The mechanical responses of monatomic tantalum metallic glass nanowires with the width varying from 4 to 22 nm to uniaxial tension and compression loads have been studied using the molecular dynamics simulations, for investigating the size impact on their mechanical properties. The simulations demonstrate that, at the considered temperatures of 50 and 298 K, the elastic moduli and the compressive strength of tantalum metallic glass nanowires are both increasing with the increase of nanowire width, whereas no obvious size dependence of the tensile strength of metallic glass nanowires is observed. It is shown that the surface and internal stress states can be used for explaining the relation between mechanical properties of monatomic tantalum metallic glass nanowires and the wire diameter.

使用分子动力学模拟研究了宽度在4到22 nm之间的单原子钽金属玻璃纳米线对单轴张力和压缩负载的机械响应，以研究尺寸对其机械性能的影响。模拟表明，在考虑的50和298 K温度下，钽金属玻璃纳米线的弹性模量和抗压强度均随纳米线宽度的增加而增加，而金属玻璃纳米线的抗拉强度没有明显的尺寸依赖性。被观察到。结果表明，表面和内应力状态可以用来解释单原子钽金属玻璃纳米线的力学性能与线径之间的关系。