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Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy.
Gangopadhyay, A K; Pueblo, C E; Dai, R; Johnson, M L; Ashcraft, R; Van Hoesen, D; Sellers, M; Kelton, K F.
Afiliação
  • Gangopadhyay AK; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Pueblo CE; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Dai R; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Johnson ML; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Ashcraft R; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Van Hoesen D; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Sellers M; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
  • Kelton KF; Department of Physics and Institute of Materials Science & Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
J Chem Phys ; 146(15): 154506, 2017 Apr 21.
Article em En | MEDLINE | ID: mdl-28433017
The thermal expansion coefficients, structure factors, and viscosities of twenty-five equilibrium and supercooled metallic liquids have been measured using an electrostatic levitation (ESL) facility. The structure factor was measured at the Advanced Photon Source, Argonne, using the ESL. A clear connection between liquid fragility and structural and volumetric changes at high temperatures is established; the observed changes are larger for the more fragile liquids. It is also demonstrated that the fragility of metallic liquids is determined to a large extent by the cohesive energy and is, therefore, predictable. These results are expected to provide useful guidance in the future design of metallic glasses.

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2017 Tipo de documento: Article