Effect of Rotation Speed on Microstructure and Mechanical Properties of Continuous Drive Friction Welded Dissimilar Joints of 6061-T6 Al and Copper

Zhu, Xianyong; Fan, Yuexiang; Xie, Liangwen; Xiong, Xiang; Wang, Peng; Song, Yang; Jiang, Cheng

doi:10.3390/met12071173

Cited by 8 publications

(3 citation statements)

References 31 publications

(48 reference statements)

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“…Under thermal cycling, the material temperature consistently surpasses its recrystallisation temperature (T ≥ Tm). This perpetuates the dynamic recovery of grains, retains LAGBs to some extent, and directionally promotes grain growth, thereby mitigating the proportion of HAGBs [50,51]. According to the above analysis, continuous dynamic recrystallisation was generated within the material during the AFSD process, as shown in Figure 14d, and the percentages of recrystallised grains in AFSD samples under NO.1, NO.2, and NO.3 parameter conditions were 57.26%, 39.05%, and 3.69%, respectively.…”

Section: Analysis Of Microstructurementioning

confidence: 99%

Effect of Rotational Shear and Heat Input on the Microstructure and Mechanical Properties of Large-Diameter 6061 Aluminium Alloy Additive Friction Stir Deposition

Zhu,

Wang,

Wang

et al. 2024

Crystals

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Additive friction stir deposition (AFSD), in which molten metal materials are formed into free-form stacked structural parts according to the path design, may have a wide range of applications in high-efficiency mass production. In this study, experiments were conducted for the rotational speed in the AFSD parameters of 6061 aluminium alloy bars to investigate the effects of different rotational shear conditions and heat inputs on the properties of the deposited layer for diameter bars based on the analysis of the micro-morphology, micro-tissue composition, and mechanical properties. The width and thickness of each layer were constant, approximately 40 mm wide and 2.5 mm thick. The particle undulations on the surface of the deposited layer were positively correlated with the AFSD rotational speed. Continuous dynamic recrystallisation in the AFSD process can achieve more than 90% grain refinement. When the rotational speed increases, it causes localised significant orientation and secondary deformation within the recrystallised grains. The ultimate tensile strength of the deposited layer was positively correlated with the rotational speed, reaching a maximum of 211 MPa, and the elongation was negatively correlated with the rotational speed, with a maximum material elongation of 37%. The cross-section hardness of the deposited layer was negatively correlated with the number of thermal cycles, with the lowest hardness being about 45% of the base material and the highest hardness being about 80% of the base material.

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Section: Analysis Of Microstructurementioning

confidence: 99%

Effect of Rotational Shear and Heat Input on the Microstructure and Mechanical Properties of Large-Diameter 6061 Aluminium Alloy Additive Friction Stir Deposition

Zhu,

Wang,

Wang

et al. 2024

Crystals

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“…Friction welding is a welding technique in the solid state. Solid-state welding is the joining of two material surfaces at a temperature below the melting point of the materials being joined and without the addition of filler metal (Suwanda et al, 2020a;Tashkandi & Gamil, 2022;Zhu et al, 2022). The two metals will be joined by combining heat and forging pressure (Husodo et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Friction Pressure on the Mechanical Properties of CDFW Dissimilar Aluminium 6061-T6 and Stainless steel 304 Welding Joints

Suwanda,

Yulianto,

Nugroho

et al. 2024

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Welding technology has significantly developed in the industrial sector along with advances in manufacturing technology. The demand for joining methods combining dissimilar metals is increasing in the industrial sector. However, joining dissimilar metals is challenging because of differences in physical and mechanical properties. Continuous drive friction welding is a solid-state joining method widely used to join dissimilar metals. The research aimed to determine the effect of variations in friction pressure on the mechanical properties of continuous drive friction welding joints with dissimilar materials, Aluminum 6061 T6 and Stainless Steel 304. The process parameters used in this welding were the friction pressures used were 30 MPa, 35 MPa, and 45 MPa. The friction time is 2 seconds, the rotation speed is 1000 rpm, and the upset pressure is 50 MPa. Then, welded joints were evaluated for Vickers microhardness and microstructure observations. Based on the research results, it shows that the temperature distribution and microstructure results show that there is a change in the hardness value of the aluminum material. In contrast, the 304 stainless steel material experiences an insignificant change in the hardness value.

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“…The evolution of the intermetallic components and the microstructure were investigated in the FSW technique, which has a strong effect on the strength of the joint boundary of dissimilar titanium alloys and that of dissimilar aluminum materials [1,2]. The joining of aluminum to copper has been attractive in electric or battery parts, and it has been investigated [3][4][5]. Further, the addition of Ni at the interface and the coating of the titanium layer on the copper side increased the strength [6,7].…”

Section: Introductionmentioning

confidence: 99%

Impact Joining of Pure Copper C1100 and Aluminum Alloy A6061-T6 Plates at Edges

Yamashita

Iwatsuka

Taguchi

et al. 2022

Metals

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Joining of pure copper C1100 and aluminum alloy A6061-T6 plates of 5 mm thickness was investigated. The method was developed by one of the authors, in which the newly created surfaces of a pair of plates obtained by high-speed shear were immediately in contact with a sliding motion with a small overlap length. The total processing time was just about a few milliseconds. To create the new surface, high-speed shaving was also tested. The joining was not possible for the full thickness of the plates. A sharp notch was observed at the joint boundary due to a large shear droop in the copper. Shaving decreased the shear droop, and the joint length through the plate thickness became longer. The joining performance was evaluated by a uniaxial tensile test. The joint efficiency reached 100% using the specimen cut out from the really joined boundary. The affected zone of joining was confirmed by the hardness distribution near the boundary. It was about 30% of the thickness of the plate, which was much smaller than that in welding by heat, and no softened zone was found in both materials.

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Effect of Rotation Speed on Microstructure and Mechanical Properties of Continuous Drive Friction Welded Dissimilar Joints of 6061-T6 Al and Copper

Cited by 8 publications

References 31 publications

Effect of Rotational Shear and Heat Input on the Microstructure and Mechanical Properties of Large-Diameter 6061 Aluminium Alloy Additive Friction Stir Deposition

Effect of Rotational Shear and Heat Input on the Microstructure and Mechanical Properties of Large-Diameter 6061 Aluminium Alloy Additive Friction Stir Deposition

Effect of Friction Pressure on the Mechanical Properties of CDFW Dissimilar Aluminium 6061-T6 and Stainless steel 304 Welding Joints

Impact Joining of Pure Copper C1100 and Aluminum Alloy A6061-T6 Plates at Edges

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