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Anisotropic atomic structure in a homogeneously deformed metallic glass

Published online by Cambridge University Press:  03 March 2011

M.J. Kramer ,
R.T. Ott  and
D.J. Sordelet
M.J. Kramer*
Affiliation:
Materials and Engineering Physics Program, Ames Laboratory (USDOE), Ames, Iowa 50011; and Materials Science and Engineering Department, Iowa State University, Ames Iowa 50011
R.T. Ott
Affiliation:
Materials and Engineering Physics Program, Ames Laboratory (USDOE), Ames, Iowa 50011
D.J. Sordelet
Affiliation:
Materials and Engineering Physics Program, Ames Laboratory (USDOE), Ames, Iowa 50011
*
a) Address all correspondence to this author. e-mail: mjkramer@ameslab.gov
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Abstract

The anisotropic atomic structure in a Zr41.2Ti13.8Cu12.5Ni10Be22.5 metallic glass strained during uniaxial tensile creep at 598 K was studied at room temperature using high-energy x-ray diffraction. Changes in the atomic structure were examined by comparing the total scattering function [S(Q)] and the reduced pair distribution function [G(r)] of the creep to that of a companion specimen subjected to the same heat treatment only. Two-dimensional maps of the ΔS(Q) and its Fourier transformation demonstrate the distribution in the bond orientation anisotropy increases with increasing total strain. A fit of the reduced pair distribution function using a simplified two-component model suggests that the bond length changes in the deformed creep samples are not uniform.

Keywords

AmorphousX-ray diffraction (XRD)
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 2 , September 2006 , pp. 382 - 388
Copyright
Copyright © Materials Research Society 2007

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References

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