The article provides systematization and comparative analysis of data for structure, phase composition, physical and mechanical properties formed within deformed pipes of semifinished products in different stages of preparing cold rolled pipes from hot-rolled pipe billets of titanium alloys PT–1M, PT–7M, Ti–3Al–2.5V. The effect of the degree of cold deformation on strain hardening of specimens from alloy hot-extruded pipes of semifinished products of the test alloys is established and on the basis of this recommendations are developed for maximum acceptable degree of deformation during cold rolling of pipes made of PT–1M, PT–7M, Ti–3Al–2.5V alloys. Deformation warming of alloys during cold rolling is evaluated. It is shown that cold rolling of pipes of the alloys studied into intermediate and final pipe workpieces with the reduction recommended contributes to the pipe strain hardening. When simulating cold rolling of pipes calculation of the Q-factor is carried out, which has a value of about 1. Cold rolling with such a value of Q-factor leads to formation of a texture of an inclined tangential prism alloying alloy from PT–1M to Ti–3Al–2.5V. It is noted that intermediate and final annealing at 680°C (PT–1M alloy), 750°C (PT–7M alloy, Ti–3Al–2.5V) of cold-rolled pipe billets studied facilitates alloy loss of strength as a result of occurrence of recrystallization and to the formation of a two-component texture {0001}±φ°TD<10–10>RD and {0001}±φ°TD<11–20>RD. Features of structure formation, phase composition, and mechanical properties of pipes in relation to alloying are considered.

本文对钛合金PT-1M、PT-7M热轧管坯制备冷轧管不同阶段的半成品变形管内形成的组织、物相组成、物理机械性能数据进行了系统化和对比分析。 ，Ti–3Al–2.5V。建立了冷变形程度对试验合金半成品合金热挤压管样品应变硬化的影响，并在此基础上制定了冷轧管材冷轧期间可接受的最大变形程度的建议。 PT–1M、PT–7M、Ti–3Al–2.5V 合金。评估冷轧期间合金的变形升温。结果表明，以推荐的压下量将所研究的合金管冷轧成中间和最终管工件有助于管应变硬化。当模拟管道冷轧时，进行Q因子计算，其值约为 1。具有这样的Q因子值的冷轧会导致由 PT– 形成倾斜切向棱柱合金合金的织构。 1M 至 Ti–3Al–2.5V。值得注意的是，所研究的冷轧管坯在 680°C（PT-1M 合金）、750°C（PT-7M 合金、Ti-3Al-2.5V）下进行中间和最终退火会导致合金强度损失。再结晶的发生以及双组分织构的形成{0001}±φ°TD<10–10>RD和{0001}±φ°TD<11–20>RD。考虑了与合金化相关的管材的结构形成、相组成和机械性能的特征。