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Abcc–fccTRANSITION OF ACuPRECIPITATE IN Abcc Fe–CuMATRIX

Author

Listed:
  • PAULINA M. STOOP

    (Department of Physics, University of South Africa, Pretoria, South Africa)

  • JAN H. VAN DER MERWE

    (Department of Physics, University of South Africa, Pretoria, South Africa)

  • C. J. SHIFLET

    (Department of Physics, University of South Africa, Pretoria, South Africa;)

  • R. A. JOHNSON

    (Department of Physics, University of South Africa, Pretoria, South Africa;)

Abstract

Three-dimensional, roughly spherical coherentbcc Cuprecipitates form inbcc Fe–Cualloys of lowCuconcentration. When the precipitate reaches a critical radiusR*of about 60 Å, the precipitate structure changes from coherent bcc to incoherent fcc. Embedded atom method atomic interaction potentials are used to calculate the volume defect energies ofCuprecipitate atoms and ofCu–Feinterfacial defect energies. An energetic balance criterion is used to predict a critical radiusRsomewhat different fromR*. Reasons for the discrepancy are discussed.

Suggested Citation

  • Paulina M. Stoop & Jan H. Van Der Merwe & C. J. Shiflet & R. A. Johnson, 1997. "Abcc–fccTRANSITION OF ACuPRECIPITATE IN Abcc Fe–CuMATRIX," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 4(06), pages 1279-1282.
    • Handle: RePEc:wsi:srlxxx:v:04:y:1997:i:06:n:s0218625x9700167x
    DOI: 10.1142/S0218625X9700167X
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