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The dynamic compressive behavior of beryllium bearing bulk metallic glasses

Bruck, H. A. and Rosakis, A. J. and Johnson, W. L. (1996) The dynamic compressive behavior of beryllium bearing bulk metallic glasses. Journal of Materials Research, 11 (2). pp. 503-511. ISSN 0884-2914. http://resolver.caltech.edu/CaltechAUTHORS:BRUjmr96

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Abstract

In 1993, a new beryllium bearing bulk metallic glass with the nominal composition of Zr41.25Ti13.75Cu12.5Ni10Be22.5 was discovered at Caltech. This metallic glass can be cast as cylindrical rods as large as 16 mm in diameter, which permitted specimens to be fabricated with geometries suitable for dynamic testing. For the first time, the dynamic compressive yield behavior of a metallic glass was characterized at strain rates of 10^2 to 10^4/s by using the split Hopkinson pressure bar. A high-speed infrared thermal detector was also used to determine if adiabatic heating occurred during dynamic deformation of the metallic glass. From these tests it appears that the yield stress of the metallic glass is insensitive to strain rate and no adiabatic heating occurs before yielding.


Item Type:Article
Additional Information:© 1996, Materials Research Society (Received 14 March 1995; accepted 26 October 1995)
Record Number:CaltechAUTHORS:BRUjmr96
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BRUjmr96
Alternative URL:http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=2333&DID=95424
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3974
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:20 Jul 2006
Last Modified:26 Dec 2012 08:57

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