Pešička Josef, Kratochvíl Petr, Král Robert, Veselý Jozef, Jača Eliška, Preisler Dalibor, Daniš Stanislav, Minárik Peter, Čamek Libor
Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic.
Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic.
Materials (Basel). 2023 Jul 31;16(15):5388. doi: 10.3390/ma16155388.
The phase structure and composition of a series of four alloys based on FeAl was investigated by means of scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The materials were composed of Fe and Al with a fixed ratio of 3:1 alloyed with V, Cr and Ni at 8, 12, 15 and 20 at. % each (composition formula: Fe AlVCrNi). For 8% alloying, the material is single-phase D0. Furthermore, 12 and 15% alloying results in bcc-B2 phase separation on two length scales. Moreover, 20% alloying gives rise to the FeNiCrV σ phase supplemented by B2. These findings are discussed with respect to the results obtained via Calphad modeling using the TCHEA5 database and can serve in further improvement.
通过扫描电子显微镜、X射线衍射和透射电子显微镜对一系列四种基于FeAl的合金的相结构和成分进行了研究。这些材料由铁和铝以3:1的固定比例组成，并分别与钒、铬和镍以8%、12%、15%和20%（原子百分比）的比例合金化（成分公式：Fe AlVCrNi）。对于8%的合金化，材料为单相D0。此外，12%和15%的合金化会导致在两个长度尺度上出现体心立方-B2相分离。而且，20%的合金化会产生由B2相补充的FeNiCrV σ相。结合使用TCHEA5数据库通过计算相图（Calphad）建模获得的结果对这些发现进行了讨论，这些结果可用于进一步改进。
