Explosive welding

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

doi:10.1016/b978-0-12-820787-1.00006-1

Cited by 2 publications

(2 citation statements)

References 80 publications

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“…Explosive welding (EW) has great potential to address both issues. This welding method is possible due to the high pressure produced by the explosion [ 3 , 4 ] and has several advantages over the above-mentioned thermobimetal production methods [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Morphology and Structure of Brass–Invar Weld Interface after Explosive Welding

et al. 2022

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This paper presents the results of a study of the morphology and structure at the weld interface in a brass–Invar bimetal, which belongs to the class of so-called thermostatic bimetals, or thermobimetals. The structure of the brass–Invar weld interface was analyzed using optical microscopy and scanning electron microscopy (SEM), with the use of energy-dispersive X-ray (EDX) spectrometry and back-scattered electron diffraction (BSE) to identify the phases. The distribution of the crystallographic orientation of the grains at the weld interface was obtained using an e-Flash HR electron back-scatter diffraction (EBSD) detector and a forward-scatter detector (FSD). The results of the study indicated that the weld interface had the wavy structure typical of explosive welding. The wave crests and troughs showed the presence of melted zones consisting of a disordered Cu–Zn–Fe–Ni solid solution and undissolved Invar particles. The pattern quality map showed that the structure of brass and Invar after explosive welding consisted of grains that were strongly elongated towards the area of the highest intensive plastic flow. In addition, numerous deformation twins, dislocation accumulations and shear bands were observed. Thus, based on the results of this study, the mechanism of Cu–Zn–Fe–Ni structure formation can be proposed.

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Section: Introductionmentioning

confidence: 99%

Morphology and Structure of Brass–Invar Weld Interface after Explosive Welding

et al. 2022

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“…During collision the pressure reaches up to 2 × 10 4 MPa. Such level of pressure makes it possible to obtain physical states unattainable under conventional types of loads [ 1 , 2 ]. As a result, significant residual stresses appear, deviating from the primary distribution in the combined materials [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Analysis of Explosive Welded Sheet of AA2519-Ti6Al4V with Interlayer of AA1050 Subjected to Heat-Treatment

2022

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The paper presents results of investigations of welding sheets of AA2519-Ti6Al4V, a difficult-to-joint components materials, produced by explosive welding with a thin technological interlayer of AA1050. The joining process leads to the formation of intermetalics in the vicinity of joint and generates significant residual stresses. In the next step the laminate was subjected to a heat treatment process in order to improve the mechanical properties by precipitation hardening. This treatment should not be carried out before welding because of negative influence on a ductility of the aluminum alloy. Material in this state was subjected to the tests of chemical composition, microstructure, and microhardness. A tensile test was carried out with accompanying strain analysis by the digital image correlation (DIC) method. Moreover, the residual stresses were determined which were measured by using two methods, the X-ray diffraction and the hole drilling. This approach made it possible to measure the residual stresses both in the plane parallel to the surface and in the cross section of the laminate.

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Explosive welding

Cited by 2 publications

References 80 publications

Morphology and Structure of Brass–Invar Weld Interface after Explosive Welding

Morphology and Structure of Brass–Invar Weld Interface after Explosive Welding

Mechanical Properties Analysis of Explosive Welded Sheet of AA2519-Ti6Al4V with Interlayer of AA1050 Subjected to Heat-Treatment

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