Existence of Local Network Structure in Binary Amorphous Metals and its Contribution to Elastic Properties

Masato Wakeda; Yoji Shibutani

doi:10.4028/www.scientific.net/AMR.89-91.604

Paper Titles

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FEM Modelling of Recrystallization Behaviour for Near-Alpha Ti Alloy IMI834
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Development of a Plasma Process for Microfluidic Devices in the Prospect of Cell Attachment
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Existence of Local Network Structure in Binary Amorphous Metals and its Contribution to Elastic Properties
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Evolution of Residual Stress in Cu-Line Patterns with Different Linewidth
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Material Constitutive Behaviour and Microstructure Study on Aluminium Alloys for Friction Stir Welding
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Effects of Elastic Behaviour of Dies and Servo Press Machine on Deep Drawing Process
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Ultrasonic Welding Mild Steel Sheet to Al-Mg Alloy Sheet
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Existence of Local Network Structure in Binary Amorphous Metals and its Contribution to Elastic Properties

Abstract:

The paper focuses on the characteristic local network structure of icosahedra observed in the relaxed amorphous metals and its contribution to their elastic properties. Using molecular dynamics method, CuxZr100-x binary amorphous models are constructed by rapidly quenching process from liquid. Voronoi polyhedron analyses expose the existence of the medium-range local network structure composed of inter-penetrating icosahedra. It is found that the globally averaged shear modulus obtained from the atomistically defined elastic moduli decreases with increasing free volume content in the condensed matter. The contribution of the densely packed icosahedral cluster with higher elastic rigidity to the global elastic modulus is discussed.