Design for quality explosive welding

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

doi:10.1016/0924-0136(92)90200-c

Cited by 29 publications

(10 citation statements)

References 2 publications

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“…Different morphology with big waveform and mini waveform is present in the explosively bonded interface without cracks and localized melting as shown in Figure 4a and c. The formation of wavy morphology is deemed as one of the indicators of sound joints 26 . Vaidyanathan et al 27 have explained that the formation of wavy morphology should be created to obtain optimum weld strength and mechanical interlocking. Cheng et al 28 attributed the wave Zhang et al 7 reported similar results that the thin diffusion layer was formed in the Al/Mg composites.…”

Section: Characterization Of Bonding Interfacementioning

confidence: 99%

Microstructure and Mechanical Properties of AA6061/AZ31B/AA6061 Composite Plates Fabricated by Vertical Explosive Welding and Subsequent Hot Rolling

et al. 2018

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In this study, three-ply Al/Mg/Al composite plates were successfully achieved by vertical explosive welding (EXW) method. After EXW, the sound joints were obtained. Then thin three-ply Al/Mg/Al EXWed composite plates with the thickness of 1.78 mm were achieved by hot rolling. The influence of annealing on the interface microstructures and mechanical properties of the thin composite plates was investigated. The results indicated that different morphology with big waveform and mini waveform was present in the explosively bonded interface. The interface shear strength was 91MPa for big waveform side and 92Mpa for mini waveform side. The rolled sample without annealing possessed the high ultimate tensile strength (UTS) value of 235Mpa and elongation of 8.5%. The equiaxed and homogeneous grain morphology of magnesium alloys in the thin three-ply Al/Mg/Al composite plates could be induced by annealing 300°C for 1 h. This contributed to the considerable increase of elongation by 18.5%.

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Section: Characterization Of Bonding Interfacementioning

confidence: 99%

Microstructure and Mechanical Properties of AA6061/AZ31B/AA6061 Composite Plates Fabricated by Vertical Explosive Welding and Subsequent Hot Rolling

et al. 2018

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“…However, these studies primarily focused on the influence of separate parameter, δ 0 or S, and kept another parameter as a constant in the PEW experiments. The selection of welding parameters was usually done based on the weldability window [21], which consisted of the collision angle β and detonation velocity V c and were built by different researchers (lower limit [22], upper limit [23,24], left limit [18,25] and right limit [26]). But the parameters obtained through the weldability window had certain non-intuitiveness and uncertainty, requiring workers to determine the parameters through their actual experience.…”

Section: Introductionmentioning

confidence: 99%

A dynamic study of effect of multiple parameters on interface characteristic in double-vertical explosive welding

Sun

Shi

Fang

et al. 2020

Mater. Res. Express

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Previous studies focused on the research of single parameters on the bonding quality of explosive welded composite plates. To explore the dynamic influence of multiple parameters on the interface, a VST (velocity, stand-off gap and charge thickness) function was proposed. The three-dimensional diagram clearly and intuitively showed that the collision velocity was comprehensively affected by the explosive thickness and stand-off gap. Four different sets of parameters were chosen and the composite plates were successfully manufactured in the experiment of double vertical explosive welding (DVEW). The interface morphology, element distribution and the mechanical property were discussed respectively. The optical microscope showed that all the samples were wavy interface but the dimensions of the ripples was different. The defects, such as melting layer and island region, appeared less frequently at bonding interface when the collision velocity was lower. The grain refinement, adiabatic shear bands were found at the crest and side of wave respectively. The width of elements diffusion layer of joint increased in line with higher collision velocity. It was indicated the maximum microhardness reached 293HV at the bonding interface due to work hardening. Shear and tensile tests suggested the the mechanical property of large wave was better than that of small wavy interface. The fracture morphology showed obvious stratification and the dimple at the bonding interface was smaller in diameter and less plastic.

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“…A notable characteristic of explosive welding is the formation of waves at the interface between the welded materials. In comparison with the other occurring interface geometries, flat/smooth or continuous melted, the wavy interface is the one producing the best welding characteristics [13][14][15][16][17]. For this reason, the mechanism of wave formation in explosive welding has been studied for years [18; 19].…”

Section: Introductionmentioning

confidence: 99%

Effect of explosive characteristics on the explosive welding of stainless steel to carbon steel in cylindrical configuration

Mendes¹,

Ribeiro²,

Loureiro³

2013

Materials & Design

148

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The aim of this research is to study the influence of explosive characteristics on the weld interfaces of stainless steel AISI 304L to low alloy steel 51CrV4 in a cylindrical configuration. The effect of ammonium nitrate-based emulsion, sensitized with different quantities and types of sensitizing agents (hollow glass microballoons or expanded polystyrene spheres) and Ammonium Nitrate Fuel Oil (ANFO) explosives on the interface characteristics is analyzed. Research showed that the type of explosive and the type and proportion of explosive sensitizers affect the main welding parameters, particularly collision point velocity. The morphology of the wavy weld interfaces, chiefly the amplitude and length of the waves, is affected both by the impact velocity and the type and particle size of the explosive sensitizers, and increases with particle size. All the weld interfaces, except welds done with ANFO, displayed localized melted and solidified regions, whose chemical composition resulted from the contribution of both flyer and base metal.

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Design for quality explosive welding

Cited by 29 publications

References 2 publications

Microstructure and Mechanical Properties of AA6061/AZ31B/AA6061 Composite Plates Fabricated by Vertical Explosive Welding and Subsequent Hot Rolling

Microstructure and Mechanical Properties of AA6061/AZ31B/AA6061 Composite Plates Fabricated by Vertical Explosive Welding and Subsequent Hot Rolling

A dynamic study of effect of multiple parameters on interface characteristic in double-vertical explosive welding

Effect of explosive characteristics on the explosive welding of stainless steel to carbon steel in cylindrical configuration

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