Deformation in metallic glasses studied by synchrotron X-Ray Diffraction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

12 Scopus Citations
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Author(s)

  • Takeshi Egami
  • Yang Tong
  • Wojciech Dmowski

Detail(s)

Original languageEnglish
Journal / PublicationMetals
Volume6
Issue number1
Publication statusPublished - 11 Jan 2016

Link(s)

Abstract

High mechanical strength is one of the superior properties of metallic glasses which render them promising as a structural material. However, understanding the process of mechanical deformation in strongly disordered matter, such as metallic glass, is exceedingly difficult because even an effort to describe the structure qualitatively is hampered by the absence of crystalline periodicity. In spite of such challenges, we demonstrate that high-energy synchrotron X-ray diffraction measurement under stress, using a two-dimensional detector coupled with the anisotropic pair-density function (PDF) analysis, has greatly facilitated the effort of unraveling complex atomic rearrangements involved in the elastic, anelastic, and plastic deformation of metallic glasses. Even though PDF only provides information on the correlation between two atoms and not on many-body correlations, which are often necessary in elucidating various properties, by using stress as means of exciting the system we can garner rich information on the nature of the atomic structure and local atomic rearrangements during deformation in glasses.

Research Area(s)

  • Anisotropic PDF analysis, High-energy X-ray diffraction, Mechanical deformation, Metallic glasses

Citation Format(s)

Deformation in metallic glasses studied by synchrotron X-Ray Diffraction. / Egami, Takeshi; Tong, Yang; Dmowski, Wojciech.

In: Metals, Vol. 6, No. 1, 11.01.2016.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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