Atomistic simulation on the formation mechanism of bonding interface in explosive welding

2022 ◽  
Vol 131 (2) ◽  
pp. 025903
Author(s):  
Jianrui Feng ◽  
Rui Liu ◽  
Kaiyuan Liu ◽  
Qiang Zhou ◽  
Rongjie Yang ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Atomistic Simulation ◽  
Explosive Welding ◽  
Bonding Interface

scholarly journals The Interfacial Characterization and Performance of Cu/Al-Conductive Heads Processed by Explosion Welding, Cold Pressure Welding, and Solid-Liquid Casting

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 237 ◽  
Author(s):  
Yanni Wei ◽  
Hui Li ◽  
Fu Sun ◽  
Juntao Zou
Keyword(s):  
Corrosion Resistance ◽  
Bonding Strength ◽  
Explosive Welding ◽  
Slag Inclusion ◽  
Explosion Welding ◽  
Bonding Interface ◽  
Pressure Welding ◽  
And Performance ◽  
Solid Liquid ◽  
Cold Pressure

The Cu/Al composites conductive head is widely used in hydrometallurgy as the core component of cathode plate. Its conductive properties directly affect the power consumption, and the bonding strength and corrosion resistance determine the conductive head service life. The Cu/Al conductive head prepared by explosion welding, cold pressure welding, and solid-liquid casting methods were investigated in this paper. The interface microstructure and compositions were examined by scanning electron microscope and X-ray energy dispersive spectrometry. The bonding strength, interface conductivity, and the corrosion resistance of three types of joints were characterized. The Cu/Al bonding interface produced by explosive welding presented a wavy-like morphology with typical defects and many of brittle compounds. A micro-interlocking effect was caused by the sawtooth structures on the cold pressure welding interface, and there was no typical metallurgical reaction on the interface. The Cu/Al bonding interface prepared by solid-liquid casting consisted mainly of an Al-Cu eutectic microstructure (Al2Cu+Al) and partial white slag inclusion. The thickness of the interface transition layer was about 200–250 µm, with defects such as holes, cracks, and unwelded areas. The conductivity, interfacial bonding strength, and corrosion resistance of the conductive head prepared by explosive welding were superior to the other two.

Formation of bonding interface in explosive welding—a molecular dynamics approach

2019 ◽  
Vol 31 (41) ◽  
pp. 415403 ◽  
Author(s):  
Jianrui Feng ◽  
Kaida Dai ◽  
Qiang Zhou ◽  
Jing Xie ◽  
Rongjie Yang ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Explosive Welding ◽  
Bonding Interface

scholarly journals Microstructural, Mechanical and Corrosion Investigations of Ship Steel-Aluminum Bimetal Composites Produced by Explosive Welding

Metals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 544 ◽  
Author(s):  
Yakup Kaya
Keyword(s):  
Explosive Welding ◽  
Energy Dispersive Spectrometry ◽  
Salt Spray ◽  
Composite Plates ◽  
Bonding Interface ◽  
Steel Plates ◽  
Neutral Salt ◽  
Aluminum Plates ◽  
Bimetal Composite

In this study, explosive welding was used in the cladding of aluminum plates to ship steel plates at different explosive ratios. Ship steel-aluminum bimetal composite plates were manufactured and the influence of the explosive ratio on the cladded bonding interface was examined. Optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS) studies were employed for the characterization of the bonding interface of the manufactured ship steel-aluminum bimetal composites. Tensile-shear, notch impact toughness, bending and twisting tests, and microhardness studies were implemented to determine the mechanical features of the bimetal composite materials. In addition, neutral salt spray (NSS) tests were performed in order to examine the corrosion behavior of the bimetal composites.

Microstructure of Bonding Interface in Explosively Welded Metal/Ceramic Clad

2010 ◽  
Vol 638-642 ◽  
pp. 3775-3780 ◽  
Author(s):  
Seiichiro Ii ◽  
Chihiro Iwamoto ◽  
Shinobu Satonaka ◽  
Kazuyuki Hokamoto ◽  
Masahiro Fujita
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Silicon Nitride ◽  
Electron Diffraction ◽  
Electron Diffraction Pattern ◽  
Explosive Welding ◽  
Bonding Interface ◽  
X Ray ◽  
Transmission Electron ◽  
Metal Ceramic

Bonding interface in aluminum (Al) and silicon nitride (Si3N4) clad fabricated by explosive welding has been investigated by transmission electron microscopy (TEM). The nanocrystalline region was clearly observed at the interface between Al and Si3N4. Electron diffraction pattern and energy dispersive X-ray spectroscopy (EDS) measurements across the interface revealed that this nanocrystalline region consist of the only aluminum.

Study on Fabrication and Bonding Interface of Explosive Welded Steel/Aluminum/Steel Composite Plate

2017 ◽  
Vol 753 ◽  
pp. 188-193
Author(s):  
Nan Zhou ◽  
Jing Jiang ◽  
Kui Tang ◽  
Song Ze Tang
Keyword(s):  
Vickers Hardness ◽  
Bonding Strength ◽  
Composite Plate ◽  
Explosive Welding ◽  
Composite Plates ◽  
Bonding Interface ◽  
Dissimilar Metal ◽  
Metal Plates ◽  
Steel Composite ◽  
Layer Steel

In order to study the explosive welding experimental fabrication technology of multi-layer dissimilar metal plates and the quality of bonding interface, three-layer steel/aluminum/steel composite plates with different thickness distributions were fabricated using the method of explosive welding when their total thicknesses remained same (total 5 mm). Then the stereomicroscope was adopted to investigate the shape of bonding interface and the formed mechanism was also analyzed. In addition, the micro-hardness (Vickers hardness, Hv) distribution of the composite plate in the thickness direction was studied by a low load Vickers hardness tester. The results show that the method of explosive welding can be used to fabricate three-layer steel/aluminum/steel dissimilar metal plates successfully. Meanwhile, wave bonding interface was formed between steel fly plate and aluminum middle plate, straight bonding interface was formed between aluminum middle plate and steel base plate. The maximum Hv value of welded plate appears at the bonding interface with high bonding strength. The bonding strength of both two kinds of welded interface was considered sufficient, which offers experimental support for the explosive welding of multi-layer plates.

Interface and Bonding Strength of Explosively Welded T2/DT4C Laminate

2013 ◽  
Vol 785-786 ◽  
pp. 1051-1054
Author(s):  
Peng Liu ◽  
Jian Ping Jiang ◽  
Bai Lian Sun
Keyword(s):  
Bonding Strength ◽  
Pure Iron ◽  
Explosive Welding ◽  
Shear Test ◽  
Copper Plate ◽  
Strength Test ◽  
Bonding Interface ◽  
Interfacial Zone ◽  
Iron Plate ◽  
Element Diffusion

T2 red copper plate and DT4C electrical pure iron plate were cladded by explosive welding. Microcosmic analysis and bonding strength of the bonding interface were also studied. Results indicate that the welded zone appears periodical wavy metallurgical interface and obvious element diffusion occurs in the interfacial zone. In addition, no separation happens after the bonding strength test and tension-shear test and the broken zone takes place in the T2 red copper part of the samples, indicating that the bonding strength of the welded interface can get no less than the strength of T2 red copper.

scholarly journals Investigation of Copper-Aluminium Composite Materials Produced by Explosive Welding

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 780 ◽  
Author(s):  
Yakup Kaya
Keyword(s):  
Explosive Welding ◽  
Cold Deformation ◽  
Experimental Studies ◽  
Bonding Interface ◽  
Aluminium Composite ◽  
Bending Tests ◽  
Welding Method ◽  
Wavy Structure ◽  
Deformation Hardening ◽  
Hardness Values

Aluminium and copper are two metals frequently used in the automotive and aerospace industries due to their properties of lightness and high conductivity. In this study, copper and aluminium plates were joined using the explosive welding method. The effects of the explosive ratio on the properties of the bonding interface were investigated. Results of the experimental studies showed that the bonding interface changed from a slightly wavy structure to a completely wavy structure as the explosive ratio was increased. It was found that due to the cold deformation resulting from the collision of the flyer and parent plates during the explosion, there was an increase in the hardness values near the bonding interface and on the outer surfaces of the plates. The increase in deformation hardening along with the increasing explosive ratios led to the reduced impact toughness of the composites. In the results of the tensile-shear and bending tests, no separation or fracturing was seen in the bonding interfaces at any of the explosive ratios. As a result, it was seen that the explosive welding method can be used in combining copper and aluminium materials.

A Study on Weldability of Aluminum Alloy-Aluminum-Steel Transition Joints

2013 ◽  
Vol 631-632 ◽  
pp. 713-716 ◽  
Author(s):  
Jian Min Wang ◽  
Yan Zhang
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Explosive Welding ◽  
Marked Change ◽  
Bonding Interface ◽  
Interface Bonding ◽  
Explosive Cladding ◽  
Remarkable Effect ◽  
Welding Technology ◽  
Bonding Properties

Aluminum alloy-aluminum-steel cladding plates were manufactured by explosive welding. Microstructures of the cladding plates were observed and the interface bonding properties were tested. Aluminum alloy-aluminum-steel transition joints were produced by welding the explosive cladding plates. The bonding interface configuration and property were investigated and tested after welding. The effects of welding technology on the interface bonding properties were discussed. The results showed that metallurgical behavior has been occurred at the bonding interfaces between aluminum alloy and aluminum and aluminum and steel. Regular sine waves have appeared on the bonding interface between aluminum alloy and aluminum. However, the bonding interfaces between aluminum and steel present line-shape. The shear strength and separate strength of the cladding plates were much higher than the standard strength. After being welded, the configuration of the bonding interface has no marked change. The strength of the bonding interface decrease a little. The welding technology had no remarkable effect on the bonding interface of the aluminum alloy-aluminum-steel cladding plates.

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