Transactions of Materials and Heat Treatment

Title：Influence of aging temperature on microstructure and mechanical properties for titanium alloys

Authors： Zhou Ping Xiong Shuqiu Zhou Lin An Wenjun

Unit： Intelligent Manufacturing Industry College Jiangxi University of Engineering Xinyu 338000 China

KeyWords： titanium alloy aging temperature aging time microstructure mechanical properties hardness

ClassificationCode：TG166

year,vol(issue):pagenumber：2025,50(6):180-186

Abstract：

The influences of different aging temperature treatments after solution at 700 ℃ on the microstructure, hardness and tensile mechanical properties of titanium alloy were studied by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, metallographic observation and mechanical testing. The results show that after aging treatment at 450-550 ℃, the microstructure of titanium alloy includes β phase and α phase which is densely precipitated on the grain boundary with the shape of staggered fine lines. After aging treatment at 550 ℃, α phase precipitated in titanium alloy is longer and wider than that at 450 ℃, and α phase grows from a fine line shape to coarse one. After treatment at different aging temperatures, titanium alloy contains stable α and β phases, and the diffraction intensity of β phase gradually increases with the increasing of aging temperature. The number of precipitated α phase in titanium alloy increases with the extension of aging time. When the aging temperature increases from 450 ℃ to 490 ℃, the yield strength of titanium alloy increases slightly, and the tensile strength changes little. When the aging temperature decreases to 390 ℃, the tensile strength reaches 1442.6 MPa. The hardness value of titanium alloy reaches the maximum at the aging temperature 450 ℃.

Funds：

江西省教育厅科学技术研究项目（GJJ2203018）

作者简介：周平（1970-），男，硕士，教授，高级工程师，E-mail：zhouping@jxue.edu.cn

Reference：

[1]肖浩,孙扬，范娟娟，等.β钛合金热处理工艺研究进展[J].金属热处理,2023,48(11): 258-265.

Xiao H，Sun Y，Fan J J，et al. Research progress on heat treatment of β titanium alloy[J]. Heat Treatment of Metals，2023，48(11): 258-265.

[2]Sun Z C,Yin L J. Study on bifurcation behavior and morphology of the secondary grain boundary α phase in TC18 titanium alloy[J]. Journal of Alloys and Compounds, 2022, 901: 163622.

[3]陈雷, 张禹森, 张启飞,等. TC18钛合金模锻件低倍组织分层机理及预测[J]. 中国有色金属学报,2023,33(2):343-352.

Chen L, Zhang Y S, Zhang Q F, et al. Mechanism for macrostructure delamination of TC18 titanium alloy die forging and its prediction[J]. The Chinese Journal of Nonferrous Metals, 2023, 33(2): 343-352.

[4]周平，熊淑秋.机械加工对钛合金性能影响研究[J].黄河科技学院学报，2024，26(8):44-47.

Zhou P，Xiong S Q. Research on the effect of mechanical processing on the properties of titanium alloy[J]. Journal of Huanghe S＆T College，2024，26(8): 44-47.

[5]李金山,唐斌，樊江昆，等.高强亚稳β钛合金变形机制及其组织调控方法[J].金属学报,2021,57(11): 1438-1454.

Li J S，Tang B，Fan J K, et al. Deformation mechanism and microstructure control of high strength metastable β titanium alloy[J]. Acta Metallurgica Sinica, 2021,57(11): 1438-1454.

[6]肖树龙，陈兆琪，荆科，等.热处理对亚稳β钛合金显微组织与性能的影响[J].中国有色金属学报，2022,32(6):1655-1664.

Xiao S L,Chen Z Q,Jing K,et al. Effect of heat treatment on microstructure and properties of metastable β titanium alloy[J]. The Chinese Journal of Nonferrous Metals,2022,32(6): 1655-1664.

[7]王庆娟，李强，孙亚玲.热机械处理对β钛合金组织性能的影响[J].金属热处理，2018,43(10):127-132.

Wang Q J,Li Q,Sun Y L.Effects of thermomechanical treatment on microstructure and mechanical properties of β titanium alloy[J].Heat Treatment of Metals, 2018,43(10):127-132.

[8]王永善,李培友,马昕迪,等. 热处理温度对生物医用 Ti87 Nb8 Sn5 合金微观组织和力学性能影响[ J]. 材料热处理学报, 2020,41(7):49-56.

Wang Y S,Li P Y,Ma X D,et al. Effect of heat treatment temperature on microstructure and mechanical properties of biomedical Ti87Nb8Sn5 alloy[J]. Transactions of Materials and Heat Treatment,2020,41(7):49-56.

[9]张红菊,郭荣贵,张东晖,等.钛合金相变点与微观组织研究[J].稀有金属,2024,48(10):1388-1395.

Zhang H J，Guo R G， Zhang D H，et al. Transformation temperature of titanium measured by DSC[J]. Chinese Journal of Rare Metals, 2024,48(10):1388-1395.

[10]薛克敏，郭威威，时迎宾, 等. TA15 钛合金多向锻压组织和拉伸性能研究[J]. 稀有金属材料与工程, 2019，48（10）：3340-3345.

Xue K M, Guo W W, Shi Y B，et al. Microstructure and tensile properties of multi-directional forging of TA15 titanium alloy[J]. Rare Metal Materials and Engineering, 2019，48（10）：3340-3345.

[11]陈强，王庆娟，王鼎春, 等. 锻件组织不均匀性对新型近β钛合金组织与力学性能的影响[J]. 中国有色金属学报, 2018,28（1）：87-96.

Chen Q, Wang Q J, Wang D C，et al. Effect of microstructure inhomogeneity of forgings on microstructure and mechanical properties of new near β titanium alloy[J]. The Chinese Journal of Nonferrous Metals,2018，28（1）：87-96.

[12]王浩楠, 和正华, 张思倩, 等. 时效温度对Ti-35Nb-5Ta-7Zr合金α相特征及力学性能和腐蚀行为的影响[J]. 材料热处理学报, 2024，24（10）：68-96.

Wang H N, He Z H, Zhang S Q，et al. Effect of aging temperature on α-phase characteristics, mechanical properties and corrosion behavior of Ti-35Nb-5Ta-7Zr alloy[J]. Transactions of Materials and Heat Treatment,2024，24（10）：68-96.

[13]李世键，胡福常，马蓼奕, 等. 时效处理对固溶冷拉态TB9钛合金组织与性能的影响[J]. 金属热处理,2024,49（9）:251-254.

Li S J,Hu F C,Ma L Y,et al. Effect of aging treatment on microstructure and properties of solution treated and cold-drawn TB9 titanium alloy[J]. Heat Treatment of Metal,2024，49（9）：251-254.

Service：

【This site has not yet opened Download Service】【Add Favorite】