Characterization of the Fe-rich corner of Al-Fe-Si-Ti

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• 作者：Martin C.J. Marker^a ; Liliana I. Duarte^b ; Christian Leinenbach^b ; Klaus W. Richter^a ; ^{klaus.richter@univie.ac.at}
• 关键词：A. Multiphase intermetallics ; A. Laves phases ; A. Iron aluminides ; B. Phase diagrams ; B. Mechanical properties at ambient temperature
• 刊名：Intermetallics
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：39
• 期：Complete
• 页码：38-49
• 全文大小：1170 K

文摘

The quaternary system Al-Fe-Si-Ti was studied in the iron-rich corner for sections at 50, 60 and 70?at. % Fe at 900?¡ãC. Isothermal phase equilibria were investigated by a combination of optical microscopy, X-ray powder diffraction (XRD) followed by Rietveld refinement and Electron Probe Microanalysis (EPMA). Phase boundaries of the phases, in particular of the Laves phase (Fe₂Ti) and of the extended phase field of A2/B2/D0₃, were investigated. Selected samples containing the Laves phase and the B2 phase were characterized by microhardness measurements at different compositions throughout the quaternary homogeneity range of the phases.