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

Huang, Yongjiang; Khong, J. C.; Connolley, Thomas; Mi, J.

Authors

Yongjiang Huang

J. C. Khong

Thomas Connolley



Abstract

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.

Journal Article Type Article
Publication Date Jan 20, 2014
Journal Applied physics letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher AIP Publishing
Peer Reviewed Peer Reviewed
Volume 104
Issue 3
Article Number 031912
APA6 Citation Huang, Y., Khong, J. C., Connolley, T., & Mi, J. (2014). Understanding the deformation mechanism of individual phases of a ZrTi-based bulk metallic glass matrix composite using in situ diffraction and imaging methods. Applied physics letters, 104(3), https://doi.org/10.1063/1.4863095
DOI https://doi.org/10.1063/1.4863095
Keywords X-ray diffraction, Plasticity, Shear deformation, Scanning electron microscopy, Amorphous metals
Publisher URL http://scitation.aip.org/content/aip/journal/apl/104/3/10.1063/1.4863095
Additional Information This is the Version of Record of an article published in Applied physics letters, 2014, v.104. Full citation: Understanding the deformation mechanism of individual phases of a ZrTi-based bulk metallic glass matrix composite using in situ diffraction and imaging methods Huang, Yongjiang and Khong, J. C. and Connolley, Thomas and Mi, J., Applied Physics Letters, 104, 031912 (2014), DOI:http://dx.doi.org/10.1063/1.4863095. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.

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