The dynamic compressive behavior of beryllium bearing bulk metallic glasses

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1996.0060· OSTI ID:278658

Bruck, H A ^[1]; Rosakis, A J ^[2]; Johnson, W L ^[3]

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1. Idaho National Engineering Labs, Mail Stop 2218, Idaho Falls, Idaho 83415-2218 (United States)
2. Departments of Aeronautics, California Institute of Technology, Mail Stop 105-50, Pasadena, California 91125 (United States)
3. Department of Materials Science, California Institute of Technology, Mail Stop 105-50, Pasadena, California, 91125 (United States)

In 1993, a new beryllium bearing bulk metallic glass with the nominal composition of Zr{sub 41.25}Ti{sub 13.75}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5} 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{sup 2} to 10{sup 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. {copyright} {ital 1996 Materials Research Society.}

• OSTI ID: 278658
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 2 Vol. 11; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADIABATIC PROCESSES
BERYLLIUM ALLOYS
COPPER ALLOYS
HEATING
MECHANICAL PROPERTIES
METALLIC GLASSES
NICKEL ALLOYS
STRAIN RATE
TITANIUM ALLOYS
ZIRCONIUM ALLOYS