Phase Transformations in Low-Fe Alloys of the Al-Cu-Fe System  

作　　者：LimingZhang 

机构地区：[1]DepartmentforEarthandEnvironmentalScience,Crystallographysection,Ludwig-Maximillian-UniversitatMünchen,Theresienstrasse41,D-80333München,Germany

出　　处：《材料热处理学报》2004年第5期234-238,共5页Transactions of Materials and Heat Treatment

摘　　要：Microstructure and phase transformation in the Al-Cu-Fe alloys of the approximate compositional range of 20 - 50 at.% Cu and 2 - 10 Fe at.% have been investigated from samples quenched from their respective temperatures by means of different thermal analysis, magnetothermal analysis, scanning electron microscopy, electron probe analysis and powder X-ray diffraction. Representative phase transformations categorized as polymorphic, discontinuous precipitation, quasi-binary eutectoid, and ternary transitional U-type phase transformation are presented. These phase transformations were found to have a common feature which consumes the phase and appears the phase. A schematic diagram was proposed to demonstrate the transition processes with decreasing temperature.Microstructure and phase transformation in the Al-Cu-Fe alloys of the approximate compositional range of 20 - 50 at.% Cu and 2 - 10 Fe at.% have been investigated from samples quenched from their respective temperatures by means of different thermal analysis, magnetothermal analysis, scanning electron microscopy, electron probe analysis and powder X-ray diffraction. Representative phase transformations categorized as polymorphic, discontinuous precipitation, quasi-binary eutectoid, and ternary transitional U-type phase transformation are presented. These phase transformations were found to have a common feature which consumes the phase and appears the phase. A schematic diagram was proposed to demonstrate the transition processes with decreasing temperature.

关 键 词：Al-Cu-Fe合金 相位变换 热分析 磁化率 扫描电子显微术 X射线衍射 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG115.22[金属学及工艺—金属材料]