Multishell structure formation in Ni nanowire under uniaxial strain along 〈0 0 1〉 crystallographic direction: A molecular dynamics simulation

Molecular dynamics simulations based upon embedded-atom-method potential are employed to explore the fracture behavior of Ni nanowire along 〈0 0 1〉 crystallographic direction at temperature of 300 K. We find the formation of (5,5) multishell structure (MS), which is transformed from (6,5) MS at the necking region of nanowire under the strain rate of 0.02%ps−1. A reorientation transformation from 〈0 0 1〉 to 〈1 1 0〉 is first detected before formation of (6,5) MS. The formed (5,5) MS is more stable and can be tensioned longer as lower strain rate is loaded.