Abstract
Abstract The mechanical properties and deformation mechanism of perfect and linear surface defect Ni Nanowires (∼925876 atoms) are investigated using molecular dynamics simulations. The linear surface defects are oriented at 0°, 45°, and 90° to the loading direction. EAM potential is used to model the interactions between Ni atoms. The tensile tests are carried out at temperature of 10 K and strain rate of 109 s-1. The results show that the surface defect oriented at 45° significantly lowers the yields stress (∼ 25%). The Fractographs displays shear type of fracture in perfect, horizontal and 45° surface defect Ni NW and for vertical defect NW, the plastic strain is very less indicating brittle fracture.
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