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Injection molding metallic glass

Wiest, Aaron and Harmon, John S. and Demetriou, Marios D. and Conner, R. Dale and Johnson, William L. (2009) Injection molding metallic glass. Scripta Materialia, 60 (3). pp. 160-163. ISSN 1359-6462.

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Advances in alloy development have produced the Zr_(35)Ti_(30)Be_(27.5)Cu_(7.5) alloy with a crystallization–glass transition temperature, ΔT, of 165 °C. This alloy’s large supercooled liquid region provides the longest processing times and lowest processing viscosities of any metallic glass and was injection molded using tooling based on plastic injection molding technology. Injection-molded beams and die-cast beams were tested in three-point bending. The average modulus of rupture (MOR) was found to be similar, while injection-molded beams had a smaller standard deviation in MOR.

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Additional Information:© 2008 Acta Materialia Inc. Received 5 September 2008; revised 23 September 2008; accepted 24 September 2008. Available online 7 October 2008. Special thanks to Doug Hofmann, Rebecca Stevens, Glenn Garrett, Jin-Yoo Suh and Joe Schramm for valuable discussion and heroic help quenching the 420 °C massive mold.
Subject Keywords:Metallic glasses; Bulk amorphous materials; Thermoplastic forming; Injection molding
Issue or Number:3
Record Number:CaltechAUTHORS:20090918-114020129
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15970
Deposited By: Tony Diaz
Deposited On:22 Sep 2009 20:49
Last Modified:03 Oct 2019 01:05

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