Brazing of C/C composites and 304 stainless steels via Ni/Mo composite interlayer

Abstract

In order to improve the strength of C/C composites and 304 SS brazed joint, two substrates were brazed by adding metal interlayers (Ni, Mo, Ni/Mo) to BNi-2 or AgCuTi filler metals. The objective of this study was to investigate the microstructure, joint mechanism, and mechanical properties of the brazed joints. The findings revealed that the microstructure of the BNi-2+Ni/Mo joint consisted of Cr₃C₂, Ni(s, s), Cr _xNi _y+MoNi₄, Mo, MoNi₄+Cr _xM _y, and Ni(s, s) + Cr-Fe. The interfacial microstructure of the AgCuTi+Ni/Mo joint in the control experiment consisted of TiC, Ag(s, s) + Cu(s, s), Ni, Ag(s, s)+Cu(s, s)+MoTi, Mo, and MoTi+Cu(s, s)+Ag(s, s). Finite element simulations demonstrated that the Ni/Mo composite interlayer effectively alleviated residual stresses in the C/C substrates. The average shear strength of the BNi-2+Ni/Mo brazed joints at room temperature was found to be 2.57 MPa, while the average shear strength of the AgCuTi+Ni, Mo, and Ni/Mo joints were 10.91 MPa, 23.81 MPa, and 26.77 MPa, respectively.

Keywords

C/C composites / 304 stainless steel / vacuum brazing / composite interlayer / finite element analysis

References

[[1]] Zhang W-z, Tan M-y, Chen D-m, et al.. Sugar-derived nanocrystalline graphite matrix C/C composites with excellent ablative resistance at 3000 °C. Advanced Materials, 2024, 36(7): 2309899, J]

[[2]] Liu H-z, Yang X, Fang C-q, et al.. Ablation resistance and mechanism of SiC/ZrC-ZrB₂ double layer coating for C/C composites under plasma flame. Journal of Central South University, 2020, 27(9): 2538-2547, J]

[[3]] Zhang D-w, Zhao S-dun. Numerical study on forming complex fitting body on end of integrated stainless steel pipe without welds. Journal of Central South University, 2016, 23(2): 269-276, J]

[[4]] Peng H-l, Zhang Y-x, Chen X, et al.. Microstructure and mechanical properties of C/C composite joint brazed with Ni-based filler. Transactions of Nonferrous Metals Society of China, 2022, 32(3): 927-934, J]

[[5]] Liu D, Zhang L-x, Feng J-c, et al.. Microstructure and fracture behavior of SiO₂ glass ceramic and TC4 alloy joint brazed with TiZrNiCu alloy. Journal of Central South University of Technology, 2009, 16(5): 713-718, J]

[[6]] Guo W, Zhu Y, Wang L, et al.. Microstructure evolution and mechanical properties of vacuum-brazed C/C composite with AgCuTi foil. Materials Science and Engineering A, 2013, 564: 192-198, J]

[[76]] Guo W, Wang L, Zhu Y, et al.. Microstructure and mechanical properties of C/C composite/TC4 joint with inactive AgCu filler metal. Ceramics International, 2015, 41(5): 7021-7027, J]

[[8]] Zhang L-l, Dong H-g, Li P, et al.. Multiscale microstructural consideration of enhanced shear strength in TiAl intermetallic/K4169 alloy composite joints prepared by vacuum brazing with (Ti, Zr)-Ni-based amorphous filler metal. Journal of Materials Science & Technology, 2024, 172: 51-70, J]

[[9]] Dong K-w, Kong J, Ruan X D, et al.. Thermoplastic brazing of TiAl- and Ni-based alloys utilizing a Ni-based bulk metallic glass as the filler metal. Materials Science and Engineering A, 2021, 815: 141255, J]

[[10]] Song X-r, Li H-j, Zeng X-rong. Brazing of C/C composites to Ti6Al4V using multiwall carbon nanotubes reinforced TiCuZrNi brazing alloy. Journal of Alloys and Compounds, 2016, 664: 175-180, J]

[[11]] Shen Y-x, Li Z-l, Hao C-y, et al.. A novel approach to brazing C/C composite to Ni-based superalloy using alumina interlayer. Journal of the European Ceramic Society, 2012, 32(8): 1769-1774, J]

[[12]] Qin Y-q, Feng J-cai. Active brazing carbon/carbon composite to TC4 with Cu and Mo composite interlayers. Materials Science and Engineering A, 2009, 525(1–2): 181-185, J]

[[13]] Zhang Y-long. . Handbook of advanced composites manufacturing technology, 2003 Beijing Machinery Industry Press [M]

[[14]] Chen Z B, Bian H, Hu S P, et al.. Surface modification on wetting and vacuum brazing behavior of graphite using AgCu filler metal. Surface and Coatings Technology, 2018, 348: 104-110, J]

