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Abrasive waterjet machining of three-dimensional structures from bulk metallic glasses and comparison with other techniques

Published online by Cambridge University Press:  29 February 2012

Victor Wessels ,
Anton Grigoryev ,
Claus Dold ,
Carl-Frederik Wyen ,
Raoul Roth ,
Eduardo Weingärtner ,
Frank Pude ,
Konrad Wegener  and
Jörg F. Löffler
Victor Wessels
Affiliation:
Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
Anton Grigoryev
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland; and Institute of Machine Tools and Manufacturing (IWF), ETH Zurich, 8092 Zurich, Switzerland
Claus Dold
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland
Carl-Frederik Wyen
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland
Raoul Roth
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland
Eduardo Weingärtner
Affiliation:
Institute of Machine Tools and Manufacturing (IWF), ETH Zurich, 8092 Zurich, Switzerland
Frank Pude
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland
Konrad Wegener
Affiliation:
INSPIRE AG, 8092 Zurich, Switzerland; and Institute of Machine Tools and Manufacturing (IWF), ETH Zurich, 8092 Zurich, Switzerland
Jörg F. Löffler*
Affiliation:
Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
*
a)Address all correspondence to this author. e-mail: joerg.loeffler@mat.ethz.ch
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Abstract

Bulk metallic glasses (BMGs) are a promising class of engineering materials, but they can be difficult to machine due to high hardness and a metastable structure. Crystallization due to machining can have negative effects, such as a decreased load-bearing capacity of fabricated parts, and thus should be avoided. Here, a Zr-based BMG was machined using abrasive waterjet (AWJ), electrical discharge, ns-pulsed laser engraving, and conventional dry-milling techniques. Characterization of the processed material indicated that AWJ preserves the amorphous phase and provides the combination of speed and flexibility required to rapidly fabricate small three-dimensional parts, while the other techniques did not achieve these goals. As proof-of-principle, a screw, similar to an orthopedic implant, was rapidly machined from the BMG using AWJ.

Keywords

AmorphousAlloyMachining
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 8 , 28 April 2012 , pp. 1187 - 1192
Copyright
Copyright © Materials Research Society 2012

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References

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