Order-Disorder Transformation in Cu_3Au-Cu_3Pd and Cu_3Au-Cu_3Pt Quasibinary Systems
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概要
- 論文の詳細を見る
The phase relations and kinetics of ordering in fcc-type Cu_3Au_<1_x>Pd_x and Cu_3Au_<1_x>Pt_x(0<x<1)were studied. The L1_2-phase, which is stable in the three terminal binary alloys, also exists in both these quasibinary systems over the whole composition range.The transition temperature from the L1_2phase to the Al-phase has a maximum at x=0.55 for the former system and at x=0.56 for the latter system.The dependence of the long-range order parameter upon temperature observed for the stoichiometric alloy Cu_3Au_0.5Pd_0.5 indicates that the transition is of the first order.The superlattice formation was treated thermodynamically by the Bragg-Williams approximation.The transition temperatures from the L1_2-phase to the disordered Al-phase were calculated for various compositions.The calculated results agree fairly well the experiments for both systems.
- 社団法人応用物理学会の論文
- 1979-10-05
著者
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NAKAHIGASHI Kiyotaka
Department of Materials Science, University of Osaka Prefecture
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KOGACHI Mineo
Department of Materials Science, University of Osaka Prefecture
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Kogachi Mineo
Department Of Material Science University Of Osaka Prefecture
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Nakahigashi Kiyotaka
Department Of Material Science University Of Osaka Prefecture
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