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Bragg‐Williams Model of Thermal Defect Formation in Ordering Binary Alloys with D0~3~ Structure: Applications to Fe~3~Al by D. Spišák; H. Mehrer is a Physics and Astronomy article available to read on EtoBox.
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## Abstract Thermal defect formation in ordering binary alloys with DO~3~ structure is studied in the framework of a Bragg‐Williams model including nearest and next‐nearest neighbour bonds and applied to the case of Fe~3~AI. Values for vacancy concentrations on the various sublattices are deduced including the configurational entropy of the system but neglecting defect formation entropies. Vacancy concentrations are found to be fairly high especially on the Fe sublattices. Antisite atom concentrations are calculated and found to be several orders of magnitude higher than vacancy concentrations. Information about short‐range ordering is also achieved. Some consequences for diffusion in DO~3~ ordering alloys are discussed.
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- Author
- D. Spišák; H. Mehrer
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 0370-1972)
- Published
- 1995
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)