(2013) Microstruc-tures and strengthening mechanisms of Cu/Ni/W nanolayered composites. Notice: Changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published source: Abstract Cu/Ni/W nanolayered composites with individual layer thickness ranging from 5 nm to 3...

Nanocrystalline materials have experienced a great deal of attention in recent years, largely due to their impressive array of physical properties. In particular, nanocrystalline mechanical behavior has been of interest, as incredible strengths are predicted when grain size is reduced to the nanometer range. The vast majority of research to this point has focused on quantifying and understandin...

Chemical strengthening via ion exchange, thermal tempering, and lamination are proven techniques for the strengthening of oxide glasses. For each of these techniques, the strengthening mechanism is conventionally ascribed to the linear superposition of the compressive stress (CS) profile on the glass surface. However, in this work, we use molecular dynamics simulations to reveal the underlying ...

In the present study, we perform molecular dynamic simulations to investigate the compression response and atomistic deformation mechanisms of twinned nanospheres. The relationship between load and compression depth is calculated for various twin spacing and loading directions. Then, the overall elastic properties and the underlying plastic deformation mechanisms are illuminated. Twin boundarie...

A loading-unloading-reloading strategy via atomistic simulations is proposed to reveal the strengthening mechanisms of rhenium in nickel-based superalloys at ambient temperature. Simulations reproduce experimentally observed increased flow stress with addition rhenium. Besides usual solid solution strengthening, two novel are uncovered. One that facilitates dislocation nucleation and, thus, inc...

An effect of tempforming on the microstructure, carbide precipitation, and strengthening mechanisms high-strength low-alloyed steel has been analyzed. The quenched was subjected to 1 h tempering at a temperature 873 K, 923 or 973 K followed by plate rolling same temperature. Tempforming resulted in formation an ultrafine grained lamellar-type microstructure with finely dispersed carbides (Nb,V)...