The phase equilibria in the Zr–ZrCo–ZrNi system at subsolidus temperature and at 900 and 800°C were first studied using physicochemical analysis methods, and solidus surfaces and isothermal sections at 900 and 800°C were constructed. Isomorphic Zr₂Co and Zr₂Ni compounds with a tetragonal crystal structure of AlCu2 (θ) type form a continuous series of solid solutions dividing the Zr–ZrCo–ZrNi system into two subsystems: Zr–Zr₂Co–Zr₂Ni and ZrCo–ZrNi–Zr₂Ni–Zr₂Co. The equilibria on the solidus surface of the Zr–Zr₂Co–ZrCo–Zr₂Ni system and at 900°C differ significantly. This is associated with the Zr₃Co-based η phase formed by peritectoid reaction 〈β − Zr〉 + 〈Zr₂Co〉 → η at 980°C, being close to theL ↔ θ + β eutectic crystallization temperature (986°C), in the binary Zr–Co system. At 900 and 800°C, the 𝜂 phase dissolves up to 14.5% Ni. The solidus surface of the ternary Zr₂Co–Zr₂Ni–ZrCo–ZrNi system shows a three-phase equilibrium of the θ phase with the ZrCo (δ) and ZrNi (δ₂) phases of the ZrCo–ZrNi quasibinary section: δ + δ₂ + θ. The plane of this tie-line triangle extends significantly at 900 and 800°C as the solubility of nickel in the cubic ZrCo-based phase of CsCl type changes. At room temperature, all alloys of the ZrCo–ZrNi–Zr₂Ni–Zr₂Co subsystem should contain three phases: δ + δ₂ + θ. The solidus surface of the Zr–ZrCo ZrNi system is thus completed by surfaces corresponding to the homogeneity regions of the δ, δ₂, δ, and β phases, θ + δ + δ₂ tie-line triangle plane, and ruled surfaces representing the upper boundary of the two-phase θ + δ₂, θ + δ, and θ + δ volumes. At 900 and 800°C, two three-phase equilibria, η + θ + β and δ + δ₂ + θ, are observed in the system.

首先使用理化分析方法研究了亚固相线温度以及900和800°C下Zr–ZrCo–ZrNi系统的相平衡，并构造了900和800°C的固相表面和等温截面。具有AlCu2（θ）型四方晶体结构的同构Zr ₂ Co和Zr ₂ Ni化合物形成一系列连续的固溶体，将Zr–ZrCo–ZrNi系统分为两个子系统：Zr–Zr ₂ Co–Zr ₂ Ni和ZrCo -ZrNi锆₂的Ni-Zr的₂有限公司的Zr的Zr的固相线表面上的平衡₂共同ZrCo -锆₂ Ni体系，并在900℃下显著不同。这与Zr _3相关通过包析反应形成的Co基η相< β  - 锆> + < Zr的₂ CO >→交通 η在980℃，是接近大号 ↔  θ  +  β共晶结晶温度（986℃），在二进制的Zr合作系统。在900和800°C下，the相最多可溶解14.5％的Ni。的三元的Zr固相线表面₂共同的Zr ₂ Ni基ZrCo-ZrNi系统显示与ZrCo（δ）和ZrNi（δ的θ相的三相平衡₂）的ZrCo-ZrNi quasibinary部的阶段：δ +δ ₂+θ。随着镍在CsCl型立方ZrCo基相中的溶解度变化，该联系线三角形的平面在900和800°C时明显延伸。在室温下，将ZrCo-ZrNi -锆的所有合金₂的Ni-Zr的₂钴子系统应包含三个阶段：δ+δ ₂ +θ。所述Zr的ZrCo ZrNi系统的固相线表面因此通过对应于δ的均匀区域的表面完成的，δ ₂，δ，β相，θ+δ+δ ₂联络线三角形平面，并且排除代表的表面两相θ+δ的上边界₂，θ+δ，θ+δ的卷。在900和800℃时，两个三相平衡，η+θ+β和δ+δ ₂ +θ，在该系统中观察到。