Effect of size, temperature and strain rate on deformation behavior of nickel nanowires: A molecular dynamics simulation study

Abstract

Metallic Nanowires have attracted considerable attention due to their unique properties and have been evolved as a potential field of research in recent years. The recent discovery of new metallic nanomaterials makes it possible to produce nanometarials in bulk shapes. Bulk metallic nanowires provide a promising future to revolutionize the field of structural materials with combinations of strength, elastic limit, toughness, wear resistance and corrosion resistance. Since the fabrication and deformation studies of metallic nanowires are sometimes practically impossible in laboratory conditions, so computational approaches are extensively used to explore various properties and behaviour of metallic nanowires. This project work presents a molecular dynamics simulation study on deformation behaviour of Nickel nanowire where the effect of parameters like sample-size, strain rate and temperature on the tensile deformation behaviour have been thoroughly studied. Computational methods to create metallic nanowire models and further tensile deformation have been mentioned. Stress-strain plots were drawn at same strain rate for different sizes of nanowire models, at different temperatures for particular strain rate and size and at different strain rates for a particular size and temperature. Reasons for getting different stress-stress curves and mechanical properties for different conditions have also been discussed.