Zr-based bulk metallic glasses (BMG), Zr₅₈.₅Cu₁₅.₆Ni₁₂.₈Al₁₀.₃Nb₂.₈ is characterized by its lower critical cooling rate requirement and absence of beryllium as one of the constituent element which makes its handling more convenient. Its large supercooled liquid regions made possible the study of thermodynamics and kinetics of this...
Resource Type:: Masters Thesis
Full Text:: constructive comments during DTA calibration and thermodynamic calculations. I am grateful to Manish Bothara

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:: Dr. Belinda Batten Dr. Willie “Skip” Rochefort Dr. Manish Bothara Vardan Rathi Dr. Dave

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:: John Liner Rory McKee Tom Vincent Manish Bothara Max Launey Ben Legg Ludi Shadowspeaker Minalben

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:: Manish Bothara Dr. Laura 0. Nichols Dr. Ping Ge Ray and Barbara Shaw Dr. Vinod Naraynan Cameron Shaw

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