Explosive welding of metal plates

AkbariMousavi, S.A.A.; Barrett, L.M.; Al-Hassani, S.T.S.

doi:10.1016/j.jmatprotec.2007.09.028

Cited by 120 publications

(48 citation statements)

References 3 publications

(2 reference statements)

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“…Figure 7 depicts the pressure-time curves of special points. Along the propagation of the detonation wave, the minimum pressure was obtained near the detonation points (Points 1 and 7), which can be attributed to the unstable energy during the initial detonation stage [4,30,31]. A very low pressure leads to nonbonding [30].…”

Section: Pressure Distributionmentioning

confidence: 96%

Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Liu

et al. 2017

Metals

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Abstract:In this paper, a 2D numerical model that is more physically realistic was established to simulate the complete process of Ti/Al explosive welding. Basing on the ANSYS/AUTODYN software package, the smoothed particle hydrodynamics (SPH) and arbitrary Lagrangian-Eulerian (ALE) were used for running this simulation. The numerical model can capture the typical physics in the explosive welding process, including the expansion of explosives, flyer plate bending, the impact of metal plates, jetting, and the wavy interface. The variable physical parameters during the explosive welding process were discussed. Most parts of the jet originated from the aluminum plate. According to the model, the jet velocity reached 7402 m/s. The pressure at the detonation point was too small to make the two plates to bond. The pressure could reach an order of magnitude of 10 7 kPa when the detonation energy tended to be stable and was far more than the yield strength of both materials, which resulted in an obvious narrow region of plastic strain emerging close to the collision zone. The signs of shear stresses between the two plates were the opposite. The interface morphology changed from straight to wave along the propagation of the detonation wave in the simulation, which was consistent with the experimental results.

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Section: Pressure Distributionmentioning

confidence: 96%

Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Liu

et al. 2017

Metals

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“…The earlier studies on explosive welding were mostly focused on the manufacturing procedures, explosive conditions, and bonding strength for various types of joined metals [9][10][11]. There were few studies about energy utilization rate of explosives and environmental protection.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effects of Explosive Covering on Explosive Welding of Stainless Steel to Steel

Yang

Shen

2019

Propellants Explo Pyrotec

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In order to improve the energy utilization ratio of explosives and reduce the noise and dust for explosive welding, honeycomb structure explosives covered by colloid water were put forward as explosive materials. Using 304 stainless steel and Q235 steel as flyer plate and base plate respectively, explosive welding tests were carried out with different covering thicknesses. The dynamic parameters in the collision process were obtained by experimental measurement and theoretical calculation. The microstructure of the bonding interface was observed through optical microscopy and analyzed by welding window. The results showed that, compared to the explosive welding without covering, the impact velocity of flyer plates was increased by 38.9 %, 57.5 % and 71.9 % respectively when the covering thickness was 15 mm, 30 mm and 45 mm. The impact velocity predicted by Gurney formulas was significantly larger than the measured value, however, after considering acceleration history, the calculated value was in good agreement with the experimental result. Metallographic analysis showed that wave bonding interfaces without defects such as voids and cracks were obtained when the welding conditions were within the welding window. However, voids and cracks were found at the bonding interfaces when the welding conditions were close and above to the upper limit of the welding window.

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“…Joint of the titanium resistant to aggressive environment and high strength steel finds application in chemical processing equipment. Another example of bimetallic material applications are structural transition joints used in shipbuilding industry, high loaded slide bearings, metallurgical aggregates, turbine blades, chemical reactors [1][2][3][4]. Explosive welding technology allows production of metallic composites through the use of detonation energy.…”

Section: Introductionmentioning

confidence: 99%

Identification of Residual Stress Phenomena Based on the Hole Drilling Method in Explosively Welded Steel-Titanium Composite

Karolczuk¹,

Kowalski²,

Kluger³

et al. 2014

Archives of Metallurgy and Materials

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The hole drilling method was used to determine residual stresses in bimetallic composite manufactured by explosive welding process. The analyzed bimetal consist of titanium Grade 1 (6 mm) and S355J2+N steel (40 mm). The aim of the paper is to establish the influence of the heat treatment on residual stress state in titanium layer. Residual stress calculations were performed according to standards developed by strain gauge manufacturer (TML) and ASTM standards. The main conclusion is the heat treatment considerably changes the residual stress state in titanium layer from tensile stress state (no heat treatment) to compression stress state (after the heat treatment).Keywords: explosive welding, residual stresses, bimetallic composite, titanium grade 1 W pracy przedstawiono wyniki badań naprężeń resztkowych, wyznaczonych metodą nawiercania, w bimetalu stal-tytan otrzymanego w procesie zgrzewania wybuchowego. Analizowany bimetal to kompozyt stali S355J2+N (40 mm) oraz tytanu Grade 1 (6 mm). Celem badania było ustalenie wpływu obróbki cieplnej na kierunki i wartości naprężeń własnych w warstwie tytanu. Obliczenia naprężeń resztkowych przeprowadzono przy zastosowaniu: (i) procedury zalecanej przez producenta (TML) zastosowanych rozet tensometrycznych oraz (ii) zaleceń ASTM (American Society for Testing and Materials). W wyniku badań ustalono, że zastosowana obróbka cieplna bimetalu zasadniczo zmienia stan naprężeń własnych w warstwie tytanu. Próbki bez obróbki cieplnej wykazują naprężenia resztkowe rozciągające a w próbkach po obróbce cieplnej panują naprężenia ściskające.

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Explosive welding of metal plates

Cited by 120 publications

References 3 publications

Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Numerical Simulation of Ti/Al Bimetal Composite Fabricated by Explosive Welding

Study on the Effects of Explosive Covering on Explosive Welding of Stainless Steel to Steel

Identification of Residual Stress Phenomena Based on the Hole Drilling Method in Explosively Welded Steel-Titanium Composite

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