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Selected Works of Duane D. Johnson
Article
Experimental and theoretical investigations of order-disorder in Cu2AlMn
Computational Materials Science (1997)
  • Duane D. Johnson
  • M. Asta
  • J. J. Hoyt, Washington State University
  • B. C. Chakoumakos, Oak Ridge National Laboratory
  • S. T. Misture, Oak Ridge National Laboratory
  • J. D. Althoff
  • R. McCormack
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Abstract
A combination of X-ray and neutron powder diffraction has been used to measure the two long range order parameters vs. temperature below the disorder-B2 transition in the ternary alloy Cu2 AlMn. The results indicate that at temperatures just below the critical point the Al + Mn sublattice is enriched in Al. First-principles calculations based on only the atomic numbers of Cu, Mn and Al support the experimentally-observed preference of Al for the Al + Mn sublattice, and reveal the interplay between the constituent binary systems that gives rise to this behavior.
Disciplines
Publication Date
May, 1997
Publisher Statement
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Citation Information
Duane D. Johnson, M. Asta, J. J. Hoyt, B. C. Chakoumakos, et al.. "Experimental and theoretical investigations of order-disorder in Cu2AlMn" Computational Materials Science Vol. 8 Iss. 1–2 (1997)
Available at: http://works.bepress.com/duane_johnson/92/