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

作者：Wessels Victor; Grigoryev Anton; Dold Claus; Wyen Carl Frederik; Roth Raoul; Weingaertner Eduardo; Pude Frank; Wegener Konrad; Loeffler Joerg F

来源：Journal of Materials Research, 2012, 27(8): 1187-1192.

DOI：10.1557/jmr.2012.36

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.

• 出版日期2012-4