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Title: A side-by-side comparison of the solidification dynamics of quasicrystalline and approximant phases in the Al–Co–Ni system

Abstract

Quasicrystals and their approximants have triggered widespread interest due to the challenge of solving their complex crystal structures as well as their possibly exceptional properties. The structural motifs of approximants are similar to those of the corresponding quasicrystals, but to what extent are their crystallization pathways the same? Unfortunately, there have been very fewin situexperimental investigations to answer this question. Here, by leveraging the high penetrating power of hard X-rays, synchrotron-based X-ray tomography was conducted in order to capture the nucleation and growth of a decagonal quasicrystal and its related approximant. The combination of data-driven computational analysis with new thermodynamic databases allowed the characterization, with high precision, of the constitutional and kinetic driving forces for crystallization. The experimental results prove that the growth of both crystals from a liquid is dominated by first-order kinetics. Nevertheless, and somewhat surprisingly, significant differences were observed in their rates of nucleation and growth. The reasons for such divergent behaviours are discussed in light of contemporary theories of intermetallic crystallization.

Authors:
 [1];  [2];  [1];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1493634
Alternate Identifier(s):
OSTI ID: 1530183
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Acta Crystallographica. Section A, Foundations and Advances (Online)
Additional Journal Information:
Journal Name: Acta Crystallographica. Section A, Foundations and Advances (Online); Journal Volume: 75; Journal Issue: 2; Journal ID: ISSN 2053-2733
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Approximant phases; Nucleation and growth; Quasicrystals; Synchrotron radiation

Citation Formats

Han, Insung, Xiao, Xianghui, Sun, Haiping, and Shahani, Ashwin J. A side-by-side comparison of the solidification dynamics of quasicrystalline and approximant phases in the Al–Co–Ni system. United States: N. p., 2019. Web. doi:10.1107/S2053273318017114.
Han, Insung, Xiao, Xianghui, Sun, Haiping, & Shahani, Ashwin J. A side-by-side comparison of the solidification dynamics of quasicrystalline and approximant phases in the Al–Co–Ni system. United States. doi:10.1107/S2053273318017114.
Han, Insung, Xiao, Xianghui, Sun, Haiping, and Shahani, Ashwin J. Wed . "A side-by-side comparison of the solidification dynamics of quasicrystalline and approximant phases in the Al–Co–Ni system". United States. doi:10.1107/S2053273318017114.
@article{osti_1493634,
title = {A side-by-side comparison of the solidification dynamics of quasicrystalline and approximant phases in the Al–Co–Ni system},
author = {Han, Insung and Xiao, Xianghui and Sun, Haiping and Shahani, Ashwin J.},
abstractNote = {Quasicrystals and their approximants have triggered widespread interest due to the challenge of solving their complex crystal structures as well as their possibly exceptional properties. The structural motifs of approximants are similar to those of the corresponding quasicrystals, but to what extent are their crystallization pathways the same? Unfortunately, there have been very fewin situexperimental investigations to answer this question. Here, by leveraging the high penetrating power of hard X-rays, synchrotron-based X-ray tomography was conducted in order to capture the nucleation and growth of a decagonal quasicrystal and its related approximant. The combination of data-driven computational analysis with new thermodynamic databases allowed the characterization, with high precision, of the constitutional and kinetic driving forces for crystallization. The experimental results prove that the growth of both crystals from a liquid is dominated by first-order kinetics. Nevertheless, and somewhat surprisingly, significant differences were observed in their rates of nucleation and growth. The reasons for such divergent behaviours are discussed in light of contemporary theories of intermetallic crystallization.},
doi = {10.1107/S2053273318017114},
journal = {Acta Crystallographica. Section A, Foundations and Advances (Online)},
number = 2,
volume = 75,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1107/S2053273318017114

Citation Metrics:
Cited by: 2 works
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Works referenced in this record:

Metallic Phase with Long-Range Orientational Order and No Translational Symmetry
journal, November 1984