Depiction of interfacial characteristic changes during impact welding using computational methods: Comparison between Arbitrary Lagrangian - Eulerian and Eulerian simulations

Sapanathan, Thaneshan; Raoelison, Rija Nirina; Padayodi, Essolé; Buiron, Nicolas; Rachik, Mohamed

doi:10.1016/j.matdes.2016.04.025

Cited by 48 publications

(18 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A jet is expected to be generated, which will remove the oxidized surface layer and produce two fresh surfaces by the oblique impact. Then solid state bonding can be obtained under the great impact pressure and plastic shear deformation in the interface [22][23][24][25]. The whole process is completed in microseconds [14].…”

Section: Mechanism Of Laser Impact Spot Weldingmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on a Novel Laser Impact Spot Welding

Liu

Gao

Zhang

et al. 2016

Metals

View full text Add to dashboard Cite

Abstract:In this paper a novel laser impact spot welding (LISW) method is described, in which a hump was formed on the flyer plate on the intended welding spot location by local pre-forming. When the flyer and base plates were placed together to perform welding, the two plates kept in contact over their entire surfaces except at the hump, where a local air gap was enough to guarantee the impact velocity and collision angle to achieve spot welding using laser pulse energy. The presented approach was implemented to join thin titanium foils to copper foils under low laser energy system. Joints with regular shapes were obtained. The microstructure in the weld interface was studied with scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). It was found that the jetting occurred at the central region of the weld spots due to oblique impact. Wave features were observed in the weld interfaces. The impact energy was found to have significant influence on the wave's characteristics. Moreover, SEM images and EDS analysis did not show apparent element diffusion across the weld interface. Besides, the lap shearing test was used to characterize the mechanical properties of the spot welded joints.

show abstract

Section: Mechanism Of Laser Impact Spot Weldingmentioning

confidence: 99%

“…As a result, bonding was obtained [22]. Moreover, most of the researchers believed that the jet must be present in the welding process in order to achieve successful welding [23][24][25]. So, it is suggested that jetting formation was one of the conditions for the occurrence of LISW of Ti and Cu.…”

Section: Microstructurementioning

confidence: 99%

Investigation on a Novel Laser Impact Spot Welding

Liu

Gao

Zhang

et al. 2016

Metals

View full text Add to dashboard Cite

show abstract

“…During the shock welding course, the jetting flowed outward and eventually stopped in the gap between the wire and the Al sheet. Most researchers found that in order to achieve successful welding, the jetting must be generated in the welding process [ 20 , 21 , 22 ]. Therefore, the jetting is essential for the shock welding between wire and metal sheet.…”

Section: Resultsmentioning

confidence: 99%

Laser Indirect Shock Welding of Fine Wire to Metal Sheet

et al. 2017

View full text Add to dashboard Cite

Abstract:The purpose of this paper is to present an advanced method for welding fine wire to metal sheet, namely laser indirect shock welding (LISW). This process uses silica gel as driver sheet to accelerate the metal sheet toward the wire to obtain metallurgical bonding. A series of experiments were implemented to validate the welding ability of Al sheet/Cu wire and Al sheet/Ag wire. It was found that the use of a driver sheet can maintain high surface quality of the metal sheet. With the increase of laser pulse energy, the bonding area of the sheet/wire increased and the welding interfaces were nearly flat. Energy dispersive spectroscopy (EDS) results show that the intermetallic phases were absent and a short element diffusion layer which would limit the formation of the intermetallic phases emerging at the welding interface. A tensile shear test was used to measure the mechanical strength of the welding joints. The influence of laser pulse energy on the tensile failure modes was investigated, and two failure modes, including interfacial failure and failure through the wire, were observed. The nanoindentation test results indicate that as the distance to the welding interface decreased, the microhardness increased due to the plastic deformation becoming more violent.

show abstract

“…Heating is very likely significant because the peak temperature is expected to reach 1473 K (1200°C) in MPW of AA6061-T6 according to thermomechanical simulations. [135] This temperature increase, combined with the high rate of deformation, leads to material softening (and even sometimes melting), which promotes the formation of a wavy joint interface. [103,106,116] In the present case, the observation of wavy interfaces is consistent with the studies by Watanabe [136] and Aizawa [105] but differs from some previous results that report a planar interface at MPW Al-steel joints.…”

Section: A Interface Wavinessmentioning

confidence: 99%

“…The dislocation density is, for instance, estimated at 10 11 dislocations per cm 2 after explosion welding. [144] In the second assumption, the heating effect due to a high strain rate for a short time [135] may induce local melting followed by rapid solidification at the interface. [106,110,111,113] In this case, diffusion is exacerbated during the process, which leads to the fast formation of IMCs.…”

Section: Joints Without Znmentioning

confidence: 99%

Effect of Steel Galvanization on the Microstructure and Mechanical Performances of Planar Magnetic Pulse Welds of Aluminum and Steel

Avettand-Fènoël

Khalil

Taillard

et al. 2018

Metall Mater Trans A

View full text Add to dashboard Cite

For the first time, planar joints between pure aluminum and galvanized or uncoated DP450 steel joints have been developed via magnetic pulse welding. Both present a wavy interface. The microstructure of the interfacial zone differs according to the joint. With uncoated steel, the interface is composed of discrete 2.5-lm-thick FeAl 3 intermetallic compounds and Fe penetration lamellae, whereas the interface of the pure Al-galvanized steel joint is bilayered and composed of a 10-nm-thick (Al) Zn solid solution and a few micrometers thick aggregate of Al-and Zn-based grains, arranged from the Al side to the Zn coating. Even if the nature of the interfacial zone differs with or without the steel coating, both welds present rather similar maximum tensile forces and ductility in shear lap testing.

show abstract

Depiction of interfacial characteristic changes during impact welding using computational methods: Comparison between Arbitrary Lagrangian - Eulerian and Eulerian simulations

Cited by 48 publications

References 30 publications

Investigation on a Novel Laser Impact Spot Welding

Investigation on a Novel Laser Impact Spot Welding

Laser Indirect Shock Welding of Fine Wire to Metal Sheet

Effect of Steel Galvanization on the Microstructure and Mechanical Performances of Planar Magnetic Pulse Welds of Aluminum and Steel

Contact Info

Product

Resources

About