A Bulk Metallic Glass (BMG) is an amorphous solid with thickness greater than 1mm. Material properties of BMG, like twice the strength of regular steels and excellent corrosion resistance, make them ideal materials for fabrication of MEMS and MECS devices which have attracted a lot of research activity recently. Diffusion...
The development of amorphous metal alloys with high glass forming ability allows the fabrication of amorphous samples with thickness greater than 1mm, known as bulk metallic glasses(BMGs). Outstanding mechanical properties and ease in processing due to low melting points, low solidification shrinkage and higher supercooled liquid region make BMG a...
A model has been developed to predict the long-term
oxidation rate of Zircaloy-4 for ex-reactor (autoclave) and
in-reactor (PWR) environments and operating conditions. A
computer program has been written to solve the oxygen
diffusion equation by employing a fully implicit finite
difference method for a one dimensional cylindrical
geometry. The...
A study of the oxidation of zircaloy in reactor
environments has been undertaken with the goal of
characterizing of the Thermal Gradient Test Facility
(TGTF) at Teledyne Wah Chang, Albany. A set of
oxidation models is presented from the literature, as
well as an extensive database of published oxidation
test...
The fracture mechanics of Charpy V-notch specimens of
Zircaloy-4 and phosphorus contaminated Zircaloy-4 were
investigated. Three-point bend and impact tests with Charpy
V-notch samples provided an efficient and economical method
of fracture evaluation. Fracture failure was monitored by
the force-displacement curve. Failure was initially
analyzed using fracture toughness values as...
The motivation for undertaking this research was to increase the understanding of processing colloidal semiconductor nanocrystals and thin films metallic glasses to enable their wider application in future devices. This research covered two unique materials, lead selenide (PbSe) nanocrystals and thin film metallic glass alloy of zirconium copper aluminum nickel...