Computer simulations of the influence of atomic structure disorder on the hardness of Cu − Ag and Au − Ag alloys

Desta, Okbamichael; Bykova, M. I.; Timoshenko, Yury K.

doi:10.1088/1742-6596/1479/1/012027

Cited by 1 publication

(3 citation statements)

References 17 publications

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“…The total potential energy of a system of n interacting atoms in the framework of this model can be found in the article published by Desta O. G., Bykova M. I. and Timoshenko Yu. K. [11,12]. The Sutton-Chen potential parameters for the metals Au, Ag and Ni are given in table 1.…”

Section: Estimation Of Elastic Modulimentioning

confidence: 99%

“…Mechanical stability (structural stiffness) of a material determines how much a material deforms under load. For the cubic crystal, the mechanical stability criteria is [6]: 11 12…”

Section: Estimation Of Elastic Modulimentioning

confidence: 99%

“…There are a number of different empirical formulas for estimating intrinsic hardness of metals and alloys. Here we apply one of the formalisms followed Desta and his co-authors given as [11,12]…”

Section: Poisson's Ratio Intrinsic Hardness and Ductility Coefficientmentioning

confidence: 99%

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THE STUDY OF THE INFLUENCE OF CHEMICAL DISORDER ON MECHANICAL PROPERTIES OF BINARY ALLOYS OF THE TYPE AND (A = Au; Ag) USING COMPUTER MODELING

Desta¹,

Timoshenko²

2020

Voronezh Scientific-Technical Bulletin

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In this work, computer simulations of binary alloys of nickel with gold and silver were performed using the Sutton-Chen mathematical model. The simulation was conducted using the general lattice program (GULP) software package [9]. For the alloys, a simulation of ordered and chemically disordered structures were carried out. Elastic moduli, Poisson’s ratio, intrinsic hardness and ductility coefficient were estimated for both ordered and disordered structures. The influence of chemical disorder on the mechanical properties of the alloys was estimated. An attempt was made to assess the significance of the ratio of nickel in the alloys to their mechanical properties. The study found that the influence of chemical disorder on all studied mechanical properties of the metals is significant. In particular, the influence is much higher in shear modulus, on the elastic constant , intrinsic hardness and coefficient of ductility.

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Section: Estimation Of Elastic Modulimentioning

confidence: 99%

“…Mechanical stability (structural stiffness) of a material determines how much a material deforms under load. For the cubic crystal, the mechanical stability criteria is [6]: 11 12…”

Section: Estimation Of Elastic Modulimentioning

confidence: 99%