Microstructure and Mechanical Properties of Friction Stir Welded 5083 and 7075 Aluminum Alloys

Kalemba–Rec, Izabela; Hamilton, C.; Kopyściański, Mateusz; Miara, Damian; Krasnowski, Krzysztof

doi:10.1007/s11665-017-2543-8

Cited by 28 publications

(12 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The defects were located in the stir zone on the advancing side. The advancing side temperatures are hotter than those on the retreating side [21], and at higher tool rotational speeds on the advancing, the excess heat input may be generated resulting in abnormal material stirring and formation of defects. Analysis of the macrostructure suggests that the shape of the region where the material is stirred, observed on the crosssection, changes with an increase in the tool rotational speed.…”

Section: Methodsmentioning

confidence: 99%

Effect of process parameters on mechanical properties of friction stir welded dissimilar 7075-T651 and 5083-H111 aluminum alloys

Kalemba–Rec

Kopyściański

Miara

et al. 2018

Int J Adv Manuf Technol

View full text Add to dashboard Cite

In this paper, the influence of process parameters (tool rotational speed, pin design, and configuration of joined alloys) on the macrostructure and mechanical properties of friction stir welded aluminum alloys 7075-T651 and 5083-H111 was characterized. The tool rotational speed and the alloy placement significantly influenced the formation of the weld (especially the stir zone). Superior mixing of materials was obtained at higher rotational speeds and in the configuration with 5083 on the advancing side and 7075 on the retreating side. However, under these conditions, more defects, such as porosity, voids, or wormholes, were found in the stir zone. Regardless of the pin design and weld configuration, with an increasing tool rotational speed, the mechanical properties decrease. Using the Triflute pin, however, guarantees higher tensile strength and weld efficiency (above 100%). The weld configuration did not influence the mechanical properties. The highest tensile strength (371 MPa) defect-free joint was obtained with 5083 on the advancing side, 7075 on the retreating side, a tool rotational speed of 280 rpm, and the Triflute pin.

show abstract

Section: Methodsmentioning

confidence: 99%

Effect of process parameters on mechanical properties of friction stir welded dissimilar 7075-T651 and 5083-H111 aluminum alloys

Kalemba–Rec

Kopyściański

Miara

et al. 2018

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Recently, the friction stir welding (FSW) of dissimilar 2 of 20 aluminum alloys combinations has been studied extensively, which proved the potential of the process to join these alloy combinations [4][5][6]. However, improper FSW parameters give rise to the formation of intermetallic compounds and internal and external defects (e.g., tunnel formation, voids, surface grooves and flash) [6][7][8][9][10]. Therefore, the investigation of FSW parameters is very important for obtaining defect-free joints with good mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the investigation of FSW parameters is very important for obtaining defect-free joints with good mechanical properties. The placement of the higher strength aluminum alloys at the advancing side (AS) or at the retreating side (RS) affects material flow as it strongly influences material the stirring and flow behavior [10,11]. This can be a crucial parameter affecting the final joint microstructure, particularly when the selected combinations of base material (BM) have significant differences in their mechanical properties, microstructure and texture [4,[12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Ahmed

Ataya

Seleman

et al. 2020

Metals

View full text Add to dashboard Cite

The current work presents a detailed investigation for the effect of a wide range friction stir welding (FSW) parameters on the dissimilar joints’ quality of aluminum alloys. Two groups of dissimilar weldments have been produced between AA5083/AA5754 and A5083/AA7020 using tool rotational rates range from 300 to 600 rpm, and tool traverse speeds range from 20 to 80 mm/min. In addition, the effect of reversing the position of the high strength alloy at the advancing side and at retreating side has been investigated. The produced joints have been investigated using macro examination, hardness testing and tensile testing. The results showed that sound joints are obtained at the low heat input FSW parameters investigated while increasing the heat input results in tunnel defects. The hardness profile obtained in the dissimilar AA5083/AA5754 joints is the typical FSW hardness profile of these alloys in which the hardness reduced in the nugget zone due to the loss of the cold deformation strengthening. However, the profile of the dissimilar AA5083/AA7020 showed increase in the hardness in the nugget due to the intimate mixing the high strength alloy with the low strength alloy. The sound joints in both groups of the dissimilar joints showed very high joint strength with efficiency up to 97 and 98%. Having the high strength alloy at the advancing side gives high joint strength and efficiency. Furthermore, the sound joints showed ductile fracture mechanism with clear dimple features mainly and significant plastic deformation occurred before fracture. Moreover, the fracture in these joints occurred in the base materials. On the other, the joints with tunnel defect showed some features of brittle fracture due to the acceleration of the existing crack propagation upon tensile loading.

show abstract

“…Friction Stir Welding (FSW) has been developing as a strategic technology to solve Duong, Okazaki and Tran, Mechanical Engineering Journal, Vol.6, No.4 (2019) [DOI: 10.1299/mej.19-00091] these difficulties (Thomas et al, 1991;Tokisue et al, 2005;Sato et al, 2005). As evidence, some previous studies have successfully fabricated the FSWs of dissimilar AA5083 and AA7075 (Ahmed et al, 2017;Kalemba-Rec et al, 2017). However, these works have only focused on butt-joints, which are considered to be easier to employ with the FSW technique than lap-joints and T-joints (Mishra et al, 2005;Tokisue et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of welding parameters on mechanical properties of friction stir welded T-lap dissimilar metal joints between 7075 and 5083 aluminum alloys

Duong

Okazaki

Tran

2019

Mechanical Engineering Journal

View full text Add to dashboard Cite

Dissimilar T-lap joint between aluminum alloy 7075-T651 and 5083-H116 was fabricated by friction stir welding. Special focus was paid to the defect formation and mechanical properties which were significantly affected by the welding parameters. The results showed that four typical types of defects were detected in the T-lap joint; tunnel, kissing bond, hook, and bonding line defects. The tunnel and bonding line defects could be avoidable by decreasing the welding rate. At low welding rate, however, the hook defect was formed and reduced the skin effective thickness. The kissing bond defect was too hard to be eliminated by using one welding pass only by changing the welding parameters. Among these defects, the hook defect played the important role in the mechanical properties of T-lap joint. It is a special finding that there was the optimum welding rate by which the maximum joint efficiency was attained. These findings were summarized into the table and map which can optimize the joint properties.

show abstract

Microstructure and Mechanical Properties of Friction Stir Welded 5083 and 7075 Aluminum Alloys

Cited by 28 publications

References 36 publications

Effect of process parameters on mechanical properties of friction stir welded dissimilar 7075-T651 and 5083-H111 aluminum alloys

Effect of process parameters on mechanical properties of friction stir welded dissimilar 7075-T651 and 5083-H111 aluminum alloys

Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Effect of welding parameters on mechanical properties of friction stir welded T-lap dissimilar metal joints between 7075 and 5083 aluminum alloys

Contact Info

Product

Resources

About