Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system
Journal Article
·
· AIP Conference Proceedings
- Department of Electronic and Physical system, Waseda University, 3-4-1, Okubo, Shinjuku-ku, Tokyo, 169-8555 (Japan)
To understand the crystallographic relation between the Bergman-type icosahedral quasicrystal and its approximant-T structure, we have investigated the crystallographic features of prepared Zn-Mg-Al alloy samples, mainly by transmission electron microscopy. It was found that there existed three kinds of regions: that is, C14-Laves, approximant-T, and icosahedral-quasicrystal regions, in Zn-Mg-Al alloy samples with the composition of Zn-36at.%Mg-9at.%Al. Among these regions, in particular, we tried to determine an orientation relationship between neighboring icosahedral-quasicrystal and approximant-T regions. Based on the determined relationship, for instance, four threefold rotatory-inversion axes in the T structure were found to be parallel to four of ten threefold rotatory-inversion axes in the icosahedral quasicrystal. It was thus understood that the atomic arrangements of the Bergman-type icosahedral quasicrystal and its approximant-T structure are likely to resemble each other.
- OSTI ID:
- 22608252
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1763; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
On the stable Mg-Zn-Y quasicrystals
Quasicrystals in as-cast Mg-Zn-RE alloys
Morphology and the structure of quasicrystal phase in as-cast and melt-spun Mg-Zn-Y-Zr alloys
Journal Article
·
Mon Jul 01 00:00:00 EDT 1996
· Metallurgical Transactions, A
·
OSTI ID:282228
Quasicrystals in as-cast Mg-Zn-RE alloys
Journal Article
·
Tue Jun 15 00:00:00 EDT 1993
· Scripta Metallurgica et Materialia; (United States)
·
OSTI ID:6402116
Morphology and the structure of quasicrystal phase in as-cast and melt-spun Mg-Zn-Y-Zr alloys
Journal Article
·
Fri Oct 01 00:00:00 EDT 1993
· Scripta Metallurgica et Materialia; (United States)
·
OSTI ID:6256052