Short-to-Medium-Range Order and Atomic Packing in Zr48Cu36Ag8Al8 Bulk Metallic Glass
- Shandong Jianzhu Univ., Jinan (China)
- Shandong Univ., Jinan (China)
- Univ. of Science and Technology Beijing (China)
Due to its excellent glass-forming ability (GFA), the Zr48Cu36Ag8Al8 bulk metallic glass (BMG) is of great importance in glass transition investigations and new materials development. However, due to the lack of detailed structural information, the local structure and atomic packing of this alloy is still unknown. In this work, synchrotron measurement and reverse Monte Carlo simulation are performed on the atomic configuration of a Zr-based bulk metallic glass. The local structure is characterized in terms of bond pairs and Voronoi tessellation. It is found that there are mainly two types of bond pairs in the configuration, as the body-centered cubic (bcc)-type and icosahedral (ico)-type bond pairs. On the other hand, the main polyhedra in the configuration are icosahedra and the bcc structure. That is, the bcc-type bond pairs, together with the ico-type bond pairs, form the bcc polyhedra, introducing the distortion in bcc clusters in short range. However, in the medium range, the atoms formed linear or planar structures, other than the tridimensional clusters. That is, the medium-range order in glass is of 1D or 2D structure, suggesting the imperfect ordered packing feature.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- 51101093
- OSTI ID:
- 1329430
- Journal Information:
- Metals, Vol. 6, Issue 10; ISSN 2075-4701
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Web of Science
Structural properties of medium-range order in CuNiZr alloy
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journal | October 2017 |
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