Understanding the deformation mechanism of individual phases of a ZrTi-based bulk metallic glass matrix composite using in situ diffraction and imaging methods

Journal Article · Mon Jan 20 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4863095· OSTI ID:22280580

Huang, Yongjiang ^[1]; Khong, J. C.; Connolley, Thomas ^[2]

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1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin (China)
2. I12 JEEP Beamline, Diamond Light Source, Oxfordshire (United Kingdom)

The plasticity of a ZrTi-based bulk metallic glass composite consisting of glassy matrix and crystalline dendritic phase was studied in-situ under identical tensile loading conditions using scanning electron microscopy and synchrotron X-ray diffraction. A generic procedure was developed to separate the diffraction information of the crystalline phases away from that of the matrix and to precisely calculate the microscopic strains of the two phases at different macroscopic load steps. In this way, the time-evolved quantitative links between shear bands nucleation/propagation and the corresponding microscopic stress fields around them are established, providing more quantitative understanding on (1) how the shear bands are driven by the local stress field, and (2) the critical stresses required for the shear bands to nucleate in the crystalline phase, propagate through the crystalline/matrix interface, and finally into the matrix.

• OSTI ID: 22280580
• Journal Information: Applied Physics Letters, Vol. 104, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
DEFORMATION
DENDRITES
INTERFACES
MATRIX MATERIALS
METALLIC GLASSES
NUCLEATION
PLASTICITY
SCANNING ELECTRON MICROSCOPY
SHEAR PROPERTIES
STRAINS
STRESSES
SYNCHROTRON RADIATION
TITANIUM ALLOYS
X-RAY DIFFRACTION
ZIRCONIUM ALLOYS