Mechanical Properties of Twinned Copper Nanowires Under Uniaxial Compression

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2018 by IJETT Journal
Volume-57 Number-1
Year of Publication : 2018
Authors : Md. Ferdous Alam, Muhammad Rubayat Bin Shahadat


Md. Ferdous Alam, Muhammad Rubayat Bin Shahadat "Mechanical Properties of Twinned Copper Nanowires Under Uniaxial Compression", International Journal of Engineering Trends and Technology (IJETT), V57(1),1-5 March 2018. ISSN:2231-5381. published by seventh sense research group

Molecular dynamics (MD) Simulation has been employed to study the compression behaviour of twinned copper nanowires at fixed strain rate of 1 x 10 10 s-1. FCC structure of copper nanowires are subjected to uniaxial compression at 0.1K temperature. Copper nanowires of varying diameters have been chosen (2.88 nm and 5.76 nm). Embedded Atom Model (EAM) potentials have been used to calculate interatomic potentials among the atoms. The compressive properties and deformation modes have been observed and discussed. The dislocations criteria and change of atomic structures have also been analysed. Two types of twin boundaries have been inserted into the nanowires to investigate their effects. It has been found that nanowires with lower twin boundary spacing show higher yield strength and seemingly different deformation criteria.

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Twin boundary, nanowire, dislocations, aspect ratio