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

doi:10.1016/j.scriptamat.2011.07.040

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 journal › Article › peer-review

67 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 language	English (US)
Pages (from-to)	855-858
Number of pages	4
Journal	Scripta Materialia
Volume	65
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2011.07.040
State	Published - Nov 2011

Keywords

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

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2011.07.040

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

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.",

keywords = "3D microstructural characterization, Hexagonal close-packed (hcp), Magnesium dendrite, Phase-field simulations, X-ray tomography",

author = "Wang, \{M. Y.\} and Williams, \{J. J.\} and L. Jiang and \{De Carlo\}, F. and T. Jing and Nikhilesh Chawla",

note = "Funding Information: M.Y.W. and T.J. acknowledge financial support from the National Basic Research Program of China , under Grant No. 2006CB605208 ; the National Science and Technology Major Project of China , under Grant No. 2011ZX04014-052 ; and Doctoral Fund of Ministry of Education of China , under Grant No. 20090002110031 . M.Y.W. acknowledges the Chinese Scholarship Council for financial support during his stay at ASU. Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.",

year = "2011",

month = nov,

doi = "10.1016/j.scriptamat.2011.07.040",

language = "English (US)",

volume = "65",

pages = "855--858",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "10",

}

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T1 - Dendritic morphology of α-Mg during the solidification of Mg-based alloys

T2 - 3D experimental characterization by X-ray synchrotron tomography and phase-field simulations

AU - Wang, M. Y.

AU - Williams, J. J.

AU - Jiang, L.

AU - De Carlo, F.

AU - Jing, T.

AU - Chawla, Nikhilesh

N1 - Funding Information: M.Y.W. and T.J. acknowledge financial support from the National Basic Research Program of China , under Grant No. 2006CB605208 ; the National Science and Technology Major Project of China , under Grant No. 2011ZX04014-052 ; and Doctoral Fund of Ministry of Education of China , under Grant No. 20090002110031 . M.Y.W. acknowledges the Chinese Scholarship Council for financial support during his stay at ASU. Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

PY - 2011/11

Y1 - 2011/11

N2 - 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.

AB - 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.

KW - 3D microstructural characterization

KW - Hexagonal close-packed (hcp)

KW - Magnesium dendrite

KW - Phase-field simulations

KW - X-ray tomography

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U2 - 10.1016/j.scriptamat.2011.07.040

DO - 10.1016/j.scriptamat.2011.07.040

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SN - 1359-6462

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SP - 855

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JO - Scripta Materialia

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IS - 10

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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