A material strength depends on its microstructure, which in turn, is controlled by an engineering process. Strengthening mechanisms like work hardening, precipitate, and grain …
JA El-Awady - Nature communications, 2015 - nature.com
Size-affected dislocation-mediated plasticity is important in a wide range of materials and technologies. Here we develop a generalized size-dependent dislocation-based model that …
In situ nanomechanical tests are carried out to investigate the tensile and compressive behavior of〈 001〉-oriented body-centered cubic (bcc) metals W, Mo, Ta and Nb with …
AT Jennings, MJ Burek, JR Greer - Physical review letters, 2010 - APS
We report results of uniaxial compression experiments on single-crystalline Cu nanopillars with nonzero initial dislocation densities produced without focused ion beam (FIB) …
AT Jennings, J Li, JR Greer - Acta Materialia, 2011 - Elsevier
We demonstrate strain-rate sensitivity emerging in single-crystalline Cu nanopillars with diameters ranging from 75 up to 500nm through uniaxial deformation experiments …
Cellular materials with periodic architectures have been extensively investigated over the past decade for their potential to provide multifunctional solutions for a variety of …
The development of xenon plasma focused ion-beam (Xe+ PFIB) milling technique enables site-specific sample preparation with milling rates several times larger than the conventional …
Nanotwinned-metals (nt-metals) offer superior mechanical (high ductility and strength) and electrical (low electromigration) properties compared to their nanocrystalline (nc) …
This review paper focuses on dislocations and plastic deformation in magnesium oxide crystals. MgO is an archetype ionic ceramic with refractory properties which is of interest in …