Application of high velocity impact welding at varied different length scales

Zhou, Yuan; Babu, S. S.; Prothe, Curtis; Blakely, Michael; Kwasegroch, John; LaHa, Mike; Daehn, Glenn S.

doi:10.1016/j.jmatprotec.2010.01.001

Cited by 194 publications

(95 citation statements)

References 14 publications

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“…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]. The air gap is determined by the dimensions of the hump.…”

Section: Mechanism Of Laser Impact Spot Weldingmentioning

confidence: 99%

“…However, unlike these techniques, LIW utilizes laser induced shockwave as the driving force to accelerate the flyer plate. The feasibility of laser impact welding was previously presented by Zhang et al [14] and Wang et al [15]. Zhang et al [14] studied the welding of 50 μm thick aluminum alloy 1100 and low carbon steel block.…”

Section: Introductionmentioning

confidence: 99%

“…In other words, their research indicated that the LIW technique is suitable for joining dissimilar metal foils with small thickness and length values, and does not depend on the electrical conductivity of the flyer plate compared with EXW and MPW. This makes the method promising for applications in the manufacture and assembly of micro-devices, such as medical devices [14].…”

Section: Introductionmentioning

confidence: 99%

“…A new laser impact spot welding (LISW) approach is presented and applied to join thin titanium foil to copper foil with a low laser energy system. The morphology of the weld spots was Two basic geometric configurations of the LIW process have been reported, including angle welding [14,16] and parallel welding [17][18][19] as shown in Figure 1. However, in the angle welding process, the collision angle is constructed by means of an experimental device as shown in Figure 1a, which makes the clamping of the flyer plate and the base plate complicated.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on a Novel Laser Impact Spot Welding

Liu

Gao

Zhang

et al. 2016

Metals

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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.

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Section: Mechanism Of Laser Impact Spot Weldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on a Novel Laser Impact Spot Welding

Liu

Gao

Zhang

et al. 2016

Metals

View full text Add to dashboard Cite

show abstract

“…Current density of the fl yer plate at 2.4 kJ [23] and dissimilar welds of aluminium to copper, magnesium and titanium, copper to bronze or nickel to titanium. When welding dissimilar metals the flyer metal should have high electrical conductivity and the target should have higher yield strength to avoid plastic deformation [8,25]. Fig.…”

Section: Fig 14 Representation Of the Equivalent Circuit [20]mentioning

confidence: 99%