Investigation of Collision Surfaces and Weld Interface in Magnetic Pulse Welding of Dissimilar Al/Cu Sheets

Sarvari, Morteza; Abdollah-zadeh, A.; Naffakh-Moosavy, Homam; Rahimi, Asgar Bradaran; parsaeyan, Hamed

doi:10.1016/j.jmapro.2019.07.012

Cited by 50 publications

(7 citation statements)

References 29 publications

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“…Similar features were also reported in [16]. Sarvari et al [17] observed both cross-section and collision surfaces, with a well-bonded interface featured by a wavy diffusion layer in the outer annular welding zone, which is in good agreement with the present observations.…”

Section: Dimple Feature In Layer IIsupporting

confidence: 93%

Hierarchical Morphology and Formation Mechanism of Collision Surface of Al/Steel Dissimilar Lap Joints via Electromagnetic Pulse Welding

Wang

Chen

Yan

et al. 2021

Metals

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The aim of this study was to characterize detailed microstructural changes and bonding characteristics and identify the formation mechanism of collision surface of Al6061–Q355 steel dissimilar welded joints via electromagnetic pulse welding (EMPW). The collision surface was observed to consist of five zones from the center to the outside. The central non-weld zone exhibited a concave and convex morphology. The welding-affected zone mainly included melting features and porous structures, representing a porous joining. The secondary weld zone presented an obvious mechanical joining characterized by shear plateaus with stripes. The primary weld zone characterized by dimples with cavity features suggested the formation of diffusion or metallurgical bonding. The impact-affected zone denoted an invalid interfacial bonding due to discontinuous spot impact. During EMPW, the impact energy and pressure affected the changes of normal velocity and tangential velocity, and in turn, influenced the interfacial deformation behavior and bonding characteristics, including the formation of micropores which continued to grow into homogeneous or uneven porous structures via cavitation, surface tension, and depressurization, along with the effect of trapped air.

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Section: Dimple Feature In Layer IIsupporting

confidence: 93%

Hierarchical Morphology and Formation Mechanism of Collision Surface of Al/Steel Dissimilar Lap Joints via Electromagnetic Pulse Welding

Wang

Chen

Yan

et al. 2021

Metals

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“…Some efforts have been made to extract the desired values of electromagnetic welding parameters such as standoff distance, voltage and geometry of coil in order to attain a high quality weld [1,4,5]. Recently, the effect of electromagnetic welding parameters such as surface grinding, standoff distance and back-plate support on the mechanical properties of different combinations of aluminum, copper and iron sheets have been investigated [6][7][8][9][10]. Despite the admirable attempts of earlier researchers in studying the various parameters of electromagnetic welding process, investigation of the sheet thickness was not seen in the previous researches.…”

Section: Introductionmentioning

confidence: 99%

Investigation of sheet thickness in the electromagnetic welding of aluminum‐stainless steel

Ayaz

Khandaei

Vahidshad

2022

Materialwissenschaft Werkst

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The goal of present research is to investigate the effect of thickness of aluminum, stainless steel and driver sheets on the ultimate tensile strength, weld width and hardness of aluminum‐stainless steel joint in the electromagnetic welding. First, the finite element analysis was applied to predict the joint formation between aluminum and stainless steel sheets by using the weldability window. Then, the experiments were conducted using the response surface methodology and desirability function to attain the desirable values of sheet thickness. Eventually, the microstructure of weld interface was observed by optical and scanning electron microscopy to evaluate the quality of welds. It was observed that the values of ultimate tensile strength, weld width and hardness can be simultaneously improved by selecting the thickness of aluminum, stainless steel and driver at 0.78 mm, 0.37 mm and 0.96 mm respectively. The microstructure analysis exhibited that the detrimental effects of intermetallic layers on the weld strength can be limited by reducing the thickness of intermetallic to 4 μm.

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“…2 The MPW can convert electrical energy into the kinetic energy of the metal workpiece, enabling the two materials collide at a high speed to achieve metallurgical bond. 3 The collision velocity usually varies from 200 to 500 m/s, and the welding process is very short (only tens of microseconds). 4 With the exception of good controllability and repeatability, MPW technology is also suitable for welding materials with poor weldability.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and optimization on field shaper structure parameters in magnetic pulse welding

Chen

Yang

Peng

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Magnetic pulse welding is a high-speed welding technology, which is suitable for welding light metal materials. In the magnetic pulse welding system, the field shaper can increase the service life of the coil and contribute to concentrating the magnetic field in the welding area. Therefore, optimizing the structure of the field shaper can effectively improve the efficiency of the system. This paper analyzed the influence of cross-sectional shape and inner angle of the field shaper on the ability of concentrating magnetic field via COMSOL software. The structural strength of various field shapers was also analyzed in ABAQUS. Simulation results show that the inner edge of the field shaper directly affects the deformation and welding effect of the tube. So, a new shape of field shaper was proposed and the experimental results prove that the new field shaper has better performance than the conventional field shaper.

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Investigation of Collision Surfaces and Weld Interface in Magnetic Pulse Welding of Dissimilar Al/Cu Sheets

Cited by 50 publications

References 29 publications

Hierarchical Morphology and Formation Mechanism of Collision Surface of Al/Steel Dissimilar Lap Joints via Electromagnetic Pulse Welding

Hierarchical Morphology and Formation Mechanism of Collision Surface of Al/Steel Dissimilar Lap Joints via Electromagnetic Pulse Welding

Investigation of sheet thickness in the electromagnetic welding of aluminum‐stainless steel

Experimental investigation and optimization on field shaper structure parameters in magnetic pulse welding

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