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High-Strain-Rate Dynamic Mechanical Properties of a W-Reinforced Zr-Based Bulk Metallic Glass Composite

Published online by Cambridge University Press:  26 February 2011

Morgana Martin ,
Naresh N. Thadhani ,
Laszlo J. Kecskes  and
Robert J. Dowding
Morgana Martin
Affiliation:
gtg477p@mail.gatech.edu, Georgia Institute of Technology, School of Materials Science and Engineering, 771 Ferst Dr. NW, Atlanta, GA, 30332, United States, 404-385-6765
Naresh N. Thadhani
Affiliation:
naresh.thadhani@mse.gatech.edu, Georgia Institute of Technology, School of Materials Science and Engineering, United States
Laszlo J. Kecskes
Affiliation:
kecskes@arl.army.mil, U.S. Army Research Laboratory, Weapoons and Materials Directorate, United States
Robert J. Dowding
Affiliation:
rdowding@arl.army.mil, U.S. Army Research Laboratory, Weapons and Materials Directorate, United States
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Abstract

The structural/mechanical behavior of zirconium-based (Vitreloy106) bulk metallic glass reinforced with tungsten particles is evaluated using elastic and plastic property measurements via static and dynamic compression tests performed on rod shaped samples. Anvil-on-rod impact tests combined with high-speed digital photography and velocity interferometry are used to obtain qualitative and quantitative information about the transient deformation and failure response of the composites. The deformation and failure mechanisms of recovered impacted specimens are also characterized and correlated with their structure and tungsten phase distribution. The results of these experiments and initial attempts at validating constitutive equations based on homogeneous/inhomogeneous plastic/viscous flow in glassy and glassy-crystalline composites will be presented.

Keywords

amorphoussimulationstrength
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 903: Symposium Z – Amorphous and Nanocrystalline Metals for Structural Applications , 2005 , 0903-Z18-03
Copyright
Copyright © Materials Research Society 2006

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