Two-zone heterogeneous structure within shear bands of a bulk metallic glass

Journal Article · Mon Oct 21 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4826117· OSTI ID:22217893

Shao, Yang; Yao, Kefu; Liu, Xue ^[1]; Li, Mo ^[1]

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1. School of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)

Shear bands, the main plastic strain carrier in metallic glasses, are severely deformed regions often considered as disordered and featureless. Here we report the observations of a sandwich-like heterogeneous structure inside shear bands in Pd{sub 40.5}Ni{sub 40.5}P{sub 19} metallic glass sample after plastic deformation by high-resolution transmission electron microscopy. The experimental results suggest a two-step plastic deformation mechanism with corresponding microstructure evolution at atomic scale, which may intimately connected to the stability of the shear band propagation and the overall plastic deformability.

• OSTI ID: 22217893
• Journal Information: Applied Physics Letters, Vol. 103, Issue 17; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARRIERS
DEFORMATION
EVOLUTION
METALLIC GLASSES
MICROSTRUCTURE
PLASTICITY
PLASTICS
RESOLUTION
SHEAR
STABILITY
STRAINS
TRANSMISSION ELECTRON MICROSCOPY
ZONES