Effect of graphene on corrosion resistance of micro-arc oxidation coatings on 6061/7075 dissimilar laser-MIG hybrid welded joint

Liu, Jiaan; Pan, Wenchi; Liu, Yan; Wang, Yi

doi:10.1088/2053-1591/ab0abe

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…The samples were immersed in a 3.5% NaCl solution for 60 days. Moreover, in [ 26 ], it was also shown that in the case of hybrid laser-MIG welded joints of EN AW-6061/EN AW-7075 alloys, HAZ is the most susceptible to corrosion.…”

Section: Resultsmentioning

confidence: 99%

Study of Corrosion, Structural, and Mechanical Properties of EN AW-6082 and EN AW-7075 Welded Joints

et al. 2021

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The purpose of the work was to test the welded joints of aluminum alloys EN AW-7075 and EN AW-6082, which are used to join individual structural elements of car bodies, e.g., B-pillar with the body. The joints were made using the low-energy cold metal transfer (CMT) arc welding method. The results of the structure investigations of lap and butt joints, as well as tests of mechanical properties are presented. The influence of linear energy and the way of arranging materials in lap joints on the possibility of hot cracks occurrence has been demonstrated. The shear strength of lap joints was equal to 150 MPa, while the tensile strength of butt joints was equal to 375 MPa. The highest hardness reduction was observed in the heat affected zone (HAZ) from the EN AW-7075 alloy side in the range of 98 to 138 HV 0.05. In addition, a significant reduction of the corrosion resistance in the transition zone between HAZ and the base material (EN AW-7075 alloy) in the medium salinity environment, corresponding to the sea conditions according to ASTM G85 was indicated.

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Section: Resultsmentioning

confidence: 99%

Study of Corrosion, Structural, and Mechanical Properties of EN AW-6082 and EN AW-7075 Welded Joints

et al. 2021

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“…The basis run is often the speed dominant procedure in transmission pipeline development, and therefore, the fastening is commonly performed utilizing AN inner fastening machine or an enclosed line-up clip with copper backing. All framework are displayed to offer satisfactory fastening creation rates to most pipelining applications [7,8]. Be that because it might, on account of very little activity pipe and movement creases in larger dimension lines the employment of within fastening frameworks is unimaginable and single sided.…”

Section: Improvements In Gmaw Root Pass Techniquesmentioning

confidence: 99%

Resistance Welding, Introduction and Recent Developments

Tripathy¹,

Tjprc²

2019

IJMPERD

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Aim of this paper is to discuss about the in-opposition welding and the ongoing advancement in same zone. Procedure may include current as much as few kilo ampere and voltage of 2 to 12 volts. Weight, current and voltage necessity differ from plate to plate as their thickness and material changes in an opposition welding process there are two anodes made of copper or tungsten or any of their combination. These materials are picked on the grounds that they have high electrical conductivity and they don't twist much when there temperature is raised. Spot welding is a standout amongst the most ordinarily utilized opposition welding in view of prerequisite of welding slender sheets with one another in huge number of modern application for instance downpour mentor fabricating, body of a vehicle and some more. there are a lot more opposition welding forms like crease welding, projection welding, streak welding, upset butt welding, high recurrence obstruction welding, high recurrence enlistment welding. AC is supply is most acclaim out of these three on account of its effortlessness. DC supply can utilized where substantial measure of current is required. in this procedure there are two cathodes one of which is stationary and the other is mobile. Mainly this operation is used in manufacturing industry for welding of various materials for better performance.

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Effects of Sc on laser hot-wire welding performance of 7075 aluminum alloy

Wei

Xiao

et al. 2020

Mater. Res. Express

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In order to clarify the effects of Sc modification on laser hot-wire welding performance of 7075 high strength aluminum alloys, the changing rules of weld formation, microstructure, element loss, mechanical performances and pores of weld joints were investigated during laser fusion welding, laser hot-wire welding and Sc-modified laser hot-wire welding. Comparing with laser fusion welding, the filler wire in laser hot-wire welding brought welding material and hot wire energy, resulting in better weld formation and sufficient fused weld joint. In laser hot-wire welding, tensile strength and elongation of weld joint were enhanced, element loss of weld joint was dramatically reduced and weld pore was reduced slightly. However, grains in fusion zone were relatively coarse, which caused lower microhardness in laser hot-wire welding. In Sc modified laser hot-wire welding, Sc modification led to smooth and continuous weld joint. During solidification of weld joints, Sc could combine with base metal to form Sc-containing alloy phase, which could lead to the formation of refined and equiaxed grains, thereby enhancing the yield strength of microstructure and increasing the microhardness, tensile strength and elongation of weld joint. In addition, Sc modification could increase the fluidity of molten pool, which thus promoted the escape of bubbles from the molten pool and hindered the formation of weld pores.

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Effect of graphene on corrosion resistance of micro-arc oxidation coatings on 6061/7075 dissimilar laser-MIG hybrid welded joint

Cited by 3 publications

References 32 publications

Study of Corrosion, Structural, and Mechanical Properties of EN AW-6082 and EN AW-7075 Welded Joints

Study of Corrosion, Structural, and Mechanical Properties of EN AW-6082 and EN AW-7075 Welded Joints

Resistance Welding, Introduction and Recent Developments

Effects of Sc on laser hot-wire welding performance of 7075 aluminum alloy

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