Wetting behavior of eutectic Al–Si droplets on zinc coated steel substrates

Gatzen, Marius; Radel, Tim; Thomy, Claus; Vollertsen, Frank

doi:10.1016/j.jmatprotec.2013.08.005

Cited by 46 publications

(21 citation statements)

References 18 publications

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“…It is worthwhile to note that no obvious gaps or cracks were found at the brazing interface between weld metal and the solid steel from Fig. 4(a), which may confirm the fact that the Zn element enhances the wetting and spreading of molten aluminum alloy and filler metal on the steel face [15,16].…”

Section: Microstructure Of Butt Joints Of Aluminum and Steelmentioning

confidence: 52%

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Qi²,

et al. 2015

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Section: Microstructure Of Butt Joints Of Aluminum and Steelmentioning

confidence: 52%

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Qi²,

et al. 2015

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“…This coating is mandatory for the CMT process, because it ensures sufficient wettability of the steel sheet for liquid aluminum. [55,74] However, evaporation of zinc may destabilize the welding process. [75] Remarkable effects of scandium (Sc) and zirconium (Zr) on reducing the IM layer thickness were not observed.…”

Section: Influence Of the Filler Alloy Compositionmentioning

confidence: 99%

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Silvayeh

Vallant

Sommitsch

et al. 2017

Metall Mater Trans A

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Hybrid components made of aluminum alloys and high-strength steels are typically used in automotive lightweight applications. Dissimilar joining of these materials is quite challenging; however, it is mandatory in order to produce multimaterial car body structures. Since especially welding of tailored blanks is of utmost interest, single-sided Cold Metal Transfer butt welding of thin sheets of aluminum alloy EN AW 6014 T4 and galvanized dual-phase steel HCT 450 X + ZE 75/75 was experimentally investigated in this study. The influence of different filler alloy compositions and welding process parameters on the thickness of the intermetallic layer, which forms between the weld seam and the steel sheet, was studied. The microstructures of the weld seam and of the intermetallic layer were characterized using conventional optical light microscopy and scanning electron microscopy. The results reveal that increasing the heat input and decreasing the cooling intensity tend to increase the layer thickness. The silicon content of the filler alloy has the strongest influence on the thickness of the intermetallic layer, whereas the magnesium and scandium contents of the filler alloy influence the cracking tendency. The layer thickness is not uniform and shows spatial variations along the bonding interface. The thinnest intermetallic layer (mean thickness < 4 lm) is obtained using the silicon-rich filler Al-3Si-1Mn, but the layer is more than twice as thick when different low-silicon fillers are used.

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“…To generate liquid CuSn12 droplets on Al 2 O 3 substrates, a process chamber with inert gas atmosphere as described in [24] was used, to resemble similar conditions as in the described droplet joining process. During the wetting experiment, a wire feeder imposes the CuSn12 wire into the process chamber, enabling the irradiation of the wire tip via a window with a laser pulse of 2 kW laser power and 2 s pulse duration.…”

Section: Wetting Behavior Of Al 2 O 3 Capillary and Molten Cusn12 Brazementioning

confidence: 99%

Experimental and numerical investigations regarding laser drop on demand jetting of Cu alloys

Stein

Dobler

Radel

et al. 2017

Prod. Eng. Res. Devel.

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model was set up, indicating heating and cooling rates of 22,100 K/s. Further, the impact of the capillary geometry on the velocity fields of a passing medium was evaluated. By changing the capillary geometry, the gas flow velocity could be reduced by about 10% according to the simulation model, which resulted in a reduction of droplet height deviation of 7.5% and a reduction of the droplet diameter deviation of 32.2% in the experiment.

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Wetting behavior of eutectic Al–Si droplets on zinc coated steel substrates

Cited by 46 publications

References 18 publications

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Investigation of laser welding on butt joints of Al/steel dissimilar materials

Influence of Filler Alloy Composition and Process Parameters on the Intermetallic Layer Thickness in Single-Sided Cold Metal Transfer Welding of Aluminum-Steel Blanks

Experimental and numerical investigations regarding laser drop on demand jetting of Cu alloys

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