The article provides systematization and comparative analysis of data for structural and phase states and set of physical and mechanical properties formed in deformable tube semi-finished products. Analysis includes various stages of obtaining hot-extruded tubes of titanium alloys PT-1M, PT-7M, Ti–3Al–2.5V. The relationship between characteristics of macro-, microstructure, parameters of the phases formed with spread of hardness values in the original hot-forged tube billets is established. Physical simulation of hot deformation processes of alloys with varying temperature and upsetting deformation rate is conducted. Recommendations for extrusion temperature ranges for each alloy are proposed. These recommendations are based on energy-power parameters of industrial equipment used and restrictions imposed by the structure. Evolution of the structure and change in hardness during expansion of a tube billet made from the alloys investigated are considered. Results of computer simulations of energy-power parameters of tube extrusion and their comparison with industrial experiment data are presented. Features of the structure, texture and their relationship with tube mechanical properties are established.

本文对可变形管半成品中形成的结构和相态以及物理和机械性能组的数据进行了系统化和比较分析。分析包括获得钛合金 PT-1M、PT-7M、Ti-3Al-2.5V 热挤压管的各个阶段。建立了原始热锻管坯的宏观、微观组织、形成相参数与硬度值分布之间的关系。对不同温度和镦锻变形率的合金热变形过程进行了物理模拟。提出了每种合金的挤压温度范围建议。这些建议基于所用工业设备的能源功率参数和结构所施加的限制。考虑了由所研究的合金制成的管坯在膨胀过程中的结构演变和硬度变化。介绍了管材挤出能量-功率参数的计算机模拟结果及其与工业实验数据的比较。建立了结构、织构的特征及其与管材力学性能的关系。