Affiliation:
1. Department of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract
The melting behavior of Ni 3 Al alloys in one, two and three dimensions were studied by adopting molecular dynamics simulations with many-body interatomic potentials. The results of simulation show that melting temperatures of the Ni 3 Al nanowires and nanofilms rise with the increase of the size of nanostructures to a saturation value, and finally reach a proximate melting temperature of bulk Ni 3 Al . The results also reveal that the nanowires and nanofilms begin to melt at the surface, and then it rapidly extends to the interior of the nanostructures as the temperature increase. The large surface-to-volume ratio of the nanowires and nanofilms may account for the decreased melting temperature observed in the present simulations.
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics