Computer-aided design of explosive welding systems

Vaidyanathan, P.V.; Ramanathan, A.R.

doi:10.1016/0924-0136(93)90066-f

Cited by 18 publications

(7 citation statements)

References 5 publications

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“…where R e is the critical Reynolds number, taking values of 10.6 [26], H 1 and H 2 are the Vickers hardness numbers of AA5052 and AZ31B, taking 650 MPa and 900 MPa, respectively, ρ 1 and ρ 2 equals 2.68 g•cm −3 and 1.775 g•cm −3 , respectively. In this work, AA5052 and AZ31B alloys were set as flyer plate and base plate, respectively, with the same dimension of 210 mm × 300 mm × 0.5 mm.…”

Section: Numerical Arrangements For Explosive Weldingmentioning

confidence: 99%

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

Wang

Shi

et al. 2020

Metals

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In this work, an improved explosive welding technique was investigated to fabricate a thin Mg/Al plate, where an additional thin aluminum sheet was used as a buffer layer between the explosive and the Al plate, and the Mg plate was rigidly constrained by a steel plate to avoid excessive deformation. Moreover, the welding parameters were optimized using theoretical analysis and numerical simulation, and the interfacial behavior was simulated using the SPH method. The bonding properties of the achieved joints were investigated using microstructure observation and mechanical tests. It was concluded that this technique is an effective method for producing a thin Mg/Al composite plate. In both morphology observation and mechanical tests, an excellent bonding quality was confirmed. In addition, smoothed particle hydrodynamics (SPH) simulation revealed an extreme condition of local high temperature and plastic strain in the welding process, and the characteristic parameters of waves obtained using simulation are well congruous with the experiment.

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Section: Numerical Arrangements For Explosive Weldingmentioning

confidence: 99%

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

Wang

Shi

et al. 2020

Metals

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“…[8] Whilst the explosive welding process is generally successful, expensive failures occur and often the causes are unknown. To improve the understanding of its physical process and mechanism, a great deal of research has been carried out, [3,9,10] but so far the results have not been satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Atomic diffusion across Ni ₅₀ Ti ₅₀ —Cu explosive welding interface: Diffusion layer thickness and atomic concentration distribution

Shi-Yang

Liu

2014

Chinese Phys. B

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Molecular dynamics simulations are carried out to study atomic diffusion in the explosive welding process of Ni 50 Ti 50 -Cu (at.%). By using a hybrid method which combines molecular dynamics simulation and classical diffusion theory, the thickness of the diffusion layer and the atomic concentration distribution across the welding interface are obtained.The results indicate that the concentration distribution curves at different times have a geometric similarity. According to the geometric similarity, the atomic concentration distribution at any time in explosive welding can be calculated. Ni 50 Ti 50 -Cu explosive welding and scanning electron microscope experiments are done to verify the results. The simulation results and the experimental results are in good agreement.

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“…It is well known for its capability to directly join a wide variety of both similar 1,2 and dissimilar [3][4][5] combinations of materials that can hardly be joined by any other welding techniques. 6 Since its inception, its physical process and mechanism have received extensive attention, 2,7,8 but they are still not completely clear. Diffusion, as one of the important physical phenomena which are accelerated by explosive treatment during the welding process, has a close relationship with the morphology of the bonding interface and the welding quality.…”

Section: Introductionmentioning

confidence: 99%

Atomic diffusion behavior in Cu-Al explosive welding process

Chen

Liu

et al. 2013

Journal of Applied Physics

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A hybrid method is proposed to study atomic diffusion behavior in Cu-Al explosive welding process. The method combines molecular dynamics simulation and classical diffusion theory. Cu-Al explosive welding and scanning electron microscope experiments are done to verify the method. Using the method, we find that the atomic diffusion mostly takes place in the unloading stage of the welding process. The diffusion coefficients are collision velocity-dependent, with higher velocities generating larger coefficients. When there is no transverse velocity, the diffusion coefficient is directly proportional to the longitudinal velocity. With the longitudinal velocity fixed, the diffusion coefficient is proportional to the square of the transverse velocity. The thickness of the diffusion layer is calculated from the simulation result, and it is in good agreement with the experiment result. V

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Computer-aided design of explosive welding systems

Cited by 18 publications

References 5 publications

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

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

Atomic diffusion across Ni ₅₀ Ti ₅₀ —Cu explosive welding interface: Diffusion layer thickness and atomic concentration distribution

Atomic diffusion behavior in Cu-Al explosive welding process

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Computer-aided design of explosive welding systems

Cited by 18 publications

References 5 publications

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

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

Atomic diffusion across Ni 50 Ti 50 —Cu explosive welding interface: Diffusion layer thickness and atomic concentration distribution

Atomic diffusion behavior in Cu-Al explosive welding process

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Atomic diffusion across Ni ₅₀ Ti ₅₀ —Cu explosive welding interface: Diffusion layer thickness and atomic concentration distribution