Influence on the strength and aging resistance of aluminium joints by laser pre-treatment and surface modification

Rechner, Rico; Jansen, Irene; Beyer, Eckhard

doi:10.1016/j.ijadhadh.2010.05.009

Cited by 104 publications

(25 citation statements)

References 16 publications

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“…Additionally, oxidation was noticed to be less after pulsed laser cleaning than CW laser cleaning 16 . Yue et al 17 investigated the removal of the alpha case in Ti alloys while Marimuthu et al 18,19 monitored the TiN removal from WC micro tools and modelled excimer laser cleaning mechanism of film and particle contamination.…”

Section: Introductionmentioning

confidence: 97%

“…They attributed this to the higher absorption at shorter wavelength. Rechner et al 16 studied Nd:YAG laser cleaning of an AA6016 aluminium alloy which was coated with a TiZr oxide layer. They used XPS analysis to confirm the reduction in oxygen and carbon content on the rolled alloy surface and it showed that laser cleaning had removed a significant amount of Fe, C, Si, and O2 from the surface.…”

Section: Introductionmentioning

confidence: 99%

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The effects of short pulse laser surface cleaning on porosity formation and reduction in laser welding of aluminium alloy for automotive component manufacture

Shaer

Mistry

2014

Optics & Laser Technology

126

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. (2014) The effects of short pulse laser surface cleaning on porosity formation and reduction in laser welding of aluminium alloy for automotive component manufacture. Optics and Laser Technology, 64 . pp. 162 171. ISSN 0030 3992 It is advisable to refer to the publisher's version if you intend to cite from the work. This paper reports the effects of short pulsed laser surface cleaning on the porosity formation in laser welding of AC-170PX (AA6014) aluminium sheets (coated with Ti/Zr and lubricated using a dry lubricant AlO70) with two types of joints: fillet edge and flange couch, using an AA4043 filler wire for automotive component assembly. The effect of laser cleaning on porosity reduction during laser welding using a filler wire has not been reported before. In this work, porosity and weld fusion zone geometry were examined prior to and after laser cleaning.The nanosecond pulsed Nd:YAG laser cleaning was found to reduce porosity significantly in the weld fusion zones. For the fillet edge welds, porosity was reduced to less than 0.5% compared with 10-80% without laser cleaning. For flange couch welds, porosity was reduced to 0.23 -0.8% from 0.7 -4.3% without laser cleaning. This has been found to be due to the elimination of contaminations and oxide layers that contribute to the porosity formation. The laser cleaning is based on thermal ablation.2

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

The effects of short pulse laser surface cleaning on porosity formation and reduction in laser welding of aluminium alloy for automotive component manufacture

Shaer

Mistry

2014

Optics & Laser Technology

126

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“…On top of this, PLA improves bond repeatability, as well as waste and cost reduction, and is also prone to automation. Previous literature works have indicated that PLA promotes significant modifications of surface morphology [8,9] and chemistry [10,11], leading to improvement in surface wetting [12,13] and mechanical interlocking [12,14], with consequent increases in bond toughness [15,16] and long term joint stability [18]. It may also outperform traditional joining techniques, such as riveting and fusion welding when dealing with dissimilar materials [19].…”

Section: Introductionmentioning

confidence: 99%

Improving adhesion of copper/epoxy joints by pulsed laser ablation

Hernandez

Alfano

Lubineau

et al. 2016

International Journal of Adhesion and Adhesives

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The purpose of the present work is to survey the effect of pulsed laser ablation on copper substrates (CuZn40) deployed for adhesive bonding. Surface pre-treatment was carried using an Yb-fiber laser beam. Treated surfaces were probed using Scanning Electron Microscopy (SEM) and X-Ray Photoelectron Spectroscopy (XPS). The mechanical performance of CuZn40/epoxy bonded joints was assessed using the T-peel test coupon.In order to resolve the mechanisms of failure and adhesive penetration within surface asperities induced by the laser treatment, fracture surfaces were surveyed using SEM.Finite element simulations, based on the use of the cohesive zone model of fracture, were carried out to evaluate the variation of bond toughness. Results indicated that the laser ablation process effectively modifies surface morphology and chemistry and enables enhanced mechanical interlocking and cohesive failure within the adhesive layer.Remarkable improvements of apparent peel energy and bond toughness were observed with respect to control samples with sanded substrates.

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“…Laser irradiation was proven to modify a titanium surface on a nano-range, resulting in an improved joint strength due to an increased surface area [17][18][19][20][21][22][23]. Chemical activation and contamination removal by the energy input into the substrate material were studied in [24]. Basic investigations on surface pretreated metallic reinforcements for CFRP joints showed that interfacial mechanical interlocking of metal and polymer on a macro and nano scale lead to a significant increase in strain energy release rate (SERR) compared to a co-bonded baseline joint [11].…”

Section: Interfacial Phenomena In Metallic Z-reinforced Cfrp Joints Amentioning

confidence: 99%

Interfacial phenomena in metallic z-reinforced CFRP joints after hygrothermal ageing

Jürgens¹

2017

Zeitschrift Kunststofftechnik

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Influence on the strength and aging resistance of aluminium joints by laser pre-treatment and surface modification

Cited by 104 publications

References 16 publications

The effects of short pulse laser surface cleaning on porosity formation and reduction in laser welding of aluminium alloy for automotive component manufacture

The effects of short pulse laser surface cleaning on porosity formation and reduction in laser welding of aluminium alloy for automotive component manufacture

Improving adhesion of copper/epoxy joints by pulsed laser ablation

Interfacial phenomena in metallic z-reinforced CFRP joints after hygrothermal ageing

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