Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 14    No. 3    June 2004

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Boundary trend ofα1/(α1+α2) phase region
at lower Cu side in Al-Zn-Cu system
CHEN hui(陈 辉), REN Yu-ping(任玉平), XIN xin(信 昕), HAO Shi-ming(郝士明)

School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

Abstract:The range of miscibility gap above 300℃at low Cu side in Al-Cu-Zn ternary system was obtained by EPMAof the designed alloys and diffusion-couples treated for equilibrium. The results about the boundary trend of theα1/(α1+α2) phase region was obtained. Theα1/(α1+α2) boundary moves towards the lower Zn side with the increase of Cu content. The results are opposite to traditional phase diagrams obtained by experiments, but consistent with recent thermodynamic calculations.


Key words: Al-Zn-Cu system; miscibility gap;α1/(α1+α2) boundary

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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