Effect of TIG current on microstructural and mechanical properties of 6061-T6 aluminium alloy joints by TIG–CMT hybrid welding

Liang, Ying Chun; Shen, Junqi; Hu, Shengsun; Wang, Haichao; Pang, Jie

doi:10.1016/j.jmatprotec.2017.12.006

Cited by 97 publications

(47 citation statements)

References 24 publications

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“…The PMZ area of 80A specimen is wider than 53A specimen means that 80A specimen has broader weak area. It could be also said that the increasing of TIG current broaden the area of softened zone because of higher heat input causing coarse PMZ grain and then decreasing the hardness in PMZ [11]. The effect of welding sequence on micro-hardness of aluminum alloy joint with tungsten inert gas welding is illustrated in Fig.…”

Section: Micro-hardnessmentioning

confidence: 99%

The effects of welding current and purging gas on mechanical properties and microstructure of tungsten inert gas welded aluminum alloy 5083 H116

Novianto¹,

Iswanto²,

Mudjijana³

2018

MATEC Web Conf.

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Aluminum alloy 5083 H116 has an exceptional performance in extreme environments, moderately high strength, outstanding corrosion resistance in salt water and high impact strength at cryogenic temperature. In the present study, Aluminum alloy AA 5083 H116 plates were joined by tungsten inert gas (TIG) process by single and double sided welding. Welding current used was 53 A and 80 A with the addition of purging gas during welding process. The effects on micro structure and mechanical properties like surface hardness and tensile strength of the welded region were studied. The results have shown that optimum current out of the two weld current used is 53 A. Better microstructures, tensile and hardness were found in the welded joint for the weld current 53 A where the tensile obtained in the softened zone was approximately 87% than that of the base metal (BM). With increasing of TIG current, the width of PMZ increased. In addition, the doubled sided welding sequence also produced broader PMZ area.

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Section: Micro-hardnessmentioning

confidence: 99%

The effects of welding current and purging gas on mechanical properties and microstructure of tungsten inert gas welded aluminum alloy 5083 H116

Novianto¹,

Iswanto²,

Mudjijana³

2018

MATEC Web Conf.

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“…Joining aluminium alloys using fusion welding can lead to the welding defect, such as porosity, solidification cracking, undercut, incomplete fusion, and spatter [7]. Moreover, the reduction of mechanical strength and alteration of microstructure are the problem that needs to be solved.…”

Section: Introductionmentioning

confidence: 99%

“…The other focused on controlling TIG welding using machine vision and neural network [15]. Most of the researchers investigated the mechanical properties and microstructure as a critical aspect for evaluation [7,16]. Several researchers concerned with welding defects such as porosity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Welding Parameter on Mechanical Properties and Macrostructure of AA1100 Using Autogenous Tig Welding

Baskoro¹,

Milyardi

Amat

2020

IJAME

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In this paper, an autogenous tungsten inert gas (TIG) welding was performed to understand the characteristic effect of butt joint weld on AA1100 under various parameters. The effect of TIG current and welding speed was selected to study the mechanical properties, porosity, and macrostructure of the weld metal (WM). Based on experimental results, the top bead width (TBW) will increase directly proportional to the increased of welding current. Furthermore, welding current and welding speed affected the strength drop in the heat-affected zone (HAZ). More heat added will result in a deeper drop in strength. Mechanical properties result showed that the tensile strength reduced by 40 – 45% and the hardness reduction in the WM and HAZ area from the base metal (BM) was 17.3% and 27.7%, respectively. Subsequently, X-Ray radiography images showed that there was no large porosity occur in all welding current. The macrostructure showed that the weld bead typically has the concavity shape or U-shaped geometry from a cross-sectional view.

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“…Chen [17] studied CMT welding of mild steel under different welding conditions and the effect of cold metal transfer on the final weld geometry and weld quality. A combination of laser-CMT, TIG-CMT [22], or the CMT method assisted with a hybrid magnetic field can also be used [23].…”

Section: Introductionmentioning

confidence: 99%

Application of Cold Metal Transfer Welding for High Pressure Die Casting Mold Restoration

Brezinová

Džupon

Vojtko

et al. 2019

Metals

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This paper presents results of the research focused on the possibility of the restoration of the shape parts of molds made of X15CrNiSi20-12 (EN 100 95) heat-resistant austenitic chromium-nickel stainless steel working in high-pressure die casting of aluminum alloys by clad welding. There were tested two welding wires—E Ni 6625 and E 18 8 Mn B 2 2—deposited on X15CrNiSi20-12 (EN 100 95) tool steel using cold metal transfer (CMT) welding in a protective atmosphere of Ar. The resistance of welds was tested against dissolution in molten aluminum alloy ENAC-AlSi9 and the testing procedure was designed. The resistance of welds against dissolution were assessed by exposition of welded clads in an aluminum melt for 120 and 300 min. The EDX semi-quantitative microanalyses of element distribution were performed at the welding–melt interface, and build-ups were also observed on the surface of welded clads.

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Effect of TIG current on microstructural and mechanical properties of 6061-T6 aluminium alloy joints by TIG–CMT hybrid welding

Cited by 97 publications

References 24 publications

The effects of welding current and purging gas on mechanical properties and microstructure of tungsten inert gas welded aluminum alloy 5083 H116

The effects of welding current and purging gas on mechanical properties and microstructure of tungsten inert gas welded aluminum alloy 5083 H116

The Effect of Welding Parameter on Mechanical Properties and Macrostructure of AA1100 Using Autogenous Tig Welding

Application of Cold Metal Transfer Welding for High Pressure Die Casting Mold Restoration

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