30Mar 2017

THEORETICAL STUDY OF THE EFFECT OF LINEAR DEFORMATION ON BULK MODULUS AND COMPRESSIBILITY OF METALS.

  • Department of Physics, Ekiti State University, Ado-Ekiti, Nigeria.
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The effects of deformation on the bulk modulus and compressibility of different elemental metals were computed and studied based on pseudopotential formalism. The electron density parameters of deformed metals under the application of different strains were obtained for different metals. The poison ratio relating the transversal compression to elongation in the direction of applied deformation for different elemental metals were computed using elastic moduli for homogeneous isotropic material and used in this work. The results obtained revealed that there is a good agreement between the computed and experimental value of the bulk modulus and compressibility of metals. There is high concentration of electron in the high density region than in the low density region for the bulk modulus and compressibility of metals these seems to suggest that the bulk modulus and compressibility of metals depend on the density of valence electron in metals. The bulk modulus of all the metals investigated decreases as deformation increases. These could be due to reduction in electron compressible rate, fracture density and increase in inter atomic distance between the electrons in the metals. The effect of deformation is more pronounced on the polyvalent metals than in alkaline metals these could be due to the high electronic concentration and high electronic energy level of the free atom in the alkaline metal. Compressibility increases with an increase in deformation for all the metals investigated. These could be due to an increase in the collision between the interacting electrons in metals which forces the compressibility of the electron in metals to increase as deformation increases.

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[Adesakin G. E. (2017); THEORETICAL STUDY OF THE EFFECT OF LINEAR DEFORMATION ON BULK MODULUS AND COMPRESSIBILITY OF METALS. Int. J. of Adv. Res. 5 (Mar). 1539-1548] (ISSN 2320-5407). www.journalijar.com

Adesakin G. E.
Department of Physics, Ekiti State University, Ado-Ekiti, Nigeria

DOI:

Article DOI: 10.21474/IJAR01/3663      
DOI URL: https://dx.doi.org/10.21474/IJAR01/3663

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