Influence of probe length on the formation of an interface in friction stir welded T-lap joints

Duong, Hao Dinh; Okazaki, Masakazu; Tran, Tra Hung

doi:10.1080/10426914.2020.1854470

Cited by 10 publications

(5 citation statements)

References 25 publications

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“…This "kissing bond" is unavoidable because the length of the pin should be less than the thickness of the Al so that the lower part of the specimen does not come into contact with the pin. This kissing bond, which exists in the fillet corner (see Figure 13a), has been previously reported during the T-joining of Al alloys by FSW [20]. The entrapped Al fragment inside the steel at the end-face of St (Figure 6d) is due to the combined upward and inside-lateral flow of St in the first and second welding passes (Figure 13a).…”

Section: Discussionsupporting

confidence: 78%

“…The heat effect of the second pass on the first one can also influence fracture behavior [19]. Doung et al [20] joined two dissimilar aluminum alloys (AA7075 and AA5083) in a lap configuration with a lap weld design in one pass. They found that the parameters which favor the strength in the skin direction may reduce the joint efficiency in the stringer direction.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Lap-Butt Joint Design for FSW of Aluminum to Steel in Tee-Configuration: Joining Mechanism, Intermetallic Formation, and Fracture Behavior

Beygi,

Talkhabi,

Mehrizi

et al. 2023

Metals

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The development of new joint configurations suitable for dissimilar materials enables a wider range of applications and allows for an accelerated replacement of traditional structural construction materials by lightweight materials. The T-configuration is a joint configuration that has not been sufficiently studied for use with dissimilar materials, especially when created using the friction stir welding (FSW) process. In this study, a combined lap/butt design was introduced and implemented, seeking to create a T-joint between aluminum and steel. Characterization of the joints showed that FSW could be successfully used to join aluminum and steel in a T-configuration. The formation of intermetallic bonds and kissing bonds was carefully analyzed, and their contribution to the fracture behavior during loading in the skin and stringer directions was studied. Finite element simulation was used to determine the stress state at the interface during loading. The characterization results showed that the intermetallic, as an indicator of metallurgical bonding, is formed when special features are observed in the pattern of material flow. The fractography images showed that the stress state has a major impact on the fracture. The results of the present study can be effectively used to design and fabricate dissimilar joints, taking into account the loading condition.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

A Novel Lap-Butt Joint Design for FSW of Aluminum to Steel in Tee-Configuration: Joining Mechanism, Intermetallic Formation, and Fracture Behavior

Beygi,

Talkhabi,

Mehrizi

et al. 2023

Metals

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“…The T6 temper generates relatively high strength due to the ideal generation of the Mg 2 Zn and Al 2 CuMg strengthening precipitates [34,35]. This alloy was chosen for the present study for its industry relevance and to allow for direct comparison to prior friction-stir processing studies [36][37][38].…”

Section: Methodsmentioning

confidence: 99%

Parametric Investigation of Parallel Deposition Passes on the Microstructure and Mechanical Properties of 7075 Aluminum Alloy Processed with Additive Friction Stir Deposition

Cahalan,

Williams,

Brewer

et al. 2024

Applied Sciences

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Large-scale metal additive manufacturing (AM) provides a unique solution to rapidly develop prototype components with net-shape or near-net shape geometries. Specifically, additive friction stir deposition (AFSD) is a solid-state method for large-scale metal AM that produces near-net shape depositions capable of high deposition rates. As AFSD is utilized for a broader range of applications, there is a need to understand deposition strategies for larger and more complex geometries. In particular, components with larger surface areas will require overlapping deposition passes within a single layer. In this study, the AFSD process was used to create depositions utilizing multiple passes with a varying deposition path overlap width. The effects of overlapping parallel pass depositions on the mechanical and microstructural properties of aluminum alloy 7075 were examined. The grain size and microstructural features of the deposited material were analyzed to evaluate material mixing and plastic flow in the observed overlap regions. Additionally, hardness and tensile experiments were conducted to observe the relationship between the overlap width and as-deposited material behavior. In this study, an ideal overlap width was found that produced acceptable as-deposited material properties.

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“…6(c). This result might relate to increase in eff ective stirring action that depend on the pin length [13]. Increasing the length of pin would lead to breaking the oxide layer along the welding interface.…”

Section: Microstructure and Interfacial Bondingmentioning

confidence: 99%

“…Therefore, it contributes to reducing environmental pollutants. The role of probe length in interface formation of FSWed T-lap joint was investigated in former research [13]. The results show that changing probe length would lead to signifi cant diff erence in interface morphology.…”

Section: Introductionmentioning

confidence: 99%

Effect of probe length on tensile strength of dissimilar friction stir welded lap-joint between AA6061 and 316 stainless steel using marine structure

Hồ,

Quan Minh Nguyen,

Thuyen Van Phi

et al. 2024

JFST

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Recently, optimizing marine structure have been facing with a lot of challenges to reducing weight, increasing strength, and improving resistance corrosion. Using dissimilar joint may be one of the suitable solutions for manufacturer. In this study, dissimilar lap-joints between aluminum alloys 6061 and 316 stainless steel was produced by friction stir welding technology. The attention was put on the effect of different probe lengths on joint strength. The probe length was arranged from 2.7 mm to 2.9 mm. The experimental results show that the tensile strength of lap-joints increased with long probe length. The highest tensile strength is obtained approximately 6976 at the probe length of 2.9 mm that fracture location was found at aluminum side. The impact of interface properties on the joint strength was investigated and analyzed in this work. Key works: Dissimilar joint, FSW, probe length, tensile strength.

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Influence of probe length on the formation of an interface in friction stir welded T-lap joints

Cited by 10 publications

References 25 publications

A Novel Lap-Butt Joint Design for FSW of Aluminum to Steel in Tee-Configuration: Joining Mechanism, Intermetallic Formation, and Fracture Behavior