86 citations · 370 across the 73 of their papers we have counts for
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High-temperature stability and grain boundary complexion formation in a nanocrystalline Cu-Zr alloy
Amirhossein Khalajhedayati, Timothy J. Rupert
Nanocrystalline Cu-3 at.% Zr powders with ~20 nm average grain size were created with mechanical alloying and their thermal stability was studied from 550-950 °C. Annealing drove Z…
Amorphous intergranular films act as ultra-efficient point defect sinks during collision cascades
Joseph E. Ludy, Timothy J. Rupert
Atomistic simulations are used to explore the effect of interfacial structure on residual radiation damage. Specifically, an ordered grain boundary is compared to a disordered amor…
Grain boundary character distributions in nanocrystalline metals produced by different processing routes
David B. Bober, Amirhossein Khalajhedayati, Mukul Kumar +1
Nanocrystalline materials are defined by their fine grain size, but details of the grain boundary character distribution should also be important. Grain boundary character distribu…
Disruption of Thermally-Stable Nanoscale Grain Structures by Strain Localization
Amirhossein Khalajhedayati, Timothy J. Rupert
Nanocrystalline metals with average grain sizes of only a few nanometers have recently been observed to fail through the formation of shear bands. Here, we investigate this phenome…
Amorphous intergranular films as toughening structural features
Zhiliang Pan, Timothy J. Rupert
The ability of amorphous intergranular films to mitigate damage formation at grain boundaries is studied with molecular dynamics simulations. We find that such films can alter both…