Alloys Fe-18Cr-9Ni-3Al, Fe-16Cr-18Ni-5Al, and Fe-20Cr-20Ni-5Al wt.% were prepared by vacuum arc melting and heat treated at 600 °C/514 days, 800 °C/56 days, 1000 °C/32 days, and 1100 °C/15 days. The microstructures of the samples were characterized to identify the equilibrium phases at each temperature. The compositions of the phases were measured with SEM-EDS. Solidus and liquidus were determined using DSC. The experimental results were compared with equilibrium thermodynamic calculations. Significant differences were observed for solidus, solvus temperatures, and compositions of the equilibrium phases.

中文翻译：

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Fe-Cr-Ni-Al体系相平衡的实验测定

合金 Fe-18Cr-9Ni-3Al、Fe-16Cr-18Ni-5Al 和 Fe-20Cr-20Ni-5Al wt.% 通过真空电弧熔炼制备，并在 600 °C/514 天、800 °C/56 天进行热处理天、1000 °C/32 天和 1100 °C/15 天。表征样品的微观结构以识别每个温度下的平衡相。用SEM-EDS测量相的组成。固相线和液相线使用DSC测定。将实验结果与平衡热力学计算进行了比较。观察到固相线、溶线温度和平衡相组成的显着差异。