Microstructure and phase constitution near interface of Cu/Al vacuum brazing

Xia, Chunzhi; Li, Y. J.; Wang, J.; Ma, H. J.

doi:10.1179/174328407x168946

Cited by 19 publications

(4 citation statements)

References 5 publications

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“…The bonding cycle of heating, ultrasonic vibrating, solid/liquid ratio adjustment and Secondary ultrasonic dispersion and cooling are schematically illustrated in Figure 2. In order to investigate the influence of Al side heat dissipation rate as while as ultrasonic duration on semi-solid forming and brazing joint microstructure [18,[23][24][25][26][27], different experiments were designed. Firstly, under the condition of keeping the ultrasonic vibration duration unchanged, we carried out several groups of experiments under the condition of 2 K/s, 5 K/s, 7 K/s and 9 K/s (here K is the unit of thermodynamic temperature, named Kelvin, Abbreviated as K and K/s Represents the heat dissipation rate per second).…”

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Ultrasonic-Assisted Semi-Solid Forming Method and Microstructure Evolution of Aluminum/Copper Brazed Joints

Liang

Pan

Zhang

et al. 2020

Metals

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Aluminum/Copper dissimilar metal connection devices have been widely used in equipment manufacturing. Ultrasonic vibration assisted semi-solid brazing technology is beneficial to improve brazing quality by using the good flow ability and strong deformation resistance of brazing alloy when it is in a semi-solid state. In this study, a new ultrasound-assisted high-frequency induction brazing method was used to braze aluminum and copper dissimilar metals under non-vacuum conditions with non-prefabrication of brazing filler metal. In a short time, uniform semi-solid brazed joint was obtained. Detailed investigations on the effects of aluminum-substrate side (Abbreviated as Al side) heat dissipation rate and ultrasonic vibration duration on the microstructure evolution and mechanical properties of semisolid weld were conducted. The results show that the welding seam obtained by the modification method increases the microstructure uniformity of brazing joint.

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Section: Experimental Materials and Methodsmentioning

confidence: 99%

Ultrasonic-Assisted Semi-Solid Forming Method and Microstructure Evolution of Aluminum/Copper Brazed Joints

Liang

Pan

Zhang

et al. 2020

Metals

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“…Due to the differences in the melting point, thermal conductivity and thermal expansion of the two metals, the welding of copper-aluminum joints poses a major challenge [39][40][41][42][43]. Table 3 shows the main intermetallic compounds that can be formed between Cu and Al.…”

Section: Copper and Aluminummentioning

confidence: 99%

Application of Laser Welding in Electric Vehicle Battery Manufacturing: A Review

et al. 2023

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Electric vehicle battery systems are made up of a variety of different materials, each battery system contains hundreds of batteries. There are many parts that need to be connected in the battery system, and welding is often the most effective and reliable connection method. Laser welding has the advantages of non-contact, high energy density, accurate heat input control, and easy automation, which is considered to be the ideal choice for electric vehicle battery manufacturing. However, the metal materials used for the electrodes of the battery and the connectors used to connect the battery are not the same, so the different materials need to be welded together effectively. Welding different materials together is associated with various difficulties and challenges, as more intermetallic compounds are formed, some of which can affect the microstructure, electrical and thermal properties of the joint. Because the common material of the battery housing is steel and aluminum and other refractory metals, it will also face various problems. In this paper reviews, the challenges and the latest progress of laser welding between different materials of battery busbar and battery pole and between the same materials of battery housing are reviewed. The microstructure, metallographic defects and mechanical properties of the joint are discussed.

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“…Bimetallic composites are widely used in many industrial fields, such as Al/Mg [1][2][3], Al/Al [4][5][6], Al/Cu [7][8][9], and Al/Fe [10][11][12] bimetallic systems. Amidst, the Al/Al bimetallic composites may be a promising solution for the automotive and aerospace industries due to the outstanding performances of the aluminium alloys [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Microstructure of Al/Al bimetallic composites by lost foam casting with Zn interlayer

Jiang

et al. 2018

Materials Science and Technology

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A novel method named the lost foam casting (LFC) liquid–liquid compound process with a Zn interlayer was proposed to prepare the Al/Al bimetallic composites, and the microstructure of the Al/Al bimetallic composites was investigated in the present work. The results showed that the Al/Al bimetallic composites were successfully produced using the novel process. The Zn interlayer prevented different liquid metals from directly mixing. A uniform and compact metallurgical interface was obtained between the Al and the A356 aluminium alloy, which consisted of the η-Zn, α-Al rich, α + η eutectoid, and primary silicon phases. The microhardness of the interface layer was significantly higher in comparison with those of the Al and A356 matrixes.

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Microstructure and phase constitution near interface of Cu/Al vacuum brazing

Cited by 19 publications

References 5 publications

Ultrasonic-Assisted Semi-Solid Forming Method and Microstructure Evolution of Aluminum/Copper Brazed Joints

Ultrasonic-Assisted Semi-Solid Forming Method and Microstructure Evolution of Aluminum/Copper Brazed Joints

Application of Laser Welding in Electric Vehicle Battery Manufacturing: A Review

Microstructure of Al/Al bimetallic composites by lost foam casting with Zn interlayer

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