Weldability of aluminium-copper in explosive welding

Carvalho, Giovanna; Galvão, Ivan; Mendes, R.; Leal, Rui M.; Loureiro, A.

doi:10.1007/s00170-019-03841-9

Cited by 27 publications

(10 citation statements)

References 42 publications

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“…In both these cases, the asymmetric waves at the interface are observed. Similar observations were made by Fronczek et al [ 41 ] studying Ti/Al, Shiran et al [ 42 ] for steel/Al, or by Carvalho et al [ 43 ] in the case of explosively welded Cu/Al clads. The explanation of such waves shape is associated with the significant difference in the melting temperature and density of the joined plates.…”

Section: Resultssupporting

confidence: 85%

On the Disintegration of A1050/Ni201 Explosively Welded Clads Induced by Long-Term Annealing

et al. 2021

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The paper presents the microstructure and phase composition of the interface zone formed in the explosive welding process between technically pure aluminum and nickel. Low and high detonation velocities of 2000 and 2800 m/s were applied to expose the differences of the welded zone directly after the joining as well as subsequent long-term annealing. The large amount of the melted areas was observed composed of a variety of Al-Ni type intermetallics; however, the morphology varied from nearly flat to wavy with increasing detonation velocity. The applied heat treatment at 500 °C has resulted in the formation of Al3Ni and Al3Ni2 layers, which in the first stages of growth preserved the initial interface morphology. Due to the large differences in Al and Ni diffusivities, the porosity formation occurred for both types of clads. Faster consumption of Al3Ni phase at the expense of the growing Al3Ni2 phase, characterized by strong crystallographic texture, has been observed only for the weld obtained at low detonation velocity. As a result of the extended annealing time, the disintegration of the bond occurred due to crack propagation located at the A1050/Al3Ni2 interface.

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Section: Resultssupporting

confidence: 85%

On the Disintegration of A1050/Ni201 Explosively Welded Clads Induced by Long-Term Annealing

et al. 2021

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“…This fact leads to an issue, i.e., despite a lower detonation velocity, once the thickness of explosive mixture is high, the explosive ratio will be higher, and consequently, the impact velocity will increase too. In other words, choosing a low-detonation velocity explosive does not mean that the energy of the collision will be significantly lower due to the increase in the explosive ratio [5,6,9,20].…”

Section: Energetic Mixture Analysismentioning

confidence: 99%

“…High values of this parameter often lead to welds with poor mechanical properties or even to welding failure, i.e., the separation of the welded plates after the impact [7]. In dissimilar welding, this type of failure is usually associated with the formation of a thick and continuous molten layer with intermetallic composition at the interface of the welded plates [8,9].…”

Section: Introductionmentioning

confidence: 99%

Aluminum-to-Steel Cladding by Explosive Welding

Carvalho

Galvão

Mendes

et al. 2020

Metals

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The production of aluminum-carbon steel and aluminum-stainless steel clads is challenging, and explosive welding is one of the most suitable processes to achieve them. The present work aims to investigate the coupled effect of two strategies for optimizing the production of these clads by explosive welding: the use of a low-density interlayer and the use of a low-density and low-detonation velocity explosive mixture. A broad range of techniques was used to characterize the microstructural and the mechanical properties of the welds, specifically, optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, electron backscatter diffraction, microhardness and tensile-shear testing with digital image correlation analysis. Although aluminum-carbon steel and aluminum-stainless steel have different weldabilities, clads with sound microstructure and good mechanical behavior were achieved for both combinations. These results were associated with the low values of collision point and impact velocities provided by the tested explosive mixture, which made the weldability difference between these combinations less significant. The successful testing of this explosive mixture indicates that it is suitable to be used for welding very thin flyers and/or dissimilar materials that easily form intermetallic phases.

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“…Explosive welding of clad tube [7] and multi-layer metal explosive welding [8] are also used in the production of composite plates. G.H.S.F.L.Carvalho [9]found that the weldability of aluminum-copper explosive welding is improved when copper is used as a flyer plate. Ali Arab [10] performed explosive welding on AlCoCrFeNi high entropy alloys and Al-6061 and found that due to plastic deformation and grain refinement, the hardness of aluminum increases near the interface.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Explosive Welding of Niobium-Steel

Wang¹,

Li²,

Wang³

2021

Preprint

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The aim of this work is to study the use of explosive welding to produce Niobium-Steel composite plate, which is used in nuclear industry equipment material manufacturing. The welding parameters was determined by weldability window and numerical simulation was used to predict the wave shape of the welding interface. The morphology of the interface wave was observed by scanning electron microscope. Component measurement around interface waves. The experimental samples were investigeted using mechanical tests. The results show that the explosion parameters optimized by theory and numerical simulation can be used to obtain a niobium-steel composite plate with better welding quality. It can be proved that the welding quality is better by observing the interface wave and testing the mechanical properties, it can be seen that the melting zone of the welding interface is composed of niobium and steel by the composition analysis instrument. The morphology of the welding interface wave is consistent with the numerical simulation results, and the numerical simulation shows the changes of temperature, strain, and stress during the welding process.

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Weldability of aluminium-copper in explosive welding

Cited by 27 publications

References 42 publications

On the Disintegration of A1050/Ni201 Explosively Welded Clads Induced by Long-Term Annealing

On the Disintegration of A1050/Ni201 Explosively Welded Clads Induced by Long-Term Annealing

Aluminum-to-Steel Cladding by Explosive Welding

Experimental and Numerical Study on the Explosive Welding of Niobium-Steel

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