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

Research output: Contribution to journalArticlepeer-review

14 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 languageEnglish (US)
Pages (from-to)266-277
Number of pages12
JournalActa Materialia
Volume67
DOIs
StatePublished - 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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