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 °C. 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.

中文翻译：

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Al-Fe-Si-Ti 富铁角的表征

在 50、60 和 70 at.% Fe 和 900 °C 的富铁角部分研究了四元系统 Al-Fe-Si-Ti。等温相平衡通过光学显微镜、X 射线粉末衍射 (XRD) 和 Rietveld 精修和电子探针微量分析 (EPMA) 的组合进行研究。研究了相的相界，特别是 Laves 相 (Fe2Ti) 和 A2/B2/D03 的扩展相场的相界。包含 Laves 相和 B2 相的选定样品通过在整个四元均质范围内不同成分的显微硬度测量进行表征。