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LI Xiaoqiang, LOU Li, QU Shengguan, YANG Chao, LI Li. Microstructure and properties of brazing joints with a Ti-based filler of TiAl/GH536 alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(10): 80-85. DOI: 10.12073/j.hjxb.2019400267
Citation: LI Xiaoqiang, LOU Li, QU Shengguan, YANG Chao, LI Li. Microstructure and properties of brazing joints with a Ti-based filler of TiAl/GH536 alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(10): 80-85. DOI: 10.12073/j.hjxb.2019400267
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Microstructure and properties of brazing joints with a Ti-based filler of TiAl/GH536 alloy

  • 1.

    National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, China

  • 2.

    East China Jiaotong University, Nanchang 330013, China

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  • Received Date: September 05, 2018
  • Available Online: July 12, 2020
    Graphical Abstract
    • Abstract
  • Vacuum brazing of TiAl alloy and GH536 alloy with Ti-Zr-Fe-Cu-Ni-Co-Mo filler as interlayer was investigated. The microstructure of the brazed joints was characterized by employing SEM, EDS and XRD, and shear strength of the joints was analyzed in detail. Results show that the typical microstructure of the joint is given below: TiAl/layer I /layer II /layer III /layer IV /GH536. Layer I is mainly composed of Ti3Al, in which some TiAl phases are embedded. Layer II is constituted by Al3NiTi2. Layer III mainly contains AlNi2Ti, the other phases are Cr-rich (Cr, Ni, Fe)SS, Ni-rich (Cr, Ni, Fe)SS and (Ni)SS + TiNi3. In Layer IV, there are still Cr-rich (Cr, Ni, Fe)SS, but a small number of Ni-rich (Cr, Ni, Fe)SS, AlNi2Ti and (Ni)SS + TiNi3 can be observed. The shear strength first increases and then decreases in the brazing temperature range of 1 110 ~ 1 170 °C for 10 min. The diffusion of atoms and the formation of intermetallic compounds are closely related to the brazing temperature. Lower or higher brazing temperature will lead to lower joint strength. It obtains a maximum value of 183 MPa at temperature of 1 150 °C with a holding time of 10 min, and the joints are mainly fractured at layer II.
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    • References (11)
  • Cai Y S, Liu R C, Zhu Z W, et al. Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal[J]. Intermetallics, 2017, 91: 35 − 44. doi: 10.1016/j.intermet.2017.08.008
    Zhang T, Yang X, Miao K, et al. Microstructure evolution and brazing mechanism of Ti5Si3/Ti3Al composite and Ni-based superalloy joints using Ti-Zr-Cu-Ni filler alloy[J]. Materials Science & Engineering A, 2017, 713: 28 − 34.
    李 力, 李小强, 李志锋, 等. Ti-Zr-Cu-Ni-Co-Mo钎料的特性及其钎焊γ-TiAl接头的研究[J]. 稀有金属材料与工程, 2017, 46(8): 2214 − 2219.

    Li Li, Li Xiaoqiang, Li Zhifeng, et al. Characterization of Ti-Zr-Cu-Ni-Co-Mo filler and brazed γ-TiAl joint[J]. Rare Metal Materials and Engineering, 2017, 46(8): 2214 − 2219.
    Liu Xu, Huang Xiaomeng, Ma Huibin, et al. Microstructure and properties of the joints of ZrO2 ceramic/stainless steel brazed in vacuum with AgCuTi active filler metal[J]. China Welding, 2018, 27(2): 56 − 60.
    卞 红, 田 骁, 冯吉才, 等. TC4/Ti60合金钎焊接头界面组织及力学性能[J]. 焊接学报, 2018, 39(5): 33 − 36, 68.

    Bian Hong, Tian Xiao, Feng Jicai, et al. Microstructure and properties of TC4/Ti60 brazed joints[J]. Transactions of the China Welding Institution, 2018, 39(5): 33 − 36, 68.
    Li L, Li X, Hu K, et al. Effects of brazing temperature and testing temperature on the microstructure and shear strength of γ-TiAl joints[J]. Materials Science & Engineering A, 2015, 634: 91 − 98.
    陈 波, 熊华平, 毛 唯, 等. 采用Ti-Zr-Cu-Ni真空钎焊Ti3Al/Ti3Al和Ti3Al/GH536接头组织及性能[J]. 航空材料学报, 2010, 30(5): 35 − 38. doi: 10.3969/j.issn.1005-5053.2010.5.007

    Chen Bo, Xiong Huaping, Mao Wei, et al. Microstructures and properties of Ti3Al/Ti3Al and Ti3Al/GH536 joints using Ti-Zr-Cu-Ni brazing filler[J]. Journal of Aeronautical Materials, 2010, 30(5): 35 − 38. doi: 10.3969/j.issn.1005-5053.2010.5.007
    Lee M K, Lee J G. Mechanical and corrosion properties of Ti–6Al–4V alloy joints brazed with a low-melting-point 62.7Zr–11.0Ti–13.2Cu–9.8Ni–3.3Be amorphous filler metal[J]. Materials Characterization, 2013, 81(4): 19 − 27.
    Ye L, Xiong H P, Huai J F, et al. Microstructures of the TiAl joints brazed with Ti-Zr-based filler metals[J]. Welding in the World Le Soudage Dans Le Monde, 2014, 59(2): 201 − 208.
    Wang Y, Qiu Q, Yang Z, et al. Microstructure evolution and mechanical properties of Ti–43Al–9V–0.3Y alloy joints brazed with Ti–Zr–Ni–Cu + Mo composite filler[J]. Advanced Engineering Materials, 2016, 18(6): 944 − 952. doi: 10.1002/adem.201500549
    李海新, 林铁松, 何 鹏, 等. TiAl与Ni基合金接触反应钎焊接头界面组织及性能[J]. 稀有金属材料与工程, 2012, 41(11): 1945 − 1949. doi: 10.3969/j.issn.1002-185X.2012.11.014

    Li Haixin, Lin Tiesong, He Peng, et al. Interfacial structure and properties of reactive brazing joints of TiAl/Ni-based alloy[J]. Rare Metal Materials and Engineering, 2012, 41(11): 1945 − 1949. doi: 10.3969/j.issn.1002-185X.2012.11.014
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