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Metals 2015, 5(4), 2048-2057; doi:10.3390/met5042048

How Can Synchrotron Radiation Techniques Be Applied for Detecting Microstructures in Amorphous Alloys?

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Author to whom correspondence should be addressed.
Academic Editor: Klaus-Dieter Liss
Received: 23 September 2015 / Accepted: 2 November 2015 / Published: 4 November 2015
(This article belongs to the Special Issue Metals Challenged by Neutron and Synchrotron Radiation)
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Abstract

In this work, how synchrotron radiation techniques can be applied for detecting the microstructure in metallic glass (MG) is studied. The unit cells are the basic structural units in crystals, though it has been suggested that the co-existence of various clusters may be the universal structural feature in MG. Therefore, it is a challenge to detect microstructures of MG even at the short-range scale by directly using synchrotron radiation techniques, such as X-ray diffraction and X-ray absorption methods. Here, a feasible scheme is developed where some state-of-the-art synchrotron radiation-based experiments can be combined with simulations to investigate the microstructure in MG. By studying a typical MG composition (Zr70Pd30), it is found that various clusters do co-exist in its microstructure, and icosahedral-like clusters are the popular structural units. This is the structural origin where there is precipitation of an icosahedral quasicrystalline phase prior to phase transformation from glass to crystal when heating Zr70Pd30 MG. View Full-Text
Keywords: metallic glasses; extended X-ray absorption fine structure; X-ray diffraction; reverse Monte Carlo simulation; microstructure metallic glasses; extended X-ray absorption fine structure; X-ray diffraction; reverse Monte Carlo simulation; microstructure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Guo, G.-Q.; Wu, S.-Y.; Luo, S.; Yang, L. How Can Synchrotron Radiation Techniques Be Applied for Detecting Microstructures in Amorphous Alloys? Metals 2015, 5, 2048-2057.

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