Nano icosahedral quasicrystalline phase in Zr65Al7.5Ni10Ag17.5 quaternary glassy alloy

7Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.

Abstract

A nano icosahedral quasicrystalline phase was confirmed as the primary precipitation phase in the melt-spun Zr65Al7.5Ni10Ag17.5 quaternary glassy alloy with a two-stage crystallization process. The onset temperature of the first exothermic peak is 704 K at a heating rate of 0.67 Ks-1. Although no significant X-ray diffraction peaks were observed in the sample annealed at 705 K, we confirmed the formation of the icosahedral phase by nano beam electron diffraction using FE-TEM. The icosahedral particles have an extremely fine grain size in the diameter range of 2 to 4 nm. In addition to the icosahedral phase, the nano crystalline particles corresponding to Zr2Ag and/or fcc-Zr2Ni structures are also observed in the annealed sample. The second exothermic peak denotes the transition from the nano icosahedral to the crystalline phase of Zr2Ag, fcc-Zr2Ni and Zr4Al3. The formation of the nano icosahedral phase as the primary phase is due to a high nucleation rate and strongly implies the existence of an icosahedral short-range order in the glassy state.

Cite

CITATION STYLE

APA

Saida, J., Matsushita, M., & Inoue, A. (2001). Nano icosahedral quasicrystalline phase in Zr65Al7.5Ni10Ag17.5 quaternary glassy alloy. Materials Transactions, 42(8), 1493–1496. https://doi.org/10.2320/matertrans.42.1493

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free