[[15]] Zhang S-y, Yuan Y, Su Y-y, et al.. Interfacial microstructure and mechanical properties of brazing carbon/carbon composites to stainless steel using diamond particles reinforced Ag-Cu-Ti brazing alloy. Journal of Alloys and Compounds, 2017, 719: 108-115, J]

[[16]] Qin Y-qiong. . Study on the organization and properties of C/C composites and TC4 brazed joints, 2007 Harbin Harbin Institute of Technology [D]

[[17]] Feng Q-h, Lin P-p, Ma G-l, et al.. Design of multi-layered architecture in dissimilar ceramic/metal joints with reinforcements clustering away from both substrates. Materials & Design, 2021, 198: 109379, J]

[[18]] Park J W, Mendez P F, Eagar T W. Strain energy distribution in ceramic-to-metal joints. Acta Materialia, 2002, 50(5): 883-899, J]

[[19]] Zhang G-f, Zhang Y, Bao J-d, et al.. A novel active braze composition design route for C/C composite using Fe as active element. Carbon, 2021, 181: 177-192, J]

[[20]] Wang T-p, Ivas T, Lee W, et al.. Relief of the residual stresses in Si₃N₄/Invar joints by multi-layered braze structure–Experiments and simulation. Ceramics International, 2016, 42(6): 7080-7087, J]

[[21]] Huang B-y, Li C-g, Shi L-kai. . Chinese materials engineering dictionary, 2006 Beijing Chemical Industry Press [M]

[[22]] Weil K S, Koeppel B J. Comparative finite element analysis of the stress - strain states in three different bonded solid oxide fuel cell seal designs. Journal of Power Sources, 2008, 180(1): 343-353, J]

[[23]] Williamson R L, Rabin B H, Byerly G E. Fem study of the effects of interlayers and creep in reducing residual stresses and strains in ceramic-metal joints. Composites Engineering, 1995, 5(7): 851-863, J]

[[24]] Venkatraman M, Neumann J P. The C-Cr (carbon-chromium) system. Bulletin of Alloy Phase Diagrams, 1990, 11(2): 152-159, J]

[[25]] Ba J, Ji X, Wang B, et al.. In-situ alloying of BNi2+Ni interlayer for brazing C/C composites and GH3536 Ni-based superalloy. Journal of Manufacturing Processes, 2021, 67: 52-55, J]

[[26]] Tian X-y, Qi J-l, Zhang L-x, et al.. BNi2+TiH₂ composite brazing material for brazing C/C composites with GH99 Ni-based high temperature alloy. Journal of Welding, 2014, 35(5): 35-38 [J]

[[27]] Liu D, Chen B, Jin G-b, et al.. Interfacial characteristics in CNTs-AgCuTi systems. Chinese Journal of Aeronautics, 2022, 35(4): 450-460, J]

[[28]] Wei S H, Mbaye A A, Ferreira L G, et al.. First-principles calculations of the phase diagrams of noble metals: Cu-Au, Cu-Ag, and Ag-Au. Physical Review B, 1987, 36(8): 4163-4185, J]

[[29]] Arroyave R, Eagar T W, Kaufman L. Thermodynamic assessment of the Cu-Ti-Zr system. Journal of Alloys and Compounds, 2003, 351(1–2): 158-170, J]

[[30]] Pan W, Li R-t, Chen J, et al.. Thermodynamic properties of Ti in Ag-Ti alloys. Materials Science and Engineering A, 2000, 287(1): 72-77, J]

[[31]] Tuah-poku I, Dollar M, Massalski T B. A study of the transient liquid phase bonding process applied to a Ag/Cu/Ag sandwich joint. Metallurgical Transactions A, 1988, 19(3): 675-686, J]

[[32]] Mofid M A, Barazandeh R, Jafarzadegan M. Vacuum brazing of NIMONIC 105 superalloy using W-rich BNi-10 and conventional BNi-2 fillers. JOM, 2023, 75(11): 4749-4761, J]

[[33]] Jia Y, Li T, Chen X-g, et al.. Graphite-reinforced AgCuTi/Cu foam composite filler to braze Al₂O₃ ceramic and 304 stainless steel. Ceramics International, 2023, 49(13): 21296-21307, J]

[[34]] Jiang X, Zhang G-f, Zhang Y, et al.. High temperature brazing of C/C using Hastelloy C-276 as filler and joint formation mechanism. Composites Part A: Applied Science and Manufacturing, 2023, 168: 107487, J]

[[35]] Zhou B-f, Zeng Z-c, Cai Y-c, et al.. Fem simulation and verification of brazing SiC ceramic with novel Zr-Cu filler metal. Materials, 2019, 12(20): 3380, J]

[[36]] Wang T-p, Zhang J, Lee W, et al.. Numerical analysis on the residual stress distribution and its influence factor analysis for Si₃N₄/42CrMo brazed joint. Simulation Modelling Practice and Theory, 2019, 95: 49-59, J]