Dendritic morphology of α-Mg during the solidification of Mg-based alloys: 3D experimental characterization by X-ray synchrotron tomography and phase-field simulations

M. Y. Wang, J. J. Williams, L. Jiang, F. De Carlo, T. Jing, Nikhilesh Chawla

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

The microstructural features of many engineering materials are characterized by three-dimensional (3D) dendritic patterns. Here, we have used a combination of computer simulations by phase field method and 3D experimental characterization by X-ray synchrotron tomography to demonstrate that the morphologies of hexagonal close-packed α-Mg dendritic structures during solidification which exhibit quasi-perfect sixfold symmetry are different from previously thought. These results have important implications for predicting the microstructural features of cast alloys that exhibit dendritic solidification processes.

Original languageEnglish (US)
Pages (from-to)855-858
Number of pages4
JournalScripta Materialia
Volume65
Issue number10
DOIs
StatePublished - Nov 2011

Keywords

  • 3D microstructural characterization
  • Hexagonal close-packed (hcp)
  • Magnesium dendrite
  • Phase-field simulations
  • X-ray tomography

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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