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.

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.

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), Article 031912. https://doi.org/10.1063/1.4863095

• Journal Article Type: Article
• Acceptance Date: Jan 1, 2014
• Publication Date: Jan 20, 2014
• Deposit Date: May 12, 2016
• Publicly Available Date: May 12, 2016
• Journal: Applied physics letters
• Print ISSN: 0003-6951
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 104
• Issue: 3
• Article Number: 031912
• DOI: https://doi.org/10.1063/1.4863095
• Keywords: X-ray diffraction, Plasticity, Shear deformation, Scanning electron microscopy, Amorphous metals
• Public URL: https://hull-repository.worktribe.com/output/438008
• 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.
• Contract Date: May 12, 2016