In this study, the effect of lamellar and globular α-phase on mechanical properties of strongly textured Ti–6Al–4V alloy was investigated. The strong transverse texture was developed in Ti–6Al–4V alloy via α + β rolling at 950 °C. In the following, lamellar and equiaxed microstructures have been separately promoted in the Ti–6Al–4V alloy during annealing at β- and α + β regions, respectively. According to EBSD analysis, it was revealed that deformation texture was not considerably changed during different annealing processes. Then, room temperature mechanical properties of the studied alloy including uniaxial tensile, compression and bending tests were evaluated. According to the tensile test, work hardening capacity was obtained as 1.10 and 0.64 for equiaxed and lamellar microstructures, respectively. Fracture limit curve revealed that equiaxed microstructure had more extent of homogeneous deformation in comparison with lamellar one. In addition, bending properties of the Ti–6Al–4V alloy were significantly improved as a result of equiaxed microstructure.

在这项研究中，研究了层状和球状α相对强织构Ti-6Al-4V合金力学性能的影响。Ti–6Al–4V合金通过在950°C的α+β轧制形成了很强的横向织构。在下文中，Ti-6Al-4V合金在退火过程中分别在β-和α+β区域分别促进了层状和等轴组织。根据EBSD分析，发现在不同的退火过程中，变形织构没有明显改变。然后，评估了所研究合金的室温机械性能，包括单轴拉伸，压缩和弯曲测试。根据拉伸试验，对于等轴和层状显微组织，加工硬化能力分别为1.10和0.64。断裂极限曲线表明，等轴组织比片状组织具有更大程度的均匀变形。此外，由于等轴显微组织，Ti-6Al-4V合金的弯曲性能也得到了显着改善。