Structure development in rapidly solidified Al–Fe–V–Si ribbons

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• 作者：Yaneva ; S. ; Kalkanl? ; A. ; Petrov ; K. ; Petrov ; R. ; Yvan Houbaert ; Ir. ; Kassabov ; S.
• 关键词：Microcrystalline Al&ndash ; Si alloys ; Supersaturated Al matrix ; Quaternary silicide phases ; Differential scanning calorimetry ; X-ray diffraction ; Mö ; ssbauer spectroscopy
• 刊名：Materials Science and Engineering ; A
• 出版年：2004
• 期刊代码：61_09215093
• 类别：ms
• 出版时间：May 25, 2004
• 卷：373
• 期：1-2
• 页码：90-98
• 文件大小：560 K

摘要

Microcrystalline Al–8.5wt.%Fe–1.06wt.%V–2.75wt.%Si, ribbon was produced by a planar flow casting (PFC) technique. Environmental scanning electron microscopy, X-ray diffraction and Mössbauer spectroscopy proved that the polycrystalline alloy consists of a supersaturated Al matrix and quaternary Al–S–Fe–V dispersoids. The observed single exothermal peak in the differential scanning calorimetry curves was ascribed to partial decomposition of the Al supersaturated solid solution. After prolonged heating at 873K, the microcrystalline alloy still consists of supersaturated Al matrix with lattice parameter 0.40485(4)nm, reinforced by silicide particles with chemical formula Al_13.18(Fe,V)_1.84Si and lattice parameter 1.2578(8)nm.