Identifying combination of friction stir welding parameters to maximize strength of lap joints of AA2014-T6 aluminium alloy

Rajendran, C. P.; Srinivasan, K.; Balasubramanian, V.; Balaji, H.; Selvaraj, P.

doi:10.1080/14484846.2017.1304843

Cited by 32 publications

(11 citation statements)

References 21 publications

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“…Due to high rotational speed, it generates high heat input and reduced the cooling rate. As its results, grain coarsening was observed [23]. Hence, the grain size increased.…”

Section: Microstructurementioning

confidence: 70%

“…The higher tool tilt angle makes the redistributed Alclad in the SZ more dispersed, and this prevents the redistributed Alclad from being a preferred crack propagation path to the tensile test. The 90% of fracture location in FSW always at the interface between TMAZ and SZ on advancing side; this is due to thermal softening and grain coarsening during thermal cycle [23,24]. In the weld made with 0.5 ∘ tilt angle the fracture occur to the SZ due to insufficient consolidation, because the lower tilt angle produces less heat generation and lower forging force, this is the reason for the fracture occurred in the stir zone.…”

Section: Relationship Between Tool Tilt Angle and Joint Qualitymentioning

confidence: 98%

“…A bigger shoulder diameter may lead to wider TMAZ and heat affected zone rather than the smaller diameter, due to high peak temperature developed in the SZ (>10 mm) during FSW. It produced grain coarsening, warm hole, dissolution of precipitates and coarsening of some of few precipitates [23]. Moreover, excessive material flow causes thinning effect and reduces the effective sheet thickness and results in inferior tensile strength in FSW joints of AA2014 aluminum alloy.…”

Section: Relationship Between Shoulder Diameter and Joint Qualitymentioning

confidence: 99%

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Mechanical properties and microstructural characteristics of friction stir welded AA2014-T6 aluminium alloy joints

Chinnasamy¹,

Srinivasan

Balasubramanian

et al. 2019

Journal of the Mechanical Behavior of Materials

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The quality of friction stir welded joints depends upon the working parameters such as rotational speed, welding speed, shoulder diameter, tilt angle; etc. Each process parameter has a significant effect on the formation of joint strength. This investigation attempts to understand the effect of friction stir welding parameters on microstructural characteristics and tensile strength of AA2014-T6 aluminium alloy. This is performed by changing any one of the process parameters from minimum to maximum and keeping others constant. The joint fabricated from a rotational speed of 1500 rpm, welding speed of 40 mm/min, shoulder diameter of 6 mm and tilt angle of 1.5∘ yielded superior tensile properties compared to their counter joints. Due to the formation of defect-free weld, balanced material flow and uniform distribution of strengthening precipitates in the stir zone is achieved.

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“…Due to high rotational speed, it generates high heat input and reduced the cooling rate. As its results, grain coarsening was observed [23]. Hence, the grain size increased.…”

Section: Microstructurementioning

confidence: 70%

Section: Relationship Between Tool Tilt Angle and Joint Qualitymentioning

confidence: 98%

Section: Relationship Between Shoulder Diameter and Joint Qualitymentioning

confidence: 99%

See 1 more Smart Citation

Mechanical properties and microstructural characteristics of friction stir welded AA2014-T6 aluminium alloy joints

Chinnasamy¹,

Srinivasan

Balasubramanian

et al. 2019

Journal of the Mechanical Behavior of Materials

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show abstract

“…The significance of each co-efficient was calculated from student t-test and p-values, which are listed in Table 4, The final empirical relationship was constructed using only these co-efficient [5], [6] and the developed empirical relationship of FSW joints is given belowUTS = [+369.16+9.58 (N)+10.58 (S)+12.25(D)+13.75(Q)-7.0(ND) +7.75 (S D)– 8.87(D Q)-34.1 (N 2 ) -29.1(S 2 ) -7.2(D 2 )- 35.22 (Q 2 ) MPa…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data set on prediction of friction stir welding parameters to achieve maximum strength of AA2014-T6 aluminium alloy joints

Rajendran¹,

Srinivasan

Balasubramanian

et al. 2019

Data in Brief

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Statistical tools such as design of experiments (DoE), analysis of variance (ANOVA) were used to develop the empirical relationship, to predict the ultimate tensile strength of the joint at the 95% percent confidence level. Response surface graph and contour plots were constructed using response surface methodology (RSM) concept. From this investigation, it is found that the joint fabricated with a tool rotational speed of 1500 rpm, welding speed of 40 mm/min, tool tilt angle of 1.5° and tool shoulder diameter of 6 mm, exhibited maximum tensile strength of 380 MPa.

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“…At the same time, due to the high temperature of the weld during the welding process, aluminum and magnesium were easily oxidized to form an oxide film. [22], which is a prerequisite for aluminum-magnesium welding.…”

Section: Defect Characteristicsmentioning

confidence: 99%

Effect of Traverse Speed on the Defect Characteristic, Microstructure, and Mechanical Property of Friction Stir Welded T‐Joints of Dissimilar Mg/Al Alloy

Sun

Shen

et al. 2020

Advances in Materials Science and Engineering

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The AZ31 B/2024-T4 T-lap-joint was successfully fabricated by friction stir welding (FSW) with different welding parameters. The defect characteristics and metallurgical structure were observed and analyzed using optical microscope (OM) and scanning electron microscopy (SEM). Besides, the effects of defects and welding parameters on mechanical properties were investigated. The results show that an effective metallurgical reaction zone can be formed between Mg and Al (Mg-Al MRZ) and the island structures and lamellar structures appeared in the Mg-Al MRZ. The T-joints without tunnel defects can be obtained and the excellent mechanical properties of the T-joint were achieved using the welding speed of 50 mm/min. The tensile strength along the skin and the stringer was mainly affected by the kiss bonding defects.

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Identifying combination of friction stir welding parameters to maximize strength of lap joints of AA2014-T6 aluminium alloy

Cited by 32 publications

References 21 publications

Mechanical properties and microstructural characteristics of friction stir welded AA2014-T6 aluminium alloy joints

Mechanical properties and microstructural characteristics of friction stir welded AA2014-T6 aluminium alloy joints

Data set on prediction of friction stir welding parameters to achieve maximum strength of AA2014-T6 aluminium alloy joints

Effect of Traverse Speed on the Defect Characteristic, Microstructure, and Mechanical Property of Friction Stir Welded T‐Joints of Dissimilar Mg/Al Alloy

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