Precipitation of binary quasicrystals along dislocations

Nature Communications
Zhi-Qing YangStephen J Pennycook

Abstract

Dislocations in crystals naturally break the symmetry of the bulk, introducing local atomic configurations with symmetries such as fivefold rings. But dislocations do not usually nucleate aperiodic structure along their length. Here we demonstrate the formation of extended binary quasicrystalline precipitates with Penrose-like random-tiling structures, beginning with chemical ordering within the pentagonal structure at cores of prismatic dislocations in Mg-Zn alloys. Atomic resolution observations indicate that icosahedral chains centered along [0001] pillars of Zn interstitial atoms are formed templated by the fivefold rings at dislocation cores. They subsequently form columns of rhombic and elongated hexagonal tiles parallel to the dislocation lines. Quasicrystalline precipitates are formed by random tiling of these rhombic and hexagonal tiles. Such precipitation may impact dislocation glide and alloy strength.

References

Sep 15, 1989·Physical Review. B, Condensed Matter·K J Strandburg
Dec 16, 2000·Nature·A P TsaiT J Sato
Mar 6, 2003·Nature Materials·U KaiserM Kawasaki
Nov 2, 2004·Nature Materials·Eiji AbeStephen J Pennycook
Dec 13, 2006·Nature Materials·Hiroyuki TakakuraAn Pang Tsai
May 16, 2007·Physical Review Letters·Hyeong-Chai Jeong
Feb 1, 2008·Physical Review Letters·Aaron S Keys, Sharon C Glotzer
Nov 15, 2008·Science·Matthew O BluntPeter H Beton
Dec 17, 2009·Nature·Amir Haji-AkbariSharon C Glotzer
Jul 13, 2013·Science·A HirataM W Chen
Feb 4, 2014·Nature·T DoteraP Ziherl
Jul 2, 2014·Angewandte Chemie·Zhiqing YangMatthew F Chisholm
Jul 12, 2014·Physical Review Letters·C V AchimH Löwen
Sep 5, 2015·Physical Review Letters·P Kuczera, W Steurer
Nov 25, 2014·Science and Technology of Advanced Materials·Ki-Seok KimL Li
Apr 26, 2017·Ultramicroscopy·Stephen J Pennycook

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Citations

Oct 12, 2018·Advanced Materials·Haijun WuStephen J Pennycook
Aug 5, 2020·Proceedings of the National Academy of Sciences of the United States of America·Zebin SuStephen Z D Cheng
Jul 22, 2018·The Journal of Physical Chemistry Letters·Hongbo XieGaowu Qin

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Methods Mentioned

BETA
transmission electron microscopy
X-ray

Software Mentioned

LAMMPS

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