Effect of aging on microstructure and properties of hot-spunTC11 titanium alloy

doi:10.13251/j.issn.0254-6051.2021.07.024

Abstract

Abstract: Effect of aging on microstructure and mechanical properties of double annealed TC11 titanium alloy after hot spinning was studied by means of optical microscope, transmission electron microscope, X-ray diffractometer and tensile testing machine, and the optimal aging temperature range was determined. The results show that the tensile strength and hardness of the alloy after hot spinning are increased by 17% and by about 8 HRC compared with those before. After aging at 560 ℃ for 3 h, the tensile strength is increased from 1195 MPa to 1240 MPa, and the hardness is increased by about 1 HRC, the comprehensive mechanical properties and hardness are further improved. Both hot spinning and aging can promote the transition from soft and ductile phase β to strengthening phase α. The tensile strength is all higher than 1200 MPa at 300-600 ℃, and the maximum tensile strength is 1242 MPa at 580 ℃. With the increase of temperature, the elongation decreases continually and becomes less than 8% above 580 ℃. The thermodynamic calculation results show that the transition tendency of β phase to α phase is the greatest in the temperature range of 500-560 ℃, so is the most suitable temperature range of aging.

Key words: hot spinning, TC11 titanium alloy, heat treatment, mechanical properties, strengthening mechanism

CLC Number:

TG156.99

Bai Lu, Zhang Xiaojuan, Zhou Zhongping, Ni Linyu, Zhou Yindi , Min Yong'an. Effect of aging on microstructure and properties of hot-spunTC11 titanium alloy[J]. Heat Treatment of Metals, 2021, 46(7): 126-130.

References

[1] 张利军, 申伟, 安君伟. 钛合金薄壁零件的热处理技术研究[J]. 金属加工(热加工), 2015(S2): 159-161.
Zhang Lijun, Shen Wei, An Junwei. Research on heat treatment technology of titanium alloy thin-walled parts[J]. Metal Working (Hot Working), 2015(S2): 159-161.
[2] 陈学伟, 张士宏, 王忠堂, 等. 热处理工艺对TC11钛合金组织及性能的影响[J]. 金属热处理, 2007, 33(10): 48-51.
Chen Xuewei, Zhang Shihong, Wang Zhongtang, et al. Effect of heat treatment process on microstructure and properties of TC11 titanium alloy[J]. Heat Treatment of Metals, 2007, 33(10): 48-51.
[3] 王宏权, 李进元, 郭征, 等. 热变形及热处理工艺对TC11钛合金棒材显微组织和力学性能的影响[J]. 热加工工艺, 2017, 46(13): 160-162.
Wang Hongquan, Li Jinyuan, Guo Zheng, et al. Effect of hot deformation and heat treatment on microstructure and mechanical properties of TC11 titanium alloy bar[J]. Hot Working Technology, 2017, 46(13): 160-162.
[4] 杨文华, 吉卫, 周朝辉, 等. TC11钛合金构件冲锻成形工艺[J]. 锻压技术, 2017, 42(9): 14-19.
Yang Wenhua, Ji Wei, Zhou Zhaohui, et al. Stamping-forging process of titanium alloy TC11 components[J]. Forging and Stamping Technology, 2017, 42(9): 14-19.
[5] 孙海全, 倪林彧, 朱小兵, 等. TC11钛合金热旋压成形的组织及性能研究[J]. 航天制造技术, 2015(1): 32-35.
Sun Haiquan, Ni Linyu, Zhu Xiaobing, et al. Study on microstructure and mechanical properties of hot-spinning TC11 titanium alloy[J]. Aerospace Manufacturing Technology, 2015(1): 32-35.
[6] 韩栋, 毛小南, 张鹏省, 等. 双重退火温度对高应力水平TC11合金组织性能的影响[J]. 中国有色金属学报, 2010, 20(S1): 577-580.
Han Dong, Mao Xiaonan, Zhang Pengsheng, et al. Effect of double annealing temperature on microstructure and mechanical properties of TC11 alloy[J]. The Chinese Journal of Nonferrous Metals, 2010, 20(S1): 577-580.
[7] 赵民权, 董健. 固溶温度对TC11合金组织和性能的影响[J]. 金属热处理, 2015, 40(4): 139-141.
Zhao Minquan, Dong Jian. Effect of solution temperature on microstructure and properties of TC11 alloy[J]. Heat Treatment of Metals, 2015, 40(4): 139-141.
[8] 曹晓卿. 显微组织对TC11钛合金机械性能的影响[J]. 太原理工大学学报, 2001, 32(1): 61-63.
Cao Xiaoqing. The effect of microstructure on the mechanical properties of TC11 alloy[J]. Journal of Taiyuan University of Technology, 2001, 32(1): 61-63.
[9] 崔喜平, 耿林, 宋益标, 等. 高温变形与热处理对TC11钛合金组织和性能的影响[J]. 材料热处理学报, 2009, 30(2): 82-92.
Cui Xiping, Geng Lin, Song Yibiao, et al. Effect of hot plastic deformation and heat treatment on microstructure and properties of TC11 titanium alloy[J]. Transactions of Materials and Heat Treatment, 2009, 30(2): 82-92.
[10] 唐光昕, 朱张校. TC11合金在不同热处理条件下的显微组织分析[J]. 稀有金属, 2002, 26(2): 146-148.
Tang Guangxin, Zhu Zhangxiao. Microstructural analysis of TC11 alloy by different heat treatment[J]. Chinese Journal of Rare Metals, 2002, 26(2): 146-148.

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