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Fatigue and fracture of bulk metallic glasses : role of free volume

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
Non Newtonian viscosity of bulk metallic glass forming liquids and the ordering and shear rate induced crystallization of undercooled Zr₄₁.₂Ti₁₃.₈Cu₁₂.₅Ni₁₀.₀Be₂₂.₅ metallic glass forming melt

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