Formation of multiply twinned nanoparticles of pure (Al, Cu, Ni) metals during crystallization: Results of molecular dynamics simulation

Structures of simulated metals (Al, Cu, Ni) obtained in result of isothermal annealing after quick cooling to certain temperatures are studied in detail. Obtained large enough structures heave a core skeleton from hcp-planes in the form of icosahedron that already are named “Ih-fractal” (tetrahedra with internal fcc structure are divided one from another by twinning hcp-planes). Rows from elementary decahedra in structures of hcp-planes give the basis of new 60 twinning planes for forming new sectors at growing of such formation. New rows from decahedra are appearing in the places of intersections of the secondary twinning planes, and a new family of twinning planes is forming.