Sluggish mobility and strong icosahedral ordering in Mg-Zn-Ca liquid and glassy alloys

Y. F. Zhao; D. Y. Lin; X. H. Chen; Z. K. Liu; X. D. Hui

doi:10.1016/j.actamat.2013.12.037

Sluggish mobility and strong icosahedral ordering in Mg-Zn-Ca liquid and glassy alloys

Y. F. Zhao, D. Y. Lin, X. H. Chen, Z. K. Liu, X. D. Hui

Materials Science and Engineering

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26 Scopus citations

Abstract

The dynamic properties and atomic configuration of Mg, Mg-Zn, Mg-Zn-Ca and Mg-Zn-Ca-Cu liquid and solid systems were comprehensively studied using ab initio molecular dynamics calculation. The viscosities of an Mg-Zn-Ca alloy were measured from 700 K to 960 K. It was found that Zn and Ca in Mg liquid induce remarkable slowing down of atoms, but Cu acted as a stimulus to the diffusion. Icosahedral short-range orders are most dominant in Mg-Zn-Ca alloys in view of the existence of a majority of 1551 type of bond pairs, âŒ

Original language	English (US)
Pages (from-to)	266-277
Number of pages	12
Journal	Acta Materialia
Volume	67
DOIs	https://doi.org/10.1016/j.actamat.2013.12.037
State	Published - Apr 2014

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2013.12.037

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title = "Sluggish mobility and strong icosahedral ordering in Mg-Zn-Ca liquid and glassy alloys",

abstract = "The dynamic properties and atomic configuration of Mg, Mg-Zn, Mg-Zn-Ca and Mg-Zn-Ca-Cu liquid and solid systems were comprehensively studied using ab initio molecular dynamics calculation. The viscosities of an Mg-Zn-Ca alloy were measured from 700 K to 960 K. It was found that Zn and Ca in Mg liquid induce remarkable slowing down of atoms, but Cu acted as a stimulus to the diffusion. Icosahedral short-range orders are most dominant in Mg-Zn-Ca alloys in view of the existence of a majority of 1551 type of bond pairs, {\^a}{\OE}",

author = "Zhao, \{Y. F.\} and Lin, \{D. Y.\} and Chen, \{X. H.\} and Liu, \{Z. K.\} and Hui, \{X. D.\}",

note = "Funding Information: The authors are grateful for the financial support of National Natural Science Foundation of China (No. 51071018, 51271018). ",

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language = "English (US)",

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T1 - Sluggish mobility and strong icosahedral ordering in Mg-Zn-Ca liquid and glassy alloys

AU - Zhao, Y. F.

AU - Lin, D. Y.

AU - Chen, X. H.

AU - Liu, Z. K.

AU - Hui, X. D.

N1 - Funding Information: The authors are grateful for the financial support of National Natural Science Foundation of China (No. 51071018, 51271018).

PY - 2014/4

Y1 - 2014/4

N2 - The dynamic properties and atomic configuration of Mg, Mg-Zn, Mg-Zn-Ca and Mg-Zn-Ca-Cu liquid and solid systems were comprehensively studied using ab initio molecular dynamics calculation. The viscosities of an Mg-Zn-Ca alloy were measured from 700 K to 960 K. It was found that Zn and Ca in Mg liquid induce remarkable slowing down of atoms, but Cu acted as a stimulus to the diffusion. Icosahedral short-range orders are most dominant in Mg-Zn-Ca alloys in view of the existence of a majority of 1551 type of bond pairs, âŒ

AB - The dynamic properties and atomic configuration of Mg, Mg-Zn, Mg-Zn-Ca and Mg-Zn-Ca-Cu liquid and solid systems were comprehensively studied using ab initio molecular dynamics calculation. The viscosities of an Mg-Zn-Ca alloy were measured from 700 K to 960 K. It was found that Zn and Ca in Mg liquid induce remarkable slowing down of atoms, but Cu acted as a stimulus to the diffusion. Icosahedral short-range orders are most dominant in Mg-Zn-Ca alloys in view of the existence of a majority of 1551 type of bond pairs, âŒ

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DO - 10.1016/j.actamat.2013.12.037

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SN - 1359-6454

VL - 67

SP - 266

EP - 277

JO - Acta Materialia

JF - Acta Materialia

ER -

Sluggish mobility and strong icosahedral ordering in Mg-Zn-Ca liquid and glassy alloys

Abstract

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