Alloy Behavior and Design

Publications

Dislocation loop formation in model FeCrAl alloys after neutron irradiation below 1 dpa

FeCrAl alloys with varying compositions and microstructures are under consideration for accident-tolerant fuel cladding, but limited details exist on dislocation loop formation and growth for this...

Seeing real-space dynamics of liquid water through inelastic x-ray scattering

Water is ubiquitous on earth, but we know little about the real-space motion of molecules in liquid water. We demonstrate that high-resolution inelastic x-ray scattering measurement over a wide range...

Structural relaxation, viscosity, and network connectivity in a hydrogen bonding liquid

In liquids, the ability of neighboring molecules to rearrange and jostle past each other is directly related to viscosity, the property which describes the propensity to flow. The presence of...

Research

Classes of materials worked on by the group include steels, stainless steels, iron and nickel base heat-resistant alloys and superalloys, lightweight metals, intermetallics, bulk metallic glasses, high entropy alloys, directionally solidified eutectic alloys, refractory alloys, powder metals/oxide dispersion strengthened, and platinum group alloys. End use applications range from structural uses in extreme environments (cryogenic, high-temperature, radiation, high mechanical loading, oxidizing, and corrosive) to functional needs such as are encountered in batteries, fuel cells, and hydrogen storage, to surface modification approaches to control surface chemistry and reactivity. The group has extensive laboratory facilities for melting, casting, heat treating, and powder processing of new materials. An emphasis of the group is materials design and improved fundamental understanding based on advanced microstructural characterization and modelling techniques ranging from first principles to computational thermodynamics and phase diagrams.

Contact

George B Ulrich

Program Manager, Radioisotope Power Systems Program and Group Leader, Alloy Behavior and Design Group

Group Members

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