100 citations · 185 across the 9 of their papers we have counts for
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Nanocrystalline Al-Mg with extreme strength due to grain boundary doping
Simon C. Pun, Wenbo Wang, Amirhossein Khalajhedayati +3
Nanocrystalline Al-Mg alloys are used to isolate the effect of grain boundary doping on the strength of nanostructured metals. Mg is added during mechanical milling, followed by lo…
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…
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…
Emergence of localized plasticity and failure through shear banding during microcompression of a nanocrystalline alloy
Amirhossein Khalajhedayati, Timothy J. Rupert
Microcompression testing is used to probe the uniaxial stress-strain response of a nanocrystalline alloy, with an emphasis on exploring how grain size and grain boundary relaxation…