The effects of Zr level in Ti-Zr-Cu-Ni brazing fillers for brazing Ti-6Al-4V

Jing, Yukai; Gao, Xingqiang; Su, Diyao; Zhao, Chaoying; Jiang, Jun

doi:10.1016/j.jmapro.2017.11.005

Cited by 15 publications

(7 citation statements)

References 19 publications

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“…Figure 2 a,b shows the SEM images of TiBw/Ti-6Al-4V joint brazed using Ti-Cu-Ni-Zr amorphous brazing filler metal at brazing temperature of 940 °C for 2 h. The images show that no micro-crack and pore appeared in the joints. Based on pervious results obtained by other scholars [ 12 , 13 , 14 ]; normally, the brazed joints include two parts: fusion zone (FZ) and diffusion zone (DZ). However, no evident boundary was observed between this two zones in this study.…”

Section: Resultsmentioning

confidence: 99%

“…To study the concrete composition of granular compounds, we implemented the EDS surface scanning of bright needle-like phase under magnified SEM image, and the results are displayed in Figure 2 d. The EDS maps show that Cu and Ni were aggregated in the bright needle-like phase. Jing et al [ 13 , 14 ] once explored the effect of Ti-Zr-Cu-Ni brazing filler metal on Zr during Ti-6Al-4V brazing. Jing believed during brazing, Zr can be dissolved into α and β-Ti phases to exert a solution-strengthening effect or form Ti-Zr-Cu-Ni compounds when the Zr content in the brazing filler metal is high enough (>18%).…”

Section: Resultsmentioning

confidence: 99%

“…According to Jing et al [ 13 ], when Ti-Cu-Ni-Zr brazing filler metal was used for Ti-6Al-4V brazing, the result was enhanced at a brazing temperature of over 900 °C. The liquidus temperature of the filler metal was around 920 °C, and the β-phase transition temperature of Ti-6Al-4V was approximately 995 °C.…”

Section: Methodsmentioning

confidence: 99%

“…Considering that TiB has stable high-temperature thermodynamic properties and will not experience chemical reaction with fusion brazing filler metal, the research on Ti-6Al-4V brazing will be of a certain reference value to TiB w /Ti-6Al-4V. During the brazing process of Ti-6Al-4V, Pang et al [ 9 ], Ba et al [ 10 ], Shi et al [ 11 ], Galindo [ 12 ], and Jing et al [ 13 ] used Zr-, Cu-, and Ni-containing brazing filler metals as interlayers. Zr is completely miscible with Ti, thus exerting the solution a strengthening effect and improving joint strength hardness [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Microstructure and Mechanical Properties of TiBw/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal

Tian

Hou

et al. 2021

Materials

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TiB crystal whiskers (TiBw) can be synthesized in situ in Ti alloy matrix through powder metallurgy for the preparation of a new type of ceramic fiber-reinforced Ti matrix composite (TMC) TiBw/Ti-6Al-4V. In the TiBw/Ti-6Al-4V TMC, the reinforced phase/matrix interface is clean and has superior comprehensive mechanical properties, but its machinability is degraded. Hence, the bonding of reliable materials is important. To further optimize the TiBw/Ti-6Al-4V brazing technology and determine the relationship between the microstructure and tensile property of the brazed joint, results demonstrate that the elements of brazing filler metal are under sufficient and uniform diffusion, the microstructure is the typical Widmanstätten structure, and fine granular compounds in β phase are observed. The average tensile strength of the brazing specimen is 998 MPa under room temperature, which is 97.3% of that of the base metal. During the high-temperature (400 °C) tensile process, a fracture occurred at the base metal of the highest tensile test specimen with strength reaching 689 MPa., and the tensile fracture involved a combination of intergranular and transgranular modes at both room temperature and 400 °C. The fracture surface has dimples, secondary cracks are generated by the fracture of TiB whiskers, and large holes form when whole TiB whiskers are removed. The proposed algorithm provides evidence for promoting the application of TiBw/Ti-6Al-4V TMCs in practical production.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of the Microstructure and Mechanical Properties of TiBw/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal

Tian

Hou

et al. 2021

Materials

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“…The open literature reports many studies focusing on the brazing of similar titanium alloys [21,22], but less attention has been paid to the brazing of dissimilar ones [23]. Brazing the β-Ti alloy (Ti-15Mo-5Zr-3Al) with clad Ti-15Cu-15Ni filler foil has been investigated [20].…”

Section: Introductionmentioning

confidence: 99%

Dissimilar Brazing of Ti–15Mo–5Zr–3Al and Commercially Pure Titanium Using Ti–Cu–Ni Foil

et al. 2021

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Dissimilar brazing of Ti–15Mo–5Zr–3Al (Ti-1553) to commercially pure titanium (CP-Ti) using Ti–15Cu–15Ni foil was performed in this work. The microstructures in different sites of the brazed joint showed distinct morphologies, which resulted from the distributions of Mo, Cu, and Ni. In the brazed zone adhered to the Ti-1553 substrate, the partitioning of Mo from the Ti-1553 into the molten braze caused the formation of stabilized β-Ti without Ti2Cu/Ti2Ni precipitates. In the CP-Ti side, the brazed joint displayed a predominantly lamellar structure, composed of the elongated primary α-Ti and β-transformed eutectoid. The decrease in the Mo concentration in the brazed zone caused the eutectoid transformation of β-Ti to Ti2Cu + α-Ti in that zone. The diffusion of Cu and Ni from the molten braze into the CP-Ti accounted for the precipitation of Ti2Cu/Ti2Ni in the transformed zone therein. The variation in the shear strength of the joints was related to the amount and distribution of brittle Ti2Ni compounds. Prolonging the brazing time, the wider transformed zone, consisting of coarse elongated CP-Ti interspersed with sparse Ti2Ni precipitates, was responsible for the improved shear strength of the joint.

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Friction Stir Brazing and Friction Stir Vibration Brazing

Bagheri,

Abbasi

2024

Friction Stir Welding and Processing

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The effects of Zr level in Ti-Zr-Cu-Ni brazing fillers for brazing Ti-6Al-4V

Cited by 15 publications

References 19 publications

Analysis of the Microstructure and Mechanical Properties of TiBw/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal

Analysis of the Microstructure and Mechanical Properties of TiBw/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal

Dissimilar Brazing of Ti–15Mo–5Zr–3Al and Commercially Pure Titanium Using Ti–Cu–Ni Foil

Friction Stir Brazing and Friction Stir Vibration Brazing

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