http://link.springer.com/10.1007/978-981-10-6855-3_12-1 Abstract: Nanopolycrystals are polycrystalline metals with an average grain size below 100 nm and exhibit extraordinary strength values. In contrast to the coarse-grained polycrystals, the confinement by grain boundaries of the plastic deformation in the grains approaches limits, where the conventional theories break down. In the grain size regime 10–20 nm, molecular dynamics simulations play a […]
blogs.unimelb.edu.au/materials-mechanics-modelling/2019/10/22/molecular-dynamics-simulations-of-nanopolycrystals
https://linkinghub.elsevier.com/retrieve/pii/S1359645417309023 Abstract: Molecular dynamics simulations of transient stress drops have been carried out in different regimes on a nanocrystalline Aluminum sample with average grain size of 12 nm. Besides confirming the interpretation of experimental results obtained during in situ X-ray diffraction, the creep simulations performed at 2 or 3 orders of magnitude lower strain rates […]
blogs.unimelb.edu.au/materials-mechanics-modelling/2018/10/22/dislocation-interactions-at-reduced-strain-rates-in-atomistic-simulations-of-nanocrystalline-al