Correlation between microstructure and compositionof Cu-In alloy

来源期刊：中国有色金属学报(英文版)2004年第1期

论文作者：赵成志 郭景杰 苏彦庆 吴士平 贾均

文章页码：131 - 136

Key words：Cu-In; mircrostructure; composition

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.