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Microscale Thermoplastic Forming of Bulk Metallic Glasses: Numerical Simulation and Experiments

Published online by Cambridge University Press:  01 February 2011

David Henann  and
Lallit Anand
David Henann
Affiliation:
dhenann@mit.edu, MIT, Mechanical Engineering, 5-030, 77 Massachusetts Ave., Cambridge, MA, 02139, United States
Lallit Anand
Affiliation:
anand@mit.edu, MIT, Mechanical Engineering, Cambridge, MA, 02139, United States
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Abstract

An extremely promising microscale processing method for bulk metallic glasses called thermoplastic forming has emerged in recent years. However, most of the recent experimental thermoplastic forming studies have been conducted by trial-and-error. In this paper, we use the large-deformation constitutive theory of Henann and Anand [1] as a numerical simulation tool for the design of a micro-hot-embossing process. This numerical simulation capability is used to determine appropriate processing parameters in order to carry out a successful micron-scale hot-embossing operation on the metallic glass Zr41.2Ti13.8Cu12.5Ni10Be22.5 (Vitreloy-1). By carrying out a corresponding physical experiment, we demonstrate that micron-scale features in Vitreloy-1 may be accurately replicated under the processing conditions determined by use of the numerical simulation capability.

Keywords

simulationamorphousmetal
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1048: Symposium Z – Bulk Metallic Glasses–2007 , 2007 , 1048-Z04-05
Copyright
Copyright © Materials Research Society 2008

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References

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