Ordering Kinetics in B2-FeAl

  • H. Lang
  • K. Rohrhofer
  • W. Pfeiler
  • H. Schweiger
  • R. Podloucky


Changes in the degree of long-range order (LRO) have been investigated in B2-ordered intermetallic Fe-44.8at%Al by residual resistometry. Order variations were observed during isochronal and isothermal small-step annealing after different thermal pre-treatment. It is observed that atomic mobility in this alloy starts at about 500K. Between 500K and 700K reversible changes of resistivity are interpreted as arising from local changes of order only. Above 710K changes of LRO are observed which lead to the reversible adjustment of equilibrium plateau values above 870K. Two individual processes are found for both ordering regimes, which concern only local sample areas and the total sample volume, respectively.


Annealing Time Activation Enthalpy Atomic Mobility Isochronal Annealing Isothermal Measurement 
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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • H. Lang
    • 1
  • K. Rohrhofer
    • 1
  • W. Pfeiler
    • 1
  • H. Schweiger
    • 2
  • R. Podloucky
    • 2
  1. 1.Institut für MaterialphysikUniversity of ViennaViAustria
  2. 2.Center of Computational Materials Science and Department for Physical Che ViennaViennaAustria

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