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 |
View:
Downloads:
收稿日期: 2026-07-02
接受日期: 2026-07-21
在线出版日期: 2026-08-05
基金
| 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) |
参考文献
| [1] | Peng A, Bai X, Luo X, et al. Surface strengthening of additively manufactured titanium alloy: combined laser shock and shot peening for enhanced mechanical and fatigue properties [J]. International Journal of Fatigue, 2026, 212109803-109803. https://doi.org/10.1016/J.IJFATIGUE.2026.109803 |
| [2] | Zhao Z, Cai L, Kanwal A, et al. Improved wear and corrosion resistance of TA15 alloy by SiC-reinforced and PDA/PTFE-sealed PEO coatings [J]. Smart Materials in Manufacturing, 2027, 5100138-100138. https://doi.org/10.1016/J.SMMF.2026.100138 |
| [3] | Tang X, Zhu Z, Wang D. Comparative analysis of dissolution characteristics of TA12A and TA15 during counter-rotating electrochemical machining process [J]. Electrochimica Acta, 2026, 574149334-149334. https://doi.org/10.1016/J.ELECTACTA.2026.149334 |
| [4] | Zhang Y, Li Z, Che S, et al. Wall-Thickness-Dependent Microstructural Evolution and Mechanical Response of LPBF-Fabricated TA15 Titanium Alloy: The Role of Post-Solidification Cyclic Reheating [J]. Materials, 2026, 19(11): 2341-2341. https://doi.org/10.3390/ma19112341 |
| [5] | Hou M, Zhang J, Ding D, et al. Annealing microstructure evolution and strength-ductility analysis of TA15 alloy sheet [J]. Journal of Alloys and Compounds, 2026, 1071188747-188747. https://doi.org/10.1016/j.jallcom.2026.179662 |
| [6] | Zhu X, Ran X, Wang Z, et al. High-performance and cost-affordable Ti-6. 5Al-2Zr-1Mo-1V fabricated by additive manufacturing via changing feedstock powder [J]. Journal of Alloys and Compounds, 2025, 1021179662-179662. https://doi.org/10.1016/j.jallcom.2025.179662 |
| [7] | Yang L, Ding Y, Zheng W, et al. Effect of deformation on ultrasonic testing results of TA15 titanium alloy ring forgings [J]. Practical Metallography, 2026, 63(4): 240-255. https://doi.org/10.1515/PM-2026-0017 |
| [8] | Liu X, Zhang C, Zhang Q, et al. Liner plate rolling temperature-mediated microstructure and strengthening/softening mechanisms in near-α titanium alloy sheets [J]. Journal of Alloys and Compounds, 2026, 1075189254-189254. https://doi.org/10.2139/ssrn.6367461 |
| [9] | Qin X, Li B, Lin P, et al. Study on the forging-free direct rolling process and the microstructure and mechanical properties of EBCHM Ti-6Al-4 V titanium alloy [J]. Materials Letters, 2026, 421141092-141092. https://doi.org/10.1016/j.matlet.2026.141092 |
| [10] | Liu B, Deng X, Wu C, et al. Warm caliber rolling metastable β titanium alloy to obtain high strength and ductility by high-density low-angle grain boundary and deformation twinning [J]. Journal of Alloys and Compounds, 2026, 1051185933-185933. https://doi.org/10.1016/j.jallcom.2026.185933 |
| [11] | Li M, Yang J, Zhu L, et al. Texture inheritance in a hot-rolled Ti–5Al–3Mo–3Cr–1Zr–0. 15Si alloy sheet upon annealing treatments [J]. Materials Letters, 2026, 421141012-141012. https://doi.org/10.1016/j.matlet.2026.141012 |
| [12] | Xiang Y, Zheng W, Fu Q, et al. Effect of solution cooling rate on microstructural evolution and mechanical properties of a dual phase titanium alloy [J]. Journal of Alloys and Compounds, 2026, 1071188887-188887. https://doi.org/10.1016/J.JALLCOM.2026.188887 |
| [13] | Zhao H, Xin S, Zhou W, et al. The influence of heat processing on the microstructure and properties of a high-strength titanium alloy [J]. Materials & Design, 2025, 257114554-114554. https://doi.org/10.1016/j.matdes.2025.114554 |
| [14] | Li G, Chen X, Son S, et al. Making Lamellar Structures of Dissimilar Titanium Alloys Ductile by Strain Partitioning and Heterogeneous Dimples [J]. Metals and Materials International, 2025, 32(7): 1-9. https://doi.org/10.1007/s12540-025-02112-5 |
