Method of calculation and calculated values parameters elementary nanocrystals liquid metals at melting temperature are given. It has been shown that radii from 2 nm to 12 nm, the number atoms in each nanocrystal varies 2000 100000. This provides with a high solidification rate explains abnormally diffusion coefficient compared solid metals.

Two phenomena will be considered. Phase transformations (PTs) and chemical reactions (CRs) under compression and shear of materials in rotational diamond anvil cell (RDAC) represent examples of apparent effects of plastic shear. We recently predicted the new phenomenon that crystal-crystal and crystalamorphous PTs can occur through virtual melting (VM) significantly below (> 1000K!) the melting...

The melting and crystallization of Al50Ni50 are studied by means of molecular dynamics computer simulations, using a potential of the embedded atom type to model the interactions between the particles. Systems in a slab geometry are simulated where the B2 phase of AlNi in the middle of an elongated simulation box is separated by two planar interfaces from the liquid phase, thereby considering t...