Applications and capabilities of explosive forming

Mynors, Diane J.; Zhang, B.

doi:10.1016/s0924-0136(02)00413-2

Cited by 100 publications

(53 citation statements)

References 9 publications

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“…[1] These methods are economically beneficial and allow nanostructured materials to be obtained, for example, consolidated samples from nanometric copper powders, [2] Ni/NiAl metal-matrix composites containing up to 57 vol pct NiAl particulate, [3] new shapes of materials, [4,5] and integrally bonded composites. [6][7][8][9] These advantages make the methods suitable for a large number of technological applications.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Fronczek

Chulist

Lityńska‐Dobrzyńska

et al. 2017

Metall Mater Trans A

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The microstructure and phase composition of Al/Ti/Al interfaces with respect to their localization were investigated. An aluminum-flyer plate exhibited finer grains located close to the upper interface than those present within the aluminum-base plate. The same tendency, but with a higher number of twins, was observed for titanium. Good quality bonding with a wavy shape and four intermetallic phases, namely, TiAl 3 , TiAl, TiAl 2 , and Ti 3 Al, was only obtained at the interface closer to the explosive material. The other interface was planar with three intermetallic compounds, excluding the metastable TiAl 2 phase. As a result of a 100-hour annealing at 903 K (630°C), an Al/TiAl 3 /Ti/TiAl 3 /Al sandwich was manufactured, formed with single crystalline Al layers. A substantial difference between the intermetallic layer thicknesses was measured, with 235.3 and 167.4 lm obtained for the layers corresponding to the upper and lower interfaces, respectively. An examination by transmission electron microscopy of a thin foil taken from the interface area after a 1-hour annealing at 825 K (552°C) showed a mixture of randomly located TiAl 3 grains within the aluminum. Finally, the hardness results were correlated with the microstructural changes across the samples.

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Section: Introductionmentioning

confidence: 99%

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Fronczek

Chulist

Lityńska‐Dobrzyńska

et al. 2017

Metall Mater Trans A

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“…Thus, researchers have attempted to develop new forming processes for lightweight materials with sharp edges. High-velocity forming methods have been reported to potentially increase sheet metal formability beyond the limits of conventional forming processes [1][2][3][4]. Various highvelocity forming processes have been developed, including explosive forming (EXF), electromagnetic forming (EMF), and electrohydraulic forming (EHF).…”

Section: Introductionmentioning

confidence: 99%

Development of Electrohydraulic Forming Process for Aluminum Sheet with Sharp Edge

Shim

Kang

2017

Advances in Materials Science and Engineering

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Electrohydraulic forming (EHF), high-velocity forming technology, can improve the formability of a workpiece. Accordingly, this process can help engineers create products with sharper edges, allowing a product's radius of curvature to be less than 2 mm radius of curvature. As a forming process with a high-strain rate, the EHF process produces a shockwave and pressure during the discharge of an electrical spark between electrodes, leading to high-velocity impact between the workpiece and die. Therefore, the objective of this research is to develop an EHF process for forming a lightweight materials case with sharp edges. In order to do so, we employed A5052-H32, which has been widely used in the electric appliance industry. After drawing an A5052-H32 Forming Limit Diagram (FLD) via a standard limiting dome height (LDH) test, improvements to the formability via the EHF process were evaluated by comparing the strain between the LDH test and the EHF process. From results of the combined formability, it is confirmed that the formability was improved nearly twofold, and a sharp edge with less than 2 mm radius of curvature was created using the EHF process.

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“…The amount of deformation is limited by the occurrence of plastic instability in the form of localized necking or wrinkling. The localized neck is a very important phenomenon in determining the optimum deformation that can be imposed on a work piece [3]. The prediction of fractures in metal forming is very useful for evaluating the feasibility of a forming process.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation into Response of Circular Plates Subjected to Hydrodynamic Shock

Babaei¹

2014

IJMEA

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Abstract:In this paper, plastic deformation of the clamped mild steel and aluminum circular plates subjected to different hydrodynamic impact loading conditions are investigated. Extensive experimental tests were carried out by using a drop hammer. The experimental results presented in terms of central deflection of the plates, deflection profiles, and strain distributions. The effect of different parameters such as material properties, plate thickness, stand off distance of hammer or the transferred energy were also investigated on behavior of deformation of plate.

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Applications and capabilities of explosive forming

Cited by 100 publications

References 9 publications

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Microstructural and Phase Composition Differences Across the Interfaces in Al/Ti/Al Explosively Welded Clads

Development of Electrohydraulic Forming Process for Aluminum Sheet with Sharp Edge

Experimental Investigation into Response of Circular Plates Subjected to Hydrodynamic Shock

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