Microstructures, properties and high-temp oxidation behaviors of Ti-45Al-8Nb-<i>x</i>Hf alloys

Wang Wei

doi:10.7513/j.issn.1004-7638.2024.05.012

Volume 45 Issue 5

Oct. 2024

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Wang Wei. Microstructures, properties and high-temp oxidation behaviors of Ti-45Al-8Nb-xHf alloys[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 91-97, 115. doi: 10.7513/j.issn.1004-7638.2024.05.012

Citation:

Wang Wei. Microstructures, properties and high-temp oxidation behaviors of Ti-45Al-8Nb-xHf alloys[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 91-97, 115. doi: 10.7513/j.issn.1004-7638.2024.05.012

Wang Wei. Microstructures, properties and high-temp oxidation behaviors of Ti-45Al-8Nb-xHf alloys[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 91-97, 115. doi: 10.7513/j.issn.1004-7638.2024.05.012

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Microstructures, properties and high-temp oxidation behaviors of Ti-45Al-8Nb-xHf alloys

doi: 10.7513/j.issn.1004-7638.2024.05.012

Wang Wei

College of Materials and Chemical Engineering, Heilongjiang Institute of Technology, Harbin 150050, Heilongjiang, China

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Received Date: 2024-03-28
Available Online: 2024-10-30
Publish Date: 2024-10-30

Abstract

Abstract

Ti-45Al-8Nb-xHf (x=0.5, 1.0, 1.5, 2) alloys were prepared by argon-protected vacuum induction melting process, and the microstructure, compressive properties and antioxidant properties of the alloys were investigated by using optical microscope (OM), scanning electron microscope (SEM), energy spectrum spectrometry (EDS), X-ray diffraction (XRD) and universal testing machine. The results show that the increase of Hf element content can maintain and refine the microstructure of the alloys, delay the transformation of the tissue at high temperature, and increase the compressive strength and compression ratio of the alloys to 1923 MPa and 25.7%, respectively, with an increase of more than 30%, which has a significant strengthening effect. The alloys have a stable TiO₂+Nb₂O₅ oxide sublayer when oxidized at 1000 ℃, which grows by oxidation at a flat interface, the size of the oxide diffusion layer is stable less than 85 μm, the oxidized quality changes linearly, and the oxidation rate curve decreases and finally reaches the stable oxidation stage. The addition of appropriate amount of Hf is conducive to strengthening the mechanical properties of the alloys and high-temperature oxidation resistance.
- Ti-45Al-8Nb-xHf,
- mechanical properties,
- microstructure,
- oxidation resistance

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References(19)

References

[1]	Chen Yuyong, Wu Jingxi. Research and advances in processing, working, microstructure, properties and industrial application of β-solidifying TiAl alloy[J]. Iron Steel Vanadium Titaniun, 2021,42(6):1-16. (陈玉勇, 吴敬玺. β相凝固TiAl合金的制备、加工、组织、性能及工业应用研究进展[J]. 钢铁钒钛, 2021,42(6):1-16. doi: 10.7513/j.issn.1004-7638.2021.06.001 Chen Yuyong, Wu Jingxi. Research and advances in processing, working, microstructure, properties and industrial application of β-solidifying TiAl alloy[J]. Iron Steel Vanadium Titaniun, 2021, 42（6）: 1-16. doi: 10.7513/j.issn.1004-7638.2021.06.001
[2]	Zhu Dongdong, Yan Jiangfei, Jin Yuliang, et al. Pressure-induced excellent corrosion resistance of Ti-45Al-8Nb alloy[J]. Materials Letters, 2024,355:135446. doi: 10.1016/j.matlet.2023.135446
[3]	Chandran Anju, Ganesan Hariprasath, Cyron Christian J. Studying the effects of Nb on high-temperature deformation in TiAl alloys using atomistic simulations[J]. Materials & Design, 2024,237:112596.
[4]	Cao Jun, Sun Tielong, Guo Zhichao, et al. Simultaneous enhancement of strength and ductility in high Nb-TiAl by Si alloying[J]. Journal of Materials Science & Technology, 2024,177:128-132.
[5]	Guo Yingchao, Liang Yongfeng, Sun Dingbang, et al. Refinement and enhancement of high-Nb TiAl alloy via in-situ precipitation of Ti₂AlC and TiB₂ nanoparticles[J]. Journal of Materials Research and Technology, 2024,29:1052-1065. doi: 10.1016/j.jmrt.2024.01.122
[6]	Imayev V M, Ganeev A A, Trofimov D M, et al. Effect of Nb, Zr and Zr+Hf on the microstructure and mechanical properties of β-solidifying γ-TiAl alloys[J]. Materials Science and Engineering: A, 2021,817:141388. doi: 10.1016/j.msea.2021.141388
[7]	Jack Nelson, Mohammad Ghadyani, Claire Utton, et al. A study of the effects of Al, Cr, Hf, and Ti additions on the microstructure and oxidation of Nb-24Ti-18Si silicide based alloys[J]. Materials, 2018,11(9):1579-1579. doi: 10.3390/ma11091579
[8]	Guo Fangyu, Holec David, Wang Jianchuan, et al. Impact of V, Hf and Si on oxidation processes in Ti-Al-N: Insights from ab initio molecular dynamics[J]. Surface & Coatings Technology, 2020,381:125125.
[9]	Takeshi Nagase, Mitsuharu Todai, Wang Pan, et al. Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and high entropy alloys[J]. Materials Chemistry and Physics, 2022,276:12-15.
[10]	Xiang Henggao, Chen Yang, Qi Zhixiang, et al. Mechanical behavior of TiAl alloys[J]. Science China Technological Sciences, 2023,66(9):2457-2480. doi: 10.1007/s11431-022-2186-9
[11]	Huang Feng, Liang Sicheng, Hu Shangxing, et al. Status and progress in strengthening and toughening of TiAl alloy[J]. Specal Casting & Nonferrous Alloys, 2023,43(11):1441-1446. (黄锋, 梁思诚, 胡尚兴, 等. TiAl合金强韧化研究现状与进展[J]. 特种铸造及有色合金, 2023,43(11):1441-1446. Huang Feng, Liang Sicheng, Hu Shangxing, et al. Status and progress in strengthening and toughening of TiAl alloy[J]. Specal Casting & Nonferrous Alloys, 2023, 43（11）: 1441-1446.
[12]	Wang Zite, Zheng Gong, Qi Zixiang, et al. Structures, microstructures, properties, and applications of TiAl alloys[J]. Chin Sci Bull, 2023,68:3259-3274. (王子特, 郑功, 祁志祥, 等. TiAl合金结构、组织、性能与应用[J]. 科学通报, 2023,68:3259-3274. doi: 10.1360/TB-2023-0037 Wang Zite, Zheng Gong, Qi Zixiang, et al. Structures, microstructures, properties, and applications of TiAl alloys[J]. Chin Sci Bull, 2023, 68: 3259-3274. doi: 10.1360/TB-2023-0037
[13]	Feng Lihan, Li Bo, Li Qiang, et al. Enhancement of mechanical properties and oxidation resistance of TiAl alloy with addition of Nb and Mo alloying elements[J]. Materials Chemistry and Physics, 2024,316:129148. doi: 10.1016/j.matchemphys.2024.129148
[14]	Tian Shiwei, Zhang Tengkun, Zeng Shangwu, et al. Cyclic oxidation kinetics and thermal stress evolution of TiAl alloys at high temperature[J]. Metals, 2023,14(1):28. doi: 10.3390/met14010028
[15]	Liu Renci, Wang Peng, Cao Ruxin, et al. Influence of thermal exposure at 700 ^oC on the microstructure and morphology in the surface of β-solidifying γ-TiAl alloys[J]. Acta Metallurgica Sinica, 2022,58(8):1003-1012. (刘仁慈, 王鹏, 曹如心, 等. 700 ℃热暴露对 β 凝固 γ-TiAl合金表面组织及形貌的影响[J]. 金属学报, 2022,58(8):1003-1012. Liu Renci, Wang Peng, Cao Ruxin, et al. Influence of thermal exposure at 700 ^oC on the microstructure and morphology in the surface of β-solidifying γ-TiAl alloys[J]. Acta Metallurgica Sinica, 2022, 58（8）: 1003-1012.
[16]	Birks Nell. Introduction to the high temperature oxidation of meatals[M]. 2nd edition. Cambridge University, 2009: 101-157.
[17]	Jin Xuchen, Ye Peihao, Ji Hongrui, et al. Oxidation resistance of powder metallurgy Ti–45Al–10Nb alloy at high temperature[J]. Int. J. Miner. Metall. Mater., 2022,29(12):2232-2240. doi: 10.1007/s12613-021-2320-4
[18]	Lai Xuping, Li Tianfang, Liu Rui, et al. Effect of Nb, Hf and Zr on oxidation resistance of γ-TiAl alloy[J]. Materials Reports, 2021, 35(Z1): 374-377. (赖旭平, 李天方, 刘瑞, 等. 元素Nb、Hf、Zr对γ-TiAl合金抗氧化性能的影响[J]. 材料导报, 2021, 35(Z1): 374-377. Lai Xuping, Li Tianfang, Liu Rui, et al. Effect of Nb, Hf and Zr on oxidation resistance of γ-TiAl alloy[J]. Materials Reports, 2021, 35(Z1): 374-377.
[19]	Wang Yanjing, Li Fei. Study on the high-temperature oxidation resistance of Ti-45Al-8(Nb, Hf, Y)-0.2B alloys[J]. Rare Metal Materials and Engineering, 2016,45(1):132-136. (王艳晶, 李菲. Ti-45Al-8(Nb, Hf, Y)-0.2B合金高温抗氧化性研究[J]. 稀有金属材料与工程, 2016,45(1):132-136. Wang Yanjing, Li Fei. Study on the high-temperature oxidation resistance of Ti-45Al-8(Nb, Hf, Y)-0.2B alloys[J]. Rare Metal Materials and Engineering, 2016, 45（1）: 132-136.