Influence of alloy elements on microstructure and mechanical property of aluminum–steel lap joint made by gas metal arc welding

Su, Yongchao; Hua, Xueming; Wu, Yixiong

doi:10.1016/j.jmatprotec.2013.11.022

Cited by 68 publications

(40 citation statements)

References 18 publications

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“…In particular, Al-5% or 12% Si or Zn-15% Al are commonly used filler alloys. Dong et al [9], Su et al [10] and Milani et al One further difficulty is the low wettability of molten aluminum on solid steel. This, luckily, can be improved by applying a thin zinc coating to the steel surface.…”

Section: Introductionmentioning

confidence: 99%

Review of Aluminum-To-Steel Welding Technologies for Car-Body Applications

Gullino

Matteis

D’Aiuto

2019

Metals

116

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Hybrid car bodies fabricated by joining parts made with steel and aluminum alloys are becoming increasingly common. This provides an affordable mean to decrease the car weight by using lighter or more advanced materials only where they can achieve the maximum benefit. This development is driven mainly by recent regulations on carbon dioxide emissions, and hinges on the deployment of effective joining technologies. In most cases, such technologies were not previously used in the car sector, and must be adapted to its requirements. Several dissimilar welding technologies, based on either fusion welding or solid-state welding, are reviewed here, focusing on dissimilar joining among steels and wrought aluminum alloys. These technologies are either presently being introduced in the car industry, or are used in other sectors and could be applied in the car industry in the near future.

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Section: Introductionmentioning

confidence: 99%

Review of Aluminum-To-Steel Welding Technologies for Car-Body Applications

Gullino

Matteis

D’Aiuto

2019

Metals

116

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“…The welding energy, controlled by the process speed and the heat input, is a critical process parameter http://dx.doi.org/10.1016/j.jmapro.2016. 12 governing the formation of the intermetallic. In order to achieve joints with sounding properties, process parameters have to be optimised.…”

Section: The Joining Of Steel To Aluminiummentioning

confidence: 99%

“…Weld-brazing of steel to aluminium was achieved with the Cold Metal Transfer (CMT) process and Al-Si filler wire by Cao et al [10], Lin et al [9] and Zhang et al [11] at a brazing speed reaching 1.4 m/min. They demonstrated that joints can be achieved in lap configuration with mechanical strengths between 174 and 200 MPa and limited intermetallic layer around 4 m. Su et al [12] and Yagati et al [13] studied the Gas Metal Arc Welding (GMAW) process in lap configuration with AlSi 5 filler wire at a speed of 0.5 m/min and [3.5, 4] m/min respectively. They succeeded to reach a mechanical strength around 200 MPa with a maximum thickness of the intermetallic layer of 4 m at a brazing speed of 1.4 m/min.…”

Section: The Joining Of Steel To Aluminiummentioning

confidence: 99%

Industrial fluxless laser weld-brazing process of steel to aluminium at high brazing speed

Filliard

Mansori

Tirado

et al. 2017

Journal of Manufacturing Processes

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AA6016-T4 aluminium and DX56D + Z140M steel sheets were joined by fluxless laser weld-brazing process in industrial conditions and at high brazing speed reaching 6 m/min with ER4043 AlSi 5 filler wire. The configuration studied corresponds to an automotive roof/body-side bond application. For each configuration the energy and feeding rate are computed. The resulted intermetallic layer at the Fe-Al interface and its morphology are investigated through hardness, optical microscopy, EDS and EBSD analysis. The maximum thickness of the intermetallic layer is measured for each configuration. The associated mechanical strength is quantified to evaluate the potential of different configurations for an high brazing speed industrial application. Both, thin and thick intermetallic layer presents specific crystallographic orientation. Thin layer presents a small grains microstructures in the opposite of thick layer with bigger grains. For some samples, specific orientations of the intermetallic needles are observed. The configuration with energy of 600 J/cm and a feeding rate of 1.125 (unit-less) stands out as the most significant with an averaged mechanical strength of 101% of the mechanical properties of the filler wire and intermetallic layer with thickness bellow 2 m. Mechanical fractures are no longer observed at the Fe-Al interface but occurred in the welded area, between the seam and the aluminium sheet.

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“…The size of the sample is 25mm × 60mm × 1.5mm. The procedure of the test is as follows 10,11,[12][13] : low carbon steel →washing→Alkaline degreasing→Wire brush→ ethanol →Fluxing agent treatment →evaporation → hot-dip coating at 690 ± 5 ℃. In order to avoid the plating leakage and keep the thickness of the identical surface coating, the sample was immersed into the Liquid aluminum in a certain speed and vibrated slightly to remove the bubbles on the surface of the sample 14) .…”

Section: Hot-dipped Zl102 Aluminum Alloy Coating On the Surfaces Of Lmentioning

confidence: 99%

“…The equipment and procedures of the tensile test were proceeded according to the standard GB228-87 of "the method of the metal tensile test". The specimens tensile were proceeded on the hydraulic universal material testing machine in order to measure the tensile, strength and elongation of weld metal 24) . The results were in Table 6.…”

Section: Tension Test and Analysismentioning

confidence: 99%

Flame Braze between Aluminum Alloy 5A06 and Low Carbon Steel Q235

Liu

Hao

et al. 2017

Journal of Welding and Joining

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By means of the flame braze, the welding problems on Aluminum alloy(5A06)and low carbon steel Q235) were mainly researched in this paper. The welding technology adopted in this paper is that a hot-dipped Aluminum coating of ZL102 Aluminum alloy was firstly performed on the surfaces of low carbon steel, then the layer of hot-dipped aluminum and aluminum alloy were welded by the shape of the lap joint. Through the analysis of the microstructure and tensile property of welded joint after the experiment, the experimental results expressed that good welded joint can be attained by application of flame brazing. Fracture location of the joint specimens appears in the coating layer by means of tensile test. The results show that the bond strength of the coating layer was less than that of the brazing seams..

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Influence of alloy elements on microstructure and mechanical property of aluminum–steel lap joint made by gas metal arc welding

Cited by 68 publications

References 18 publications

Review of Aluminum-To-Steel Welding Technologies for Car-Body Applications

Review of Aluminum-To-Steel Welding Technologies for Car-Body Applications

Industrial fluxless laser weld-brazing process of steel to aluminium at high brazing speed

Flame Braze between Aluminum Alloy 5A06 and Low Carbon Steel Q235

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