Structural features of plastic deformation in bulk metallic glasses

Journal Article · Mon Jan 19 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4906305· OSTI ID:22415131

Shakur Shahabi, H.; Stoica, M.; Kühn, U. ^[1]; Kaban, I.; Escher, B.; Eckert, J. ^[1]; Vaughan, G. B. M. ^[2]

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1. IFW Dresden, Institut für Komplexe Materialien, D-01069 Dresden (Germany)
2. European Synchrotron Radiation Facilities ESRF, BP220, 38043 Grenoble (France)

Spatially resolved strain maps of a plastically deformed bulk metallic glass (BMG) have been created by using high-energy X-ray diffraction. The results reveal that plastic deformation creates a spatially heterogeneous atomic arrangement, consisting of strong compressive and tensile strain fields. In addition, significant shear strain is introduced in the samples. The analysis of the eigenvalues and eigenvectors of the strain tensor indicates that considerable structural anisotropy occurs in both the magnitude and direction of the strain. These features are in contrast to the behavior observed in elastically deformed BMGs and represent a distinctive structural sign of plastic deformation in metallic glasses.

• OSTI ID: 22415131
• Journal Information: Applied Physics Letters, Vol. 106, Issue 3; Other Information: (c) 2015 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
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
EIGENVECTORS
METALLIC GLASSES
PLASTICITY
STRAINS
TENSORS
X-RAY DIFFRACTION