Friction Stir Welding Tool Design and Their Effect on Welding of AA-6082 T6

Ullegaddi, Kalmeshwar; Murthy, Veeresh; Harsha, R.N.; Manjunatha.,

doi:10.1016/j.matpr.2017.07.133

Cited by 14 publications

(12 citation statements)

References 2 publications

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“…The geometry of the tool has a large impact on both strength and the microstructural parameters of the finished joint [8][9][10][11][12][13]. In addition to the shape of the tools, there are many technological parameters affecting the properties of the joint.…”

Section: Friction Stir Weldingmentioning

confidence: 99%

Effect of Selected Friction Stir Welding Parameters on Mechanical Properties of Joints

Kossakowski

Wciślik

Bakalarz

2019

Archives of Civil Engineering

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The article discusses the basic issues related to the technology of friction stir welding (FSW). A short description of technology is provided. The following section provides the analysis of effect of technological parameters (tool rotation and welding speed) on the mechanical properties of the prepared joint (strength, ductility, microhardness). In both cases the analysis refers to aluminum alloys (6056 and AA2195-T0). The comparative analysis showed the phenomenon of the increase in weld strength along with the increase in the rotational speed of the tool during welding. Similarly, with the increase in welding speed, an increase in weld strength was observed. Some exceptions have been observed from the above relations, as described in the article. In addition, examples of material hardness distribution in the joint are presented, indicating their lack of symmetry, caused by the rotational movement of the tool. The analyses were performed basing on the literature data.

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Section: Friction Stir Weldingmentioning

confidence: 99%

Effect of Selected Friction Stir Welding Parameters on Mechanical Properties of Joints

Kossakowski

Wciślik

Bakalarz

2019

Archives of Civil Engineering

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“…This indirect approach is economical comparing to the use of load cell and has been applied on AA2024-T4 aluminium welding by Su et al Results show that the tool torque decrease when increasing tool rotation while the increase in traverse force is linked to both welding speed and tool rotation speed. More recently, Ullegaddi et al (2017) have also investigated the effect of shoulder geometry and surface forces on the welding of AA6082-T6 aluminium alloys through a parametric study. They conclude that concave shoulder with tapered pin provide better results despite requiring more force.…”

Section: Ii3 Mechanical Aspectsmentioning

confidence: 99%

A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

Jacquin

Guillemot

2021

Journal of Materials Processing Technology

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Friction stir welding (FSW) process is currently considered as a promising alternative to join aluminium alloys. Indeed, this solid-state welding technique is particularly recommended for the assembly of these materials. Since parts are not heated above their melting temperature, FSW process may prevent solidification defects encountered in joining aluminium alloys and known as limitations to the dissemination of these materials in industries. During the past years, large literature has been devoted to the modelling of microstructural evolution in aluminium alloys during FSW processes and mainly dedicated to the analysis of precipitate evolutions and grain recrystallization mechanisms. Precipitate size distribution models have aroused widespread interest in recent years demonstrating their relevance to follow precipitation process in multicomponent alloys and multiphase systems. Efficient recrystallization models are also available and based on various grain growth mechanisms. In addition, multi-scale coupling strategies have recently emerged considering thermal, mechanical and metallurgical solutions. Consequently, the effect of FSW process parameters on weld properties is now investigated to determine optimized welding strategies regarding microstructure evolution. This research is based on reliable models reported in the literature enhancing the estimation of final weld state and associated properties as an answer to industrial needs. Validations of proposed modelling strategies have been reported based on in-depth analyses of experimental observations. This present work proposes a review of recent models dedicated to microstructural evolutions in aluminium alloys during FSW process. The interest and efficiency of current approaches will be discussed to highlight their limitations. Guidelines will propose new routes toward enhanced modelling strategies for future developments.

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“…However, in some case studies, the AISI H13based steel tool is generally recommended for welding aluminum alloys within 0.5-50 mm but with more challenging or highly abrasive materials [8]. Many researchers in the tool geometry investigation have proved that FSW tool profile designs have crucial effects on enhancing welding sound joints [9]. Moreover, the discrepancy of the tool geometry proves that the parameters change, besides the type of material and the thickness used in FSW are further concerns in this regard.…”

Section: Introductionmentioning

confidence: 99%

Influence of Friction Stir Welding Process on the Mechanical Characteristics of the Hybrid Joints AA2198-T8 to AA2024-T3

Alemdar

Jalal

Mulapeer

2022

Advances in Materials Science and Engineering

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The study presents the hybrid joining of the third generation AA2198-T8 aluminum lithium alloy to AA2024-T3 aluminum copper alloy, which has been highly demanded recently in the aerospace industry. This investigation aims to reduce the cost of production in the industrial sector. As a result, an affordable alternative is to use hybrid designs using AA2198-T8 alloy in crucial parts and AA2024-T3 alloy in the rest of the structure. A joining method is required to create hybrid structures composed of last-generation and standard aluminum alloys. The joining process was successfully friction stir-welded using five different welding travel speeds—36, 76, 102, 146, and 216 mm/min—with an invariable spindle speed of 960 rev/min. Two reversed steps, double-sided friction stir welding (DS-FSW) and single-sided friction stir welding (SS-FSW) techniques with two appropriate tool designs, were employed to investigate the dissimilar material mechanical properties and their morphological changes. The experimental outcomes show that DS-FSW of the reversed steps has a higher joining strength than SS-FSW for all the welding parameters studied. The variation in travel speeds provided the highest strength at 102 mm/min travel welding speeds for DS-FSW. Therefore, it is found that, from the three tensile samples, tensile strength, yield strength, and elongation of the joint were 407.1 MPa, 271.2 MPa, and 9.5%, respectively. The joint efficiency reached 87% compared with the base material tensile strength of AA2024-T3. Furthermore, fractures of the tensile samples were found in the vicinity of the thermomechanically affected zone (TMAZ) of the AA2198-T8 side. The microhardness and morphology results correspondingly have precise predictions for the fracture zone of the joints in this research examination.

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Friction Stir Welding Tool Design and Their Effect on Welding of AA-6082 T6

Cited by 14 publications

References 2 publications

Effect of Selected Friction Stir Welding Parameters on Mechanical Properties of Joints

Effect of Selected Friction Stir Welding Parameters on Mechanical Properties of Joints

A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

Influence of Friction Stir Welding Process on the Mechanical Characteristics of the Hybrid Joints AA2198-T8 to AA2024-T3

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