Title
Dynamic Observation of Dendritic Quasicrystal Growth upon Laser-Induced Solid-State Transformation
Publication Date
11-6-2020
Department
Ames Laboratory; Physics and Astronomy
Campus Units
Ames Laboratory, Physics and Astronomy
OSTI ID+
1712558
Report Number
IS-J 10366
DOI
10.1103/PhysRevLett.125.195503
Journal Title
Physical Review Letters
Volume Number
125
Issue Number
19
First Page
195503
Abstract
We report the laser-induced solid-state transformation between a periodic “approximant” and quasicrystal in the Al-Cr system during rapid quenching. Dynamic transmission electron microscopy allows us to capture in situ the dendritic growth of the metastable quasicrystals. The formation of dendrites during solid-state transformation is a rare phenomenon, which we attribute to the structural similarity between the two intermetallics. Through ab initio molecular dynamics simulations, we identify the dominant structural motif to be a 13-atom icosahedral cluster transcending the phases of matter.
DOE Contract Number(s)
AC52-07NA27344; SC0019118; AC02-07CH11358
Language
en
Department of Energy Subject Categories
36 MATERIALS SCIENCE
Publisher
Iowa State University Digital Repository, Ames IA (United States)
