Abstract
Abstract A general expression for the relaxation strength Δ M for Zener relaxation is obtained in terms of the rates of change with strain of the short-range order parameters and of the assumed pair-wise interaction energies between atoms. A Bethe-Peierls description of the degree of order yielded values of Δ M in agreement with experiment (Le Claire and Lomer 1954) but is unable to explain more recent observations in a AgZn and LiMg alloys of (1) a marked anisotropy of Δ M (Seraphim and Nowick 1961) and (2) a positive critical temperature, increasing with solute concentration, in the Curie-Weiss type temperature dependence of Δ M (Li and Nowick 1961). Both these defects are fully remedied when the more complete Cowley (1950, 1960) equations are used to describe the degree of order. First and second nearest-neighbour interaction energies only need to be taken into account and order parameters out to eighth neighbours. Good agreement with experimental measurements on a AgZn alloys is obtained with a choice...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
