Abstract
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.
Highlights
Metals have been used as construction materials due to their strength
Some metals and alloys are used as high temperature materials in industries as gas turbines and heat exchangers
Nickel based alloys are used as gas turbine engines, space vehicles, nuclear reactors and many more [1]
Summary
Metals have been used as construction materials due to their strength. Some metals and alloys are used as high temperature materials in industries as gas turbines and heat exchangers. Nickel based alloys are used as gas turbine engines, space vehicles, nuclear reactors and many more [1]. Nickel is a corrosion resistant metal [2]. The Nickel based alloys are frequently used as in condensers and heat exchangers due to their resistance to corrosion and stress-corrosion cracking [3]. An attempt to enhance the specific properties has been done by alloying metals for many years. Nickel could be alloyed with different metals to increase their resistance to corrosion
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