1. The effectiveness of complex alloying was established, in which the strength of both the α and β solid solutions increases, and the difference between their strengths decreases. This leads to more even plastic deformation and more complete utilization of the strength of the α and β phases. 2. The use of β stabilizing elements with distribution coefficients larger and smaller than unity is recommended in order to ensure a constant total amount of β stabilizing elements in different zones and more even decomposition of the metastable solid solution in the process of aging. 3. It was found that in terms of improving the mechanical properties of Ti+3% Al+β stabilizer alloys after heat treatment the β stabilizers are arranged in the following order: Cr, Fe, Cr+Fe, Mn, V+Fe, Mo+Fe, Mo, V, Mo+Cr, Mo+V, Mo+V+Cr+Fe. 4. Multicomponent alloy VT23 was developed, with σb ⩾ 145 kg/mm2 after heat treatment.