A series of Fe-Hf-Zr alloys were designed to determine the phase equilibria for the entire composition range by annealing at 1173 K and 1373 K for 440–720 h and 12–360 h respectively, followed by X-ray diffraction (XRD) measurements and electron probe microanalysis (EPMA). At the Fe-rich corner, it was argued that the Fe₂₃Zr₆ phase is a stable phase without oxygen contamination, of which the formation mechanism was discussed. The Fe₂(Hf,Zr)_C15 phase forms a continuous solid solution. The two-phase region of β(Hf,Zr) + Fe(Hf,Zr)₃ was detected at 1173 K. The Fe(Hf,Zr)₃ phase was observed in this ternary system at 1173 K, which is attributed to the increasing thermodynamic stability by dissolving Hf. The solubility of Fe in α(Hf,Zr) was determined to be extremely low. The liquid phase appears at 1373 K in a large composition range. No ternary compound was identified at both temperatures in this system. Based on the experimental results and reasonable extrapolations, the isothermal sections of 1173 K and 1373 K were constructed, which respectively consist of seven and five three-phase regions.

设计了一系列Fe-Hf-Zr合金，分别通过在1173 K和1373 K上分别进行440-720 h和12-360 h退火，然后进行X射线衍射（XRD），以确定整个组成范围的相平衡测量和电子探针显微分析（EPMA）。在富铁角，有人认为Fe ₂₃ Zr ₆相是稳定的相，没有氧污染，并讨论了其形成机理。Fe ₂（Hf，Zr）_C15相形成连续的固溶体。在1173 K处检测到β（Hf，Zr）+ Fe（Hf，Zr）₃的两相区域。Fe（Hf，Zr）₃在1173 K时，在该三元体系中观察到液相，这归因于通过溶解H提高了热力学稳定性。Fe在α（Hf，Zr）中的溶解度被确定为极低。在较大的组成范围内，液相出现在1373K。在该系统的两个温度下均未发现三元化合物。根据实验结果和合理的外推法，构建了分别由七个和五个三相区域组成的1173 K和1373 K等温截面。