TLP bonding of Ti−6Al−4V to Al 2024 using thermal spray Babbitt alloy interlayer

Naeimian, Hamid; Mofid, Mohammad Ammar

doi:10.1016/s1003-6326(20)65294-3

Cited by 14 publications

(7 citation statements)

References 15 publications

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“…Okamoto et al [ 36 ] demonstrated that Cu diffused into the Al substrate and formed Al 2 Cu, which was also demonstrated from the Al-Cu binary phase diagram ( Figure S4 ). Meanwhile, Figure 3 e shows that the distribution of the Mg element primarily concentrated in the brazing seam and then formed the Al 2 CuMg phase [ 15 , 32 ]. Liu et al [ 37 ] confirmed the interface energy of Al 3 Ti was the lowest, and preferentially formed on the Al substrate.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the formation of the Al-Cu eutectic liquid phase could promote the diffusion of Ti atoms into the liquid phase and produce the diffusion gradient on the TC4 side. The Al and Ti elements reacted and formed Al 3 Ti according to the Al-Ti binary phase diagram [ 15 ]. Moreover, the metastable intermediate phase of Al 5 Ti 3 was formed in the interface during the reaction, owing to insufficient atomic diffusion [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

“…At present, the methods of joining Al alloys to TC4 alloys mainly include laser welding [ 13 , 14 ], transient liquid phase (TLP) bonding [ 15 ], brazing [ 16 ], diffusion bonding [ 17 , 18 ], etc. Among them, brazing is suitable for joining dissimilar materials with a large difference in physical and chemical properties [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Contact Reactive Brazing of TC4 Alloy to Al7075 Alloy with Deposited Cu Interlayer

Yang

Niu

et al. 2021

Materials

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The brazing of Titanium alloy to Aluminum alloy is of great significance for lightweight application, but the stable surface oxide film limits it. In our work, the surface oxide film was removed by the ion bombardment, the deposited Cu layer by magnetron sputtering was selected as an interlayer, and then the contact reactive brazing of TC4 alloy to Al7075 alloy was realized. The microstructure and joining properties of TC4/Al7075 joints obtained under different parameters were observed and tested, respectively. The results revealed that the intermetallic compounds in the brazing seam reduced with the increased brazing parameters, while the reaction layer adjacent to TC4 alloy continuously thickened. The shear strength improved first and then decreased with the changing of brazing parameters, and the maximum shear strength of ~201.45 ± 4.40 MPa was obtained at 600 °C for 30 min. The fracture path of TC4/Al7075 joints changed from brittle fracture to transgranular fracture, and the intergranular fracture occurred when the brazing temperature was higher than 600 °C and the holding time exceeded 30 min. Our work provides theoretical and technological analyses for brazing TC4/Al7075 and shows potential applications for large-area brazing of titanium/aluminum.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contact Reactive Brazing of TC4 Alloy to Al7075 Alloy with Deposited Cu Interlayer

Yang

Niu

et al. 2021

Materials

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“…Babbitt’s good damping properties help reduce vibration and noise in rotating machinery. When applying Babbitt alloy coatings, various spraying technologies can be selected, including low-pressure cold spray technology, arc spray technology, flame spray technology, and thermal spray technology [ 11 , 12 , 13 , 14 ]. However, studies have shown that the interface between the coating and substrate is mechanically bonded in coatings fabricated via cold spraying or thermal spraying, which peel off at high temperatures or under relatively high loads [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Properties of Anti-Friction Coatings Deposited with Different Casting Methods

Kačinskas,

Baskutis,

Baskutienė

et al. 2024

Materials

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This article presents the research results of depositing anti-friction coatings (Babbitt) using three different casting methods: static casting, flame soldering, and clad welding. Babbitt alloy coatings deposited with different casting methods are discussed and explained in terms of changes in the coating properties, such as the microstructure, hardness, strength, and chemical composition. The results showed significant differences in the aforementioned properties, depending on the chosen coating deposition method. The results of the tests confirmed the importance of using shielding gas during deposition to ensure the chemical composition of the coating. The analysis revealed that decreases in the amounts of antimony and copper in the Babbitt coating compared with the initial concentrations were influenced by selective evaporation, oxidation, and the coating process parameters associated with different coating methods. To maintain the desired balance of mechanical properties in Babbitt coatings, it is important to control the antimony and copper contents. Clad welding deposition using a non-consumable tungsten electrode and argon shielding gas achieved a chemically stable coating quite close to the initial chemical composition of the Babbitt alloy.

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“…Niobium coatings can be deposited in a variety of ways: thermal spraying (TS), 1,2 physical vapor deposition (PVD), 3,4 magnetron sputtering, [5][6][7] ion beam assisted deposition, 8 chemical vapor deposition (CVD), 9,10 and electrodeposition. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] TS is a low cost and a high efficiency method, it is suitable for preparation of thick coatings, which do not require a high density and surface smoothness.…”

mentioning

confidence: 99%

Electrodeposition of Niobium Coatings on the Cryogyroscope Rotor

Okunev¹,

Dubrovskii²,

Kuznetsov³

2023

J. Electrochem. Soc.

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The discharge process of Nb(IV) complexes to Nb was studied by cyclic voltammetry. A galvanostatic electrolysis with the cathodic current density of 1.5•10-2 A cm-2 in the NaCl–KCl–NaF–K2NbF7 melt in contact with Nb anode was used for deposition of niobium coatings on the cryogyroscope rotor at a temperature 1023 K and a process time of 8 to 12 hours. The coatings were continuous and smooth due to the special design of the cathode. The rotation speed of the stirrer was set to 35 rpm and did not change in all experiments. Such conditions made it possible to obtain coatings with the thickness up to 150 μm. The main characteristics of the niobium coatings such as purity, roughness, nonsphericity, and superconductivity were investigated.

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TLP bonding of Ti−6Al−4V to Al 2024 using thermal spray Babbitt alloy interlayer

Cited by 14 publications

References 15 publications

Contact Reactive Brazing of TC4 Alloy to Al7075 Alloy with Deposited Cu Interlayer

Contact Reactive Brazing of TC4 Alloy to Al7075 Alloy with Deposited Cu Interlayer

Investigation of the Properties of Anti-Friction Coatings Deposited with Different Casting Methods

Electrodeposition of Niobium Coatings on the Cryogyroscope Rotor

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