Laser-Mig Hybrid Welding Of Aluminium To Steel — Effect Of Process Parameters On Joint Properties

Thomy, Claus; Vollertsen, Frank

doi:10.1007/bf03321356

Cited by 47 publications

(30 citation statements)

References 3 publications

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“…A thicker layer of this will result in more brittle joints and reduce the strength and hardness. Preheating or the existence of a secondary heat source other than the MIG torch such as a laser or TIG torch can be a means to suppress this IMC formation (Budkin, 2011;Bang et al, 2013;Powell et al, 2011;Thomy & Vollertsen, 2012). On the other hand, Figure 6 (c)-(d) for Group 2 shows a different microstructure.…”

Section: Investigation Of Aluminum-stainless Steel Dissimilar Weld Qumentioning

confidence: 99%

Investigation of Aluminum-Stainless Steel Dissimilar Weld Quality using Different Filler Metals

Shah¹,

Akhtar²,

Ishak³

2013

Int J Automot Mech Eng

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Aluminum-stainless steel dissimilar welding processes yield unwanted disadvantages in the weld joint due to the large difference between the aluminum-stainless steel sheets' melting points and the nearly zero solid solubility between these two metals. Aluminum AA6061 and stainless steel SUS304 were lap-welded by using Metal Inert Gas (MIG) welding with aluminum filler ER5356 (Group 1) and stainless steel filler ER308LSi (Group 2). The effects of the welding voltage and type of filler metals used on the weld joints were studied. The welding voltage had a significant effect on the welding process, as higher voltage resulted in poorer appearance of the weld joint and led to defects for both groups, such as porosity and incomplete fusion. The microstructure for Group 1 joints shows enrichment of Si particles, which benefited the joint properties as it increased the strength of the metal. The stainless steel substrates that spread into the aluminum side are much greater in volume for Group 1 than for Group 2 joints. Meanwhile, the microstructure of Group 2 joints (using ER308LSi filler) consists of chromium carbide precipitation which yields a high hardness value, but a brittle structure. The hardness values of the welded seams in Group 1 and Group 2 range from 60 to 100 HV and 160 to 230 HV, respectively. The fracture in the tensile test yielded the highest tensile strength of 104.4 MPa with aluminum fillers. The tensile strength of Group 1 joints ranging from 47.8 to 104.4 MPa was collectively higher than Group 2 joints, between 20.24 to 61.76 MPa. Based on the investigation throughout this study, it can be concluded that the welding voltage of 18 V and aluminum filler ER5356 is the optimum filler in joining the dissimilar metals aluminum AA6061 and stainless steel SUS 304.

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Section: Investigation Of Aluminum-stainless Steel Dissimilar Weld Qumentioning

confidence: 99%

Investigation of Aluminum-Stainless Steel Dissimilar Weld Quality using Different Filler Metals

Shah¹,

Akhtar²,

Ishak³

2013

Int J Automot Mech Eng

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“…It was found that the morphology of interface layer changed from ser-rated shape to tongue-like shape with the increase of weld heat input as well as the thickness of the interface layer increased. In addition, there are a lot of researches on cold pressure welding (CMT), 13,14) laser welding, [15][16][17] resistance spot welding (RSW) 18,19) and friction welding (FW) 20,21) to investigate the microstructure of interface layer and improve the mechanical properties of weld joints.…”

Section: Microstructures and Mechanical Properties Of Plasma Arc Weldmentioning

confidence: 99%

Microstructures and Mechanical Properties of Plasma Arc Welded Joints of Ultra-high Strength Steel and Aluminum Alloy Using Al–Si and Al–Cu Fillers

Geng

Sun

et al. 2018

ISIJ International

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“…Thomy and Vollertsen (2012) obtained joints with the strength exceeding 180 MPa at an elevated speed of 6 m/min on laser-CMT hybrid brazing-fusion welding of Al/steel. The IMCs layer formed during hybrid brazing-fusion process was further studied in depth by Mei et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Large spot laser assisted GMA brazing–fusion welding of aluminum alloy to galvanized steel

Qin

Zhao

et al. 2014

Journal of Materials Processing Technology

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Laser-Mig Hybrid Welding Of Aluminium To Steel — Effect Of Process Parameters On Joint Properties

Cited by 47 publications

References 3 publications

Investigation of Aluminum-Stainless Steel Dissimilar Weld Quality using Different Filler Metals

Investigation of Aluminum-Stainless Steel Dissimilar Weld Quality using Different Filler Metals

Microstructures and Mechanical Properties of Plasma Arc Welded Joints of Ultra-high Strength Steel and Aluminum Alloy Using Al–Si and Al–Cu Fillers

Large spot laser assisted GMA brazing–fusion welding of aluminum alloy to galvanized steel

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