Nano Quasicrystal Formation and Local Atomic Structure in Zr––Pd and Zr––Pt Binary Metallic Glasses

Authors

Junji Saida, Center for Interdisciplinary Research
Takashi Sanada, Research Department, Nissan ARC Ltd
Shigeo Sato, Institute for Materials Research
Muneyuki Imafuku, Materials Characterization Center, Nippon Steel Technoresearch Corp.
Chunfei Li, Center for Electron Microscopy and Nanofabrication
Akihisa Inoue, Tohoku University

Sponsor

This work is supported by Grant-in-Aid of the Ministry of Education, Sports, Culture, Science and Technology, Japan, Scientific Research (B), Priority Area on “Materials Science of Bulk Metallic Glasses” and “Science and Technology of Microwave- Induced, Thermally Non-Equilibrium Reaction Fields”. It is also supported by Japan Science Promotion Society (JSPS), “Asian Core Program”.

Published In

Zeitschrift für Kristallographie

Document Type

Article

Publication Date

2008

Subjects

Metallic glasses -- Structure, Nanostructures -- Research, Quasicrystals, Nanostructured materials, Zirconium alloys

Abstract

Formation of the nanoscale icosahedral quasicrystalline phase (I-phase) in the melt-spun Zr₇₀Pd₃₀ and Zr₈₀Pt₂₀ binary metallic glasses were reported. Local atomic structure in the glassy and quasicrystal (QC)-formed states were also analyzed by XRD and EXAFS measurements in order to investigate the formation mechanism of QC phase. The distorted icosahedral-like local structure can be identified around Zr atom in the Zr₇₀Pd₃₀ metallic glass. In the QC formation process, a change of local environment around Zr is detected, in which the approximately one Zr atom substitutes for one Pd atom. In contrast, since the local environment around Pt atom is remaining during the QC precipitation, it is suggested that the stable icosahedral local structure is mainly formed around a center Pt atom in the glassy state in Zr₈₀Pt₂₀. We also found that the local environment around Zr atom significantly changes during the quasicrystallization in the alloy. These results differ from those in the Zr₇₀Pd₃₀ metallic glass.

Rights

© by Oldenbourg Wissenschaftsverlag, Munchen.

Description

Originally appeared in Zeitschrift für Kristallographie, Volume 223 Issue 11-12, published by Oldenbourg Wissenschaftsverlag, Munchen. May be accessed at http;//doi.org/10.1524/zkri.2008.1041.

DOI

10.1524/zkri.2008.1041

Persistent Identifier

https://archives.pdx.edu/ds/psu/36024

Citation Details

Saida, J., Sanada, T., Sato, S., Imafuku, M., Li, C., & Inoue, A. (2008). Nano quasicrystal formation and local atomic structure in Zr–Pd and Zr–Pt binary metallic glasses. Zeitschrift für Kristallographie, 223(11-12), 726-730.