Combined effects of MIG and TIG arcs on weld appearance and interface properties in Al/steel double-sided butt welding-brazing

Zheng, Yi; Huang, Jihua; Cheng, Zhi; Zhang, Yufeng; Chen, Shuhai; Yang, Jian

doi:10.1016/j.jmatprotec.2017.07.003

Cited by 46 publications

(14 citation statements)

References 17 publications

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“…At the edge that corresponds to (E) shown in Figure 7a, the formation of another layer was observed between A6061 and the interfacial reaction layer. In another layer that corresponds to the area 6 shown in Figure 7b, a few types of phases are also present. The identification of each phase was difficult because the size of each phase was too small to conduct the EPMA quantitative analysis.…”

Section: Microstructures Of Jointsmentioning

confidence: 99%

“…From the result of the quantitative analysis shown in Table 1, the area 6 was found to include 11.2 at% Zn although the main component is Al. This means that the area 6 is the stirred layer that consists of A6061 and the plating layer of the galvannealed steel. In addition, microcracks were observed in the stirred layer at the edge of the joint, as shown in areas (D) and (E) in Figure 7b.…”

Section: Microstructures Of Jointsmentioning

confidence: 99%

“…Since it is difficult to make the whole body using Al alloys [ 4 ], the realization of a hybrid construction between steel and Al alloys that maintains their respective advantages, has attracted attention. In previous studies, various methods of Al/steel welding have been investigated: ultrasonic spot welding for 6061 Al alloy and AISI 304 stainless steel [ 5 ], MIG-TIG double-side arc welding for 5052 Al alloy and steel [ 6 ], explosive welding for 1230 Al alloy and AISI 321 stainless steel [ 7 ], resistance spot welding (RSW) for 6022 Al alloy and steel [ 8 ] and for 5052 Al alloy and GA590 steel [ 9 ], magnetic pulse welding for 5052 Al alloy and steel [ 10 ], friction melt bonding for 6061 Al alloy and DP980 steel [ 11 ], friction stir welding (FSW) for 5052 Al alloy and DP steel [ 12 ], etc.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Fatigue Behaviors of Dissimilar A6061/Galvannealed Steel Joints Fabricated by Friction Stir Spot Welding

et al. 2021

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The microstructures, tensile shear properties, and tensile shear fatigue properties of dissimilar A6061/Galvannealed steel joints fabricated by friction stir spot welding (FSSW) were investigated. Fe4Al13 phases form as the intermetallic compound (IMC) layer at the joint interface between the A6061 matrix and the galvannealed layer consisting of FeZn7, Fe, and Zn. At the edge of the joint, the stirred layer in which the A6061 matrix and the galvannealed layer are stirred also forms. Moreover, the solidified part of the residual melt discharged from the joint area forms at the outer peripheries of the joint. In this study, FSSW was conducted for two total welding durations: 9 and 10 s. Although the thickness of the remaining A6061 sheet in the welded area decreased with an increase in the welding time, the effects of the total welding time on tensile shear and tensile shear fatigue properties were negligible. A fatigue fracture occurred in the A6061 matrix and at the joint interface at the high cycle fatigue region and the low cycle fatigue region, respectively. In the case of the interfacial fracture, the crack was generated in the solidified part of the residual melt or at the interface between the solidified part and the stirred layer.

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Section: Microstructures Of Jointsmentioning

confidence: 99%

Section: Microstructures Of Jointsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure and Fatigue Behaviors of Dissimilar A6061/Galvannealed Steel Joints Fabricated by Friction Stir Spot Welding

et al. 2021

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“…They investigated the effect of this double-sided arc method on weld appearance, interfacial properties, and joint tensile strength. They found that the formability was most sensitive in TIG current, and sensibility of the forming efficiency was relatively low at MIG current and welding speed [23]. Zhan et al developed the laser-MIG hybrid welding method for investigating the effects of the properties on the connections of the nickel steel alloy joined in different welding parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of welding parameters on microstructure and mechanical properties of AA7075/AA5182 alloys joined by TIG and MIG welding methods

Çetkin

Çelik

Temiz

2019

J Braz. Soc. Mech. Sci. Eng.

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In this study, V and X welding grooves were opened to the forehead positions of the AA5182 and AA7075 aluminum alloy pairs and these alloy pairs were joined with tungsten inert gas (TIG) and metal inert gas (MIG) methods. Three different welding currents were used in joints. Gas flow rates of 12 and 17 l/min at the TIG welding and wire feed rates of 38 and 45 cm/min at MIG welding were selected. The effect of the welding grooves, welding current, gas flow rate and wire feed rate on microstructure and mechanical properties were investigated. Microstructures of welding zones were analyzed by an optical microscope and a scanning electron microscope (SEM). Vickers hardness of these zones was also measured. In addition, tensile and fatigue tests were carried out. Fracture mechanisms of failed specimens were conducted after the tensile tests were examined by using SEM. The highest hardness, tensile and fatigue strengths were obtained from the alloy pairs joined by opening X welding groove with TIG welding method. These values were 89 HV, 262.87 MPa, and 131.5 MPa, respectively. Similarly, the lowest tensile and fatigue strengths were obtained from the alloy pairs joined by opening V welding groove in the TIG welding method. These values were, respectively, 94.48 MPa and 19.1 MPa. However, the minimum hardness value was measured as 58 HV from the alloy pairs joined by opening V welding groove with MIG welding methods. In addition, it was observed on the fracture surfaces that the grain distributions and mechanisms differed depending on the welding methods, welding groove, and welding parameters.

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“…Ye et al demonstrated the effects of welding parameters on the mechanical properties, weld appearance, and interface of dissimilar aluminum/steel double-sided butt welding-brazing. They determined that the optimum parameters are 13 V for the metal inert gas (MIG) voltage, 70 A for tungsten inert gas (TIG) current, 13.5 for the MIG/TIG ratio, and 2 cm/s for welding speed [15]. A high MIG voltage causes the formation of intermetallic compound with a thicker layer, and the layer turns out to be thinner with a higher welding speed.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Effect of Welding Parameters of Austenitic Stainless Steels Using Artificial Neural Network and Taguchi Approaches with ANOVA Analysis

Kurt

Oduncuoğlu

Yilmaz

et al. 2018

Metals

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Abstract:In order to investigate the structure of welds, austenitic stainless steel (SS) studs with a diameter of 6 mm were welded to austenitic SS plates with a thickness of 5 mm using an arc stud welding (ASW) method. The effects of the welding current, welding time, and tip volume of the stud on the microstructure and ultimate tensile strength (UTS) of the welded samples were investigated in detail. The formation of δ-ferrites was detected in the weld zone because of the higher heat generated during the welding process. Higher welding current and time adversely affected the stud and significantly reduced the UTS of the samples. The UTS of the joints was also estimated using artificial neural network (ANN) and Taguchi approaches. The mathematical formulations for these two approaches were given in explicit form. Experimental results showed that the neural network results are more consistent with experimental results than those of the Taguchi method. Overall, it can be concluded that in order to achieve good welding joints and high strength values, ASW parameters should be investigated properly to determine the optimum conditions for each metal.

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Combined effects of MIG and TIG arcs on weld appearance and interface properties in Al/steel double-sided butt welding-brazing

Cited by 46 publications

References 17 publications

Microstructure and Fatigue Behaviors of Dissimilar A6061/Galvannealed Steel Joints Fabricated by Friction Stir Spot Welding

Microstructure and Fatigue Behaviors of Dissimilar A6061/Galvannealed Steel Joints Fabricated by Friction Stir Spot Welding

Effect of welding parameters on microstructure and mechanical properties of AA7075/AA5182 alloys joined by TIG and MIG welding methods

A Comparative Study on the Effect of Welding Parameters of Austenitic Stainless Steels Using Artificial Neural Network and Taguchi Approaches with ANOVA Analysis

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