The solid-state phase transformations, phase stability, and defect structure in the Cr–Zr system were investigated experimentally by using differential scanning calorimetry (DSC), X-ray diffraction (XRD), and Scanning electron microscope (SEM) along with EDX. Arc melting was used to synthesize all of these alloys. The temperature of the Cr and Zr-rich eutectic L ↔ C36–Cr₂Zr + Cr and L ↔ β-Zr + C15–Cr₂Zr were determined to be 1861 ± 3 K and 1588 ± 3 K, respectively. The temperature corresponding to the eutectoid transformation β-Zr ↔ α-Zr + C15–Cr₂Zr was found to be 1099 ± 2 K. The temperature pertaining to C36–Cr₂Zr ↔Cr + C15–Cr₂Zr transformation were determined to be 1844 ± 3 K. These values are notably different from previous measurements and are more accurate. The liquidus temperature in the composition range from 60 to 100 at.% Zr was measured for the first time. All the alloy specimens were characterized by X-ray diffraction. The lattice parameters and relative phase fraction of the constituent phases were evaluated by using Rietveld refinement of the XRD data. At ambient temperature, the refined lattice parameter of C15–Cr₂Zr increases linearly with Zr concentration from 31 (7.199 Å) to 34 at.% Zr (7.210 Å). The oxygen impurities play an important role in the sluggish transformation of the C14/C36–Cr₂Zr ↔ C15–Cr₂Zr Laves phase. The density calculated based on lattice parameters determined by XRD and the theoretical model for anti-site type defects makes it is fair to conclude that C15–Cr₂Zr Laves phase is a substitutional type solid solution. The experimental data presented here is consistent and reliable, and it supersedes previous findings.

采用差示扫描量热法 (DSC)、X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和 EDX 对 Cr-Zr 体系中的固态相变、相稳定性和缺陷结构进行了实验研究。电弧熔化用于合成所有这些合金。Cr 和 Zr 富共晶 L ↔ C36–Cr ₂ Zr + Cr 和 L ↔ β-Zr + C15–Cr ₂ Zr 的温度分别确定为 1861 ± 3 K 和 1588 ± 3 K。共析转变 β-Zr ↔ α-Zr + C15–Cr ₂ Zr 对应的温度为 1099 ± 2 K。 C36–Cr ₂ Zr ↔Cr + C15–Cr _2的温度Zr 变换确定为 1844 ± 3 K。这些值与以前的测量值显着不同，并且更准确。首次测量了 60 至 100 at.% Zr 组成范围内的液相线温度。所有合金试样均通过 X 射线衍射进行了表征。通过使用 XRD 数据的 Rietveld 细化来评估组成相的晶格参数和相对相分数。_{在环境温度下，C15–Cr 2} Zr的细化晶格参数随着 Zr 浓度从 31 (7.199 Å) 到 34 at.% Zr (7.210 Å) 线性增加。_{氧杂质在 C14/C36–Cr 2} Zr ↔ C15–Cr ₂的缓慢转变中起重要作用Zr Laves 相。根据 XRD 确定的晶格参数计算的密度和反位点型缺陷的理论模型可以得出结论，C15-Cr ₂ Zr Laves 相是一种置换型固溶体。这里提供的实验数据是一致和可靠的，它取代了以前的发现。