Microstructure development during explosive welding of metal foil：morphologies, mechanical behaviors and mechanisms

Yang, Mingshun; Xu, Jian; Ma, Honghao; Lei, Mingzhun; Ni, Xiaojun; Shen, Zhaowu; Zhang, Bingyuan; Tian, Jie

doi:10.1016/j.compositesb.2021.108685

Cited by 53 publications

(13 citation statements)

References 48 publications

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“…Fig. 3e shows the waveform formation mechanism of this theory, and the deflection effect of the salient jet on the re-entrant jet is an important reason for vortex formation [21].…”

Section: Formation Of Vortices and Melted Areamentioning

confidence: 93%

“…Fig. 7c shows the temperature field distribution at the interface of the composite plate [21]. It can be found that the interface temperature of the composite plate was extremely high, up to 2100 K, which exceeded the melting point of 1941 K of TA2 titanium and 873 K of 5083 aluminums.…”

Section: Interfacial Characterizationmentioning

confidence: 95%

“…In order to paid more accurate attention to the welding process in explosive welding, the collision velocity v p and collision angle β calculated by the above formula are used to establish the fly plate and the base plate inclined impact configuration without experimental assembly [21]. The 2D model was established by ANSYS/AUTODYN, and SPH method was used to simulate the mechanical problems of continuum such as plate collision [22,23].…”

Section: Interface Characteristic Simulationmentioning

confidence: 99%

“…It can be seen that the molten metal is broken in small pieces and enters the titanium tissue after leaving the molten metal body. During the movement of the re-entrant jet, the molten metal in it presented fluid properties [21]. The fluid had weak resistance to its own deformation and breakage, and a small part of the fluid might disengage when it moved at high speed.…”

Section: Composition Of Vortices and Melted Areamentioning

confidence: 99%

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Microstructure and characterization of Ti–Al explosive welding composite plate

Zhang

et al. 2022

Int J Adv Manuf Technol

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In order to study the interface characteristics and microstructure formation of Ti-Al composite plate, explosive welding was carried out with TA2 titanium as the fly plate and 5083 aluminums as the base plate. Optical microscope and electron microscope were used to analyze the microstructure of intermetallic compounds. SPH method was used to simulate the welding process of composite plates. The formation conditions and initial defects of intermetallic compounds were analyzed. The results show that most of the melted metal in the wave-front stays in the wave-waist region, and there was a relative velocity difference between the vortex and the titanium tissue, which led to the existence of small pieces of fragmentation. The outer layer of the vortex had higher velocity than the inner layer. The formation of Ti 3 Al, its antioxidant capacity wound lead to the formation of cracks. The temperature of outer vortex was higher than that of inner vortex, and the vortex has a transition layer of 5 μm, which is thinner than the transition layer of 8 μm between cladding plate and substrate. The jet was mostly composed of aluminum metal, and the interface jet velocity reaches 3000 m•s -1 and the interface temperature reaches up to 2100 K. Compared with the molten metal in the wave-back vortex, the jet temperature at the interface was higher, resulting in a thicker transition layer at the bonding surface. The residual stress at the interface wound cause the density of the material to increase.

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“…Fig. 3e shows the waveform formation mechanism of this theory, and the deflection effect of the salient jet on the re-entrant jet is an important reason for vortex formation [21].…”

Section: Formation Of Vortices and Melted Areamentioning

confidence: 93%

Section: Interfacial Characterizationmentioning

confidence: 95%

Section: Interface Characteristic Simulationmentioning

confidence: 99%

Section: Composition Of Vortices and Melted Areamentioning

confidence: 99%

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Microstructure and characterization of Ti–Al explosive welding composite plate

Zhang

et al. 2022

Int J Adv Manuf Technol

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“…Thus, a rapid temperature boost occurs in the neighborhood of the interface due to plastic heat dissipation. According to the previous works, [ 7–9 ] the heating rate was of the order of 10 9 K s −1 , and the local temperature could even exceed 2000 K. Due to the low melting point and high thermal conductivity of Al, the width of melting zone can even reach the order of 10 2 μm at Al/Fe EW interface, which is far higher than that of the most metal combinations under similar welding conditions. [ 10 ] These melting zones as well as the harsh thermomechanical kinetics provide a favorable condition for formation of the detrimental structures like intermetallics and various defects.…”

Section: Introductionmentioning

confidence: 96%

A New Strategy for Preparing Advanced Aluminum/Steel Joint Using Low‐Temperature Explosive Welding Technology

Yang

Wang

Chen

et al. 2023

Physica Rapid Research Ltrs

Self Cite

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Obtaining a high‐quality Al/Fe joint remains a challenging task, due to formation of the various defects associated with melting phenomenon. Herein, a new strategy, lowering of initial temperature of the welded plates, is proposed to suppress the undesirable melting zone. Contrast experiments are conducted at low temperature (−50 °C) and room temperature (25 °C), respectively, and the microstructures and mechanical properties of the achieved joints are carefully investigated. It is found that this strategy is an effective way to improve the quality of Al/Fe joint, where the melting‐related defects are significantly reduced, and the bonding strength is increased by 18% when compared to the traditional method. In addition, the lowering of initial temperature enables to preserve the original properties of the parent metals by mitigating the impact‐induced grain structure evolution. This phenomenon is first demonstrated in this work and can be employed as a processing strategy to develop an advanced Al/Fe joint.

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Explosive Welding of Aluminum and Cast Iron for Potential Transportation and Structural Applications

Sherpa,

Yu,

Inao

et al. 2023

Adv Eng Mater

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This study explores the feasibility of explosive welding to join dissimilar materials: aluminum (JIS A1050‐H24) and two cast iron types (JIS G 5501 and JIS G 5502), which are challenging to weld due to the presence of graphite in the cast iron. Further, the impact of explosive thickness (28, 38, and 47 mm) on weld quality is investigated, considering microstructure and mechanical behavior. Increasing explosive thickness correlates with a thicker local melted zone. Remarkably, in investigations, a novel morphology that diverges from conventional patterns is observed. The weld interface of explosively bonded materials exhibits anchor formation, a unique interlocking structure. These anchors play a significant role in establishing a robust mechanism between bonded surfaces. JIS A1050‐H24 shows minimal hardness variation, while cast iron exhibits significant variations with increased explosive thickness. Tensile shear tests showcase robust clad plate strength, with fractures primarily in JIS A1050‐H24 regions instead of at the interface. The highest tensile shear strength is achieved with an explosive thickness of 38 mm. Overall, explosive welding of aluminum with cast iron creates a strong, durable, and lightweight material with enhanced performance characteristics, making it promising for diverse industrial applications due to its outstanding properties.

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Microstructure development during explosive welding of metal foil：morphologies, mechanical behaviors and mechanisms

Cited by 53 publications

References 48 publications

Microstructure and characterization of Ti–Al explosive welding composite plate

Microstructure and characterization of Ti–Al explosive welding composite plate

A New Strategy for Preparing Advanced Aluminum/Steel Joint Using Low‐Temperature Explosive Welding Technology

Explosive Welding of Aluminum and Cast Iron for Potential Transportation and Structural Applications

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