Friction Stir Welding of Dissimilar Butt Joints with Novel Joint Geometry

Jayabalakrishnan, D.; Balasubramanian, M.

doi:10.12693/aphyspola.133.94

Cited by 16 publications

(10 citation statements)

References 21 publications

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“…The conventional welding of dissimilar aluminium alloys causing defects owing to their incompatibilities in chemical and mechanical properties. 6 Therefore, FSW is an alternative process for joining dissimilar metals because of its solid-state joining nature. However, FSW is a mature manufacturing technology that is capable of joining dissimilar aluminium alloys without defects with desired properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on friction stir welding of dissimilar aluminium alloys

Verma

Misra

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In current research work, dissimilar aluminium alloys such as AA5083, AA6081, AA6082, and AA7039 are butt joined by employing friction stir welding (FSW). The present study explores the effect of material positions of aluminium alloys (i.e., advancing side (AS) and retreating side (RS)) on the mechanical and metallurgical properties of FS welded dissimilar aluminium joints. The performance characteristics of the present study are analyzed in terms of mechanical and metallurgical properties. It is concluded that maximum strength is obtained for all the joints in which higher strength aluminium alloy is placed on the AS ((i.e., 386 MPa for AA7039-AA5083, 343 MPa for AA7039-AA6082, 320 MPa for AA5083-AA6082, and 225 MPa for AA6082-Aa6061). Furthermore, two types of macrostructures (i.e., banded and an onion ring) are observed at the nugget zone (NZ) of all the welded joints during metallurgical analysis. Besides this, energy-dispersive X-ray spectroscopy (EDS) analysis at NZ of FSW joints is also carried out to find out the chemical composition at NZ. It is observed that the key element of AS material is high er in weight percent as compared to RS at NZ. Moreover, tensile fractured surface locations are also analyzed to understand the process better. It is witnessed that most joints are fractured at heat affected zone (HAZ) on the lower strength material side.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on friction stir welding of dissimilar aluminium alloys

Verma

Misra

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Studies were also performed with weaving pattern assigned to tool path for better weld quality [11][12][13][14][15][16][17][18] 6.3 Testing of Weld Specimens 1. Tensile test was employed to estimate the tensile strength of the joints and the fracture path.…”

Section: Methodsmentioning

confidence: 99%

A Study on FSW Parameters of Joining Dissimilar Metals - Al and Fe

Yugandha¹,

Balaji²,

Chandu³

et al. 2022

IJTRET

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The materials with similar and dissimilar qualities are joined effectively in their solid-state by Friction Stir Welding (FSW). FSW eliminates the conventional problems and produces crack-free and completely solidified joints. In recent years the commercialization of FSW is focused on metals like Fe and Al-based alloys. However, to commercializesuch a process numerous research studies are required to characterize and establish process windows. FSW process is suitable for joining the different materials having different mechanical and chemical properties and for different material structures. In general, aerospace applications require hybrid metal joins to offer high strengthhigh ductile properties by joining varied metal alloys. FSW is the feasible way to join such metals to get high properties. This review mainly provides the feasibility ofthe FSW technique to join the different materials/alloys.

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“…As far as friction stir welding is concerned, Past experiences reveals difficulties faced during joining of Al to Cu. Linear motion of the tool profile leads to the increase in feed rate value, which causes tunnel defects and voids due to the improper stirring time [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Minimization of Weld Defects in Mig and Tig Welding

Kumar¹,

Nath²,

Kumar³

et al. 2022

IJTRET

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Our project work done for minimizing the welding defects that occur during MIG welding at brake unit in Brakes India Ltd. Welding is the process of joining two similar or dissimilar metals permanently, where MIG welding uses inert gas for shielding and consumable metal for joining two metals. In Brake unit, the welding is performed for joining the web with the rim to form brake shoe. This welding should be very strong so as to resist the distortion due to shear force under dynamic condition. To eradicate frequent occurrences of defects such as blow hole, pin blow hole and start weld. Some of the TQM tools such as cause and effect diagram, Pareto chart, 4 M Methodology and why-why analysis are used to identify the root cause. Hence remedial action taken such as liner cleaning, nozzle cleaning, stopper at the machine bed and tensionner at the feeding unit, helps in reducing the rework rate from 5% to 3%.

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Friction Stir Welding of Dissimilar Butt Joints with Novel Joint Geometry

Cited by 16 publications

References 21 publications

Experimental investigation on friction stir welding of dissimilar aluminium alloys

Experimental investigation on friction stir welding of dissimilar aluminium alloys

A Study on FSW Parameters of Joining Dissimilar Metals - Al and Fe

Minimization of Weld Defects in Mig and Tig Welding

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