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Study of Order-Disorder Phase Transition of $(Fe_{0.61}Ni_{0.39})_3V$V Alloy by Neutron Diffraction Method  

이정수 (한국원자력연구소 하나로이용기술개발팀)
이창희 (한국원자력연구소 하나로이용기술개발팀)
Publication Information
Korean Journal of Crystallography / v.13, no.1, 2002 , pp. 36-40 More about this Journal
Abstract
The order-disorder phase transition of (Fe/sub 0.61/Ni/sub 0.39/)₃V alloy that is annealed at various temperatures and time conditions was sty(lied with the examination of long-range order parameter(S) by using neutron diffraction method. As a result, the structure of the sample annealed at 680℃ for 94 h was not changed; that is, it existed iii perfect disordered state and showed face-centered cubic structure. Otherwise, samples which were annealed at temperature below 640℃ showed the value of long-range order parameter with 0 < S < 1 and phase transition into simple cubic structure partly. It was found that the annealed sample at 465℃ for 144 h is the most approximated to the thermal equilibrium state from the S-T/T/sub c/ related equation of Cowley.
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