Özet:

In this study, the effect of tensile deformation applied along the [100] direction at different temperatures and strain rates on the mechanical properties of Nb nanowire was investigated using the Molecular Dynamics (MD) simulation method. Under uniaxial tensile deformation applied to the model system, the stressstrain curve, modulus of elasticity, yielding strength, position ratio and the resulting plastic deformation were determined. The forces between atoms were obtained by the Embedded Atom Method (EAM), which includes many-body interactions. It was determined that temperature and strain rate were effective on the mechanical behavior of Nb nanowire. It was determined that the modulus of elasticity was independent of the strain rate at low temperatures, but decreased with the increase in temperature, and the yielding strength decreased with increasing temperature and decreasing strain rate. Using the Adaptive Common Neighbor Analysis (aCNA) method, it was observed that the movement of twinnings corresponding to plastic deformation and, as a result, the reorientation of regional crystal structures.

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