MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Interdiffusion in α Solid Solution of the Al-Cu-Mg-Ag System
Tomoshi TakahashiKoji HisayukiToshimi YamaneYoritoshi MinaminoTakanori Hino
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2003 Volume 44 Issue 11 Pages 2252-2257

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Abstract

Quaternary and ternary interdiffusion experiments of Al-rich α Al-Cu-Mg-Ag alloys have been performed in the temperature range from 793 to 853 K. The concentration profiles indicate that the diffusion distance of Cu is shorter than those of Mg and Ag in the solid solutions. The direct and indirect interdiffusion coefficients are positive in the ternary and quaternary alloys. The ratio of indirect coefficient to direct one suggests that repulsive interactions exist between Cu and Mg atoms in the Al-Cu-Mg-Ag alloys. In addition, the ratio values of converted interdiffusion coefficients in the quaternary alloys suggest that the interactions between Al(solvent) and Cu atoms are attractive in the present alloy.

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© 2003 The Japan Institute of Metals and Materials
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