Unusual room temperature ductility of a Zr-based bulk metallic glass containing nanoparticles

Journal Article · Mon Jun 04 00:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2746071· OSTI ID:20971951

Qiang, J B; Zhang, W; Xie, G Q; Inoue, A ^[1]

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1. Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577 (Japan)

Highly ductile Zr{sub 65}Al{sub 7.5}Cu{sub 27.5} bulk metallic glass (BMG) containing nanometer scaled fcc phase was obtained by copper mold casting. Room temperature compression tests revealed superior mechanical properties of the alloy: yielding stress of 1670 MPa, Young's modulus of 90 GPa, elastic strain of 2%, and especially a remarkable plasticity of over 50%. The marginal BMG is a useful model system to examine the nanocrystal coalescence model and the shear-transformation-zone model proposed for large scale plastic deformations of metallic glasses.

• OSTI ID: 20971951
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 23 Vol. 90; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CASTING
CASTING MOLDS
CASTINGS
COALESCENCE
COMPRESSION
COPPER ALLOYS
DUCTILITY
FCC LATTICES
METALLIC GLASSES
MOLDING
NANOSTRUCTURES
PARTICLES
PLASTICITY
PRESSURE RANGE GIGA PA
STRESSES
TEMPERATURE RANGE 0273-0400 K
YIELD STRENGTH
YOUNG MODULUS
ZIRCONIUM ALLOYS