A review of various improvement strategies for joint quality of AA 6061-T6 friction stir weldments

Ogunsemi, B.T.; Abioye, T.E.; Ogedengbe, T.I.; Hussain, Zuhailawati

doi:10.1016/j.jmrt.2021.01.070

Cited by 51 publications

(14 citation statements)

References 106 publications

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“…This type of jointishighly preferred to join dissimilar materials aiming at structures with high strength. Thus, FSW is predominately used in the joining of Al, Cu, Ti alloys, mild steel, stainless steel, and magnesium alloys [3]. More recently, it was successfully used in the joining of polymers.…”

Section: Principle Of Operationmentioning

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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Section: Principle Of Operationmentioning

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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“…Post-welding processes can be performed on welded samples to improve the loss of strength in the welding of Al alloys by recovering precipitation-hardening particles and relieving residual stress or the average grain size reduction in the weld zone [ 21 ]. Hamed [ 22 ] carried out the natural aging process on the dissimilar FSWed Al7075-Al5083.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Property Improvement in Dissimilar Friction Stir Welded Al5083/Al6061 Joints: Effects of Post-Weld Heat Treatment and Abnormal Grain Growth

et al. 2021

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The 5083 and 6061(T6) aluminum (Al) alloys are widely used in transportation industries and the development of structural designs because of their high toughness and high corrosion resistance. Friction stir welding (FSW) was performed to produce the dissimilar welded joint of Al5083-Al 6061(T6) under different welding parameters. However, softening behavior occurred in the friction stir welded (FSWed) samples because of grain coarsening or the dissolution of precipitation-hardening phases in the welding zone. Consequently, this research intended to investigate the effect of the post-weld heat treatment (PWHT) method on the mechanical property improvement of the dissimilar FSWed Al5083-Al6061(T6) and governing abnormal grain growth (AGG) through different welding parameters. The results showed PWHT enhanced the mechanical properties of dissimilar joints of Al5083-Al6061(T6). AGG was obtained in the microstructure of PWHTed joints, but appropriate PWHT could recover the dissolved precipitation-hardening particle in the heat-affected zone of the as-welded joint. Further, the tensile strength of the dissimilar joint increased from 181 MPa in the as-welded joint to 270 MPa in the PWHTed joint, showing 93% welding efficacy.

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“…The joint created by FSW is almost perfectly smooth and strong as the original workpiece. FSW has also successfully joined large structures such as high-speed trains and space launch vehicles (Ogunsemi et al , 2021). It is unlike traditional welding because the joining occurs below the melting point of materials.…”

Section: Introductionmentioning

confidence: 99%

“…From the published literature, it is found that extensive research has been conducted to optimize the process parameters. Also, the proper choice and combination of the FSW parameters have a significant impact on the quality of the joint generated (Ogunsemi et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Multi-response optimization of process parameters in friction stir welded aluminum 6061-T6 alloy using Taguchi grey relational analysis

Jain

Kumar

2021

WJE

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Purpose Friction stir welding (FSW) is considered an environmentally sound process compared to traditional fusion welding processes. It is a complex process in which various parameters influence weld strength. Therefore, it is essential to identify the best parameter settings for achieving the desired weld quality. This paper aims to investigate the multi-response optimization of process parameters of the FSWed 6061-T6 aluminum (Al) alloy. Design/methodology/approach The input process parameters related to FSW have been sorted out from a detailed literature survey. The properties of weldments such as yield strength, ultimate tensile strength, percentage elongation and microhardness have been used to evaluate weld quality. The process parameters have been optimized using the Taguchi-based grey relational analysis (GRA) methodology. Taguchi L16 orthogonal array has been considered to design the experiments. The effect of input parameters on output responses was also determined by the analysis of variance (ANOVA) method. Finally, to corroborate the results, a confirmatory experiment was carried out using the optimized parameters from the study. Findings The ANOVA result indicates that the tool rotation speed was the most significant parameter followed by tool pin profile and welding speed. From the confirmation test, it was observed that the optimum FSW process parameters predicted by the Taguchi method improved the grey relational grade by 13.52%. The experimental result also revealed that the Taguchi-based GRA method is feasible in finding solutions to multi-response optimization problems in the FSW process. Originality/value The present study is unique in the multi-response optimization of FSWed 6061-T6 Al alloy using the Taguchi and GRA methodology. The weld material having better mechanical properties is essential for the material industry.

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A review of various improvement strategies for joint quality of AA 6061-T6 friction stir weldments

Cited by 51 publications

References 106 publications

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

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

Mechanical Property Improvement in Dissimilar Friction Stir Welded Al5083/Al6061 Joints: Effects of Post-Weld Heat Treatment and Abnormal Grain Growth

Multi-response optimization of process parameters in friction stir welded aluminum 6061-T6 alloy using Taguchi grey relational analysis

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