Study on Microstructure, Texture Characteristics and Tensile Properties of TA15 Titanium Alloy Sheet
Technology Center, Xinjiang Xiangrun New Materials Technology Co., Ltd, Hami 839000, China
| Abstract: | Taking TA15 titanium alloy slab as the research object, a 1.5 mm sheet was obtained after clad rolling and annealing treatment. The microstructure, texture characteristics, mechanical properties and fracture behavior of the sheet were systematically studied by means of microstructure observation, pole figure analysis, room temperature tensile test and fracture morphology characterization. The results show that the sheet is composed of equiaxed α grains, slender strip α grains and reticular residual β phase, and the microstructure is uniform in different directions. The phase proportion and distribution state are highly consistent on the macroscopic scale, without obvious band segregation or local coarsening. The sheet presents an R-shaped texture, and the transverse and rolling direction texture strengths are 6.25 and 6.32, respectively. The in-plane texture is symmetrical and uniform. The tensile test at room temperature shows that the tensile strength (965 MPa, 962 MPa), yield strength (852 MPa, 853 MPa) and elongation (20%, 21%) of the transverse and rolling directions are very close, and there is no obvious anisotropy. This result fully indicates that under the clad lap rolling and annealing process adopted in this paper, the in-plane mechanical properties of the sheet achieve good isotropy, which is of great application value for load-bearing components under complex stress states in practical engineering. The high strength of the sheet is mainly due to the distortion energy and fine grain strengthening accumulated by deformation, and the good plasticity is attributed to the microstructure dominated by equiaxed α grains. The tensile fracture is composed of a large number of equiaxed dimples and a small number of secondary cracks, which is characterized by a ductile + quasi-cleavage mixed fracture, consistent with the excellent matching of strength and plasticity. |
| Keywords: | TA15 Titanium Alloy; Structure Morphology; Texture; Tensile Properties; Fracture Morphology |
| DOI: | 10.57237/j.mater.2026.01.002 |
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Received: 2 July 2026
Accepted: 21 July 2026
Published Online: 5 August 2026
Funding
| 1. | Key Technology Innovation Special Project of Xinjiang Uygur Autonomous Region Industry and Information Technology Department (XR/KY-XD-25003) |
| 2. | Xinjiang Uygur Autonomous Region 'Tianshan Talents' Training Program-Excellent Engineer Project (EB0214) |
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