Experimental and Numerical Studies on Preparation of Thin AZ31B/AA5052 Composite Plates Using Improved Explosive Welding Technique

Wang, Qi; Li, Xuejiao; Shi, Biming; Wu, Yong

doi:10.3390/met10081023

Cited by 16 publications

(5 citation statements)

References 42 publications

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“…The density of 5083 aluminums at 2700 kg•m -3 is much lower than that of TA2 titanium at 4510 kg•m -3 , so the jet was more composed of aluminum metal. This is consistent with the research of Wang et al [24]. Fig.…”

Section: Interfacial Characterizationsupporting

confidence: 94%

“…7a is a simulated image of the interface of Ti-Al composite plate, and it can be found that metal jet exists on the interface. The jet can remove the oxide layer and impurities on the welding surface of composite plate and improve the welding effect of composite plate [24]. It is worth noting that the jet particles were more 5083 aluminums.…”

Section: Interfacial Characterizationmentioning

confidence: 98%

“…Mie-Grüneisen equation of state is used for TA2 titanium plate. Mie-Grüneisen equation of state describes the basic relationship between particle velocity and collision velocity, and the formula for the material when it's stretched is [24]:…”

Section: Interface Characteristic Simulationmentioning

confidence: 99%

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Microstructure and characterization of Ti–Al explosive welding composite plate

Zhang

et al. 2022

Int J Adv Manuf Technol

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In order to study the interface characteristics and microstructure formation of Ti-Al composite plate, explosive welding was carried out with TA2 titanium as the fly plate and 5083 aluminums as the base plate. Optical microscope and electron microscope were used to analyze the microstructure of intermetallic compounds. SPH method was used to simulate the welding process of composite plates. The formation conditions and initial defects of intermetallic compounds were analyzed. The results show that most of the melted metal in the wave-front stays in the wave-waist region, and there was a relative velocity difference between the vortex and the titanium tissue, which led to the existence of small pieces of fragmentation. The outer layer of the vortex had higher velocity than the inner layer. The formation of Ti 3 Al, its antioxidant capacity wound lead to the formation of cracks. The temperature of outer vortex was higher than that of inner vortex, and the vortex has a transition layer of 5 μm, which is thinner than the transition layer of 8 μm between cladding plate and substrate. The jet was mostly composed of aluminum metal, and the interface jet velocity reaches 3000 m•s -1 and the interface temperature reaches up to 2100 K. Compared with the molten metal in the wave-back vortex, the jet temperature at the interface was higher, resulting in a thicker transition layer at the bonding surface. The residual stress at the interface wound cause the density of the material to increase.

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Section: Interfacial Characterizationsupporting

confidence: 94%

Section: Interfacial Characterizationmentioning

confidence: 98%

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Microstructure and characterization of Ti–Al explosive welding composite plate

Zhang

et al. 2022

Int J Adv Manuf Technol

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“…The important thing to note is that SCG in the welding gap is poorly seen in the X-ray images due to the low density of SCG. Furthermore, the formation of the metal jet before the collision point was simulated by the smoothed-particle hydrodynamics (SPH) method [ 24 , 25 , 26 , 27 , 28 ], which showed that the temperature of the metal jet may reach 3000 K [ 21 ]. The SPH method is a computational method used for simulating the mechanics of the continuum media, such as solid mechanics and fluid flows.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Studies of the Shock-Compressed Gas Parameters in the Welding Gap

Malakhov,

Denisov,

Niyozbekov

et al. 2024

Materials

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This work is devoted to the study of the processes that take place in the welding gap during explosive welding (EW). In the welding gap, when plates collide, a shock-compressed gas (SCG) region is formed, which moves at supersonic speed and has a high temperature that can affect the quality of the weld joint. Therefore, this work focuses on a detailed study of the parameters of the SCG. A complex method of determining the SCG parameters included: determination of the detonation velocity using electrical contact probes, ceramic probes, and an oscilloscope; calculation of the SCG parameters; high-speed photography of the SCG region; measurement of the SCG temperature using optical pyrometry. As a result, it was found that the head front of the SCG region moved ahead of the collision point at a velocity of 3000 ± 100 m/s, while the collision point moved with a velocity of 2500 m/s. The calculation of the SCG temperature showed that the gas was heated up to 2832 K by the shock compression, while the measured temperature was in the range of 4100–4400 K. This is presumably due to the fact that small metal particles that broke off from the welded surfaces transferred their heat to the SCG region. Thus, the results of this study can be used to optimize the EW parameters and improve the weld joint quality.

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“…However, the joint efficiency was not 100% even for the small specimen cut off from the welded portion. The wider joined area can be obtained by explosive welding of copper and aluminum plates [21] and combinations of other different metals [22,23]. The use of lasers for the combinations of aluminum and other metals was reviewed [24].…”

Section: Introductionmentioning

confidence: 99%

Impact Joining of Pure Copper C1100 and Aluminum Alloy A6061-T6 Plates at Edges

Yamashita

Iwatsuka

Taguchi

et al. 2022

Metals

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Joining of pure copper C1100 and aluminum alloy A6061-T6 plates of 5 mm thickness was investigated. The method was developed by one of the authors, in which the newly created surfaces of a pair of plates obtained by high-speed shear were immediately in contact with a sliding motion with a small overlap length. The total processing time was just about a few milliseconds. To create the new surface, high-speed shaving was also tested. The joining was not possible for the full thickness of the plates. A sharp notch was observed at the joint boundary due to a large shear droop in the copper. Shaving decreased the shear droop, and the joint length through the plate thickness became longer. The joining performance was evaluated by a uniaxial tensile test. The joint efficiency reached 100% using the specimen cut out from the really joined boundary. The affected zone of joining was confirmed by the hardness distribution near the boundary. It was about 30% of the thickness of the plate, which was much smaller than that in welding by heat, and no softened zone was found in both materials.

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Experimental and Numerical Studies on Preparation of Thin AZ31B/AA5052 Composite Plates Using Improved Explosive Welding Technique

Cited by 16 publications

References 42 publications

Microstructure and characterization of Ti–Al explosive welding composite plate

Microstructure and characterization of Ti–Al explosive welding composite plate

Theoretical and Experimental Studies of the Shock-Compressed Gas Parameters in the Welding Gap

Impact Joining of Pure Copper C1100 and Aluminum Alloy A6061-T6 Plates at Edges

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