Phase Transformations in Low-Fe Alloys of the Al-Cu-Fe System
来源期刊：材料热处理学报2004年第5期
论文作者：Liming Zhang
关键词：Phase transformations; Al-Cu-Fe; thermal analyses; magnetic susceptibility; scanning electron microscopy; powder X-ray diffraction;
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 β phase and appears the φ phase. A schematic diagram was proposed to demonstrate the transition processes with decreasing temperature.
Liming Zhang1
(1.Department for Earth and Environmental Science, Crystallography section, Ludwig-Maximillian- Universitat Munchen, Theresienstrasse 41, D-80333 Munchen, Germany)
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 β phase and appears the φ phase. A schematic diagram was proposed to demonstrate the transition processes with decreasing temperature.
关键词:Phase transformations; Al-Cu-Fe; thermal analyses; magnetic susceptibility; scanning electron microscopy; powder X-ray diffraction;
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