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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 14    No. 1    February 2004

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Correlation between microstructure and composition
of Cu-In alloy
ZHAO Cheng-zhi(赵成志), GUO Jing-jie(郭景杰), SU Yan-qing(苏彦庆),
WU Shi-ping(吴士平), JIA Jun(贾 均)

School of Materials Science and En, gineering, Harbin Institute of Technology,Harbin 150001, China

Abstract:Four compositions of alloys were designed. They were Cu-2% In, Cu-7% In, Cu-11% In and Cu-23% In (mass fraction). These alloy specimens were prepared by metal mold. By means of microstructure observation, macrostructure observation and electron probe analyzing, microstructures and macrostructures of the specimens were analyzed by comparison method. Microstructure component and relationship between structure and composition of alloys were investigated. The results show that with increasing indium content, the grain changes from columnar one to equiaxed one, the equiaxed grain increases, the columnar grain zone decreases and the grain size becomes small. With increasing indium content, the growth way changes from planar one to dendritic one. Peritectic reaction plays inhibiting role on the growth of dendrite and affects the orientation of dendrite. Indium content has influence on lattice constant of Cu solid solution.

 

Key words: Cu-In; mircrostructure; composition

ISSN 1672-7029
CN 43-1423/U

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