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Simulation of growth of Ni-Zr interfacial amorphous regions under nonequilibrium conditions

Mura, Pasquale and Demontis, Pierfranco and Suffritti, Giuseppe Baldovino and Rosato, Vittorio and Vittori Antisari, Marco (1994) Simulation of growth of Ni-Zr interfacial amorphous regions under nonequilibrium conditions. Physical Review. B, Vol. 50 (5), p. 2850-2857. eISSN 1550-235X. Article.

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DOI: 10.1103/PhysRevB.50.2850

Abstract

We have simulated the response of an interfacial amorphous region formed between nickel and zirconium lattices upon temperature increase or the application of uniaxial load by means of molecular-dynamics simulation of a model system based on an n-body potential. The behavior of the amorphous region has been investigated as a function of the load intensity and duration. The system reacts upon uniaxial load application with the growth of the amorphous interface. This has been related to the structural change occurring in the glassy region in the form of a density variation consequent to the introduction of excess free volume. These findings are qualitatively consistent with the current hypothesis invoked to explain diffusion and growth of interfacial amorphous regions formed upon load application on bulk diffusion couples.

Item Type:Article
ID Code:357
Status:Published
Refereed:Yes
Uncontrolled Keywords:Ni-Zr growth, molecular dynamics, amorphous region
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:The American Physical Society
eISSN:1550-235X
Publisher Policy:Depositato in conformità con la politica di copyright dell'Editore
Deposited On:18 Aug 2009 10:02

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