It is shown that the structure of alloys based on titanium nickelide, obtained by industrial technology, invariably contains titanium-rich phases of type Ti₂Ni/Ti₄Ni₂(O, N), even if the nickel concentration in the B2-phase exceeds the equiatomic composition. The volume fraction of these phases depends on the smelting method, the purity of the charge, and the technology used for subsequent ingot processing. Regression equations linking shape recovery temperatures with the concentration of nickel in the B2-phase in the quenched state are presented. On the basis of these equations, a method for calculating the volume fraction of Ti₃Ni₄ type particles released during aging is proposed.

结果表明，通过工业技术获得的基于镍钛合金的合金结构始终包含Ti ₂ Ni / Ti ₄ Ni ₂（O，N）型的富钛相，即使B2相中的镍浓度较高也是如此。超过等原子组成。这些相的体积分数取决于熔炼方法，炉料的纯度以及用于后续铸锭加工的技术。给出了将形状恢复温度与淬火状态下B2相中镍浓度联系起来的回归方程。基于这些方程，提出了一种计算时效过程中释放的Ti ₃ Ni ₄型颗粒体积分数的方法。