Diyala Journal For Pure Science DJPS

P- ISSN:2222-8373, E-ISSN:2518-9255

Volume 13, Issue 3, Part 1 , July. 2017

Computer simulation of the fine structures in A-B alloy

Abdul halim Kh.Ali and A. A. Al- Rubaiee

Year: 2017, Volume: 13, Issue: 3, Part: 1

Pages: 11-20, DOI:  http://dx.doi.org/10.24237/djps.1303.188B

Language: English

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Abstract    

Computer simulation was used to study the fine structures of 2D- square lattice. The temperatures used in the experiment was below the T_C = 770k. Within this range of temperatures, the 2D- square lattice through a chain of successive non- equilibrium configurations which is achieved through the diffusion of atoms into vacant places of lattice .The equilibrium state has been obtained by averaging a number of runs (15-16) million time steps. In equilibrium state of lattice the results showed the existence of different kinds of the fine structures (microdomains, clusters, segregations and antiphase domain boundaries).  At a temperatures above T_C, clusters and segregations appear and the concentration of atoms in clusters was 0.5 and in segregation 0.1. Also we noticed the changes in microdomains sizes with temperatures.

Keywords: computer simulation, alloy, diffusion, ordering (disordering process), structure, antiphase domain boundary, microdomain, clusters, segregation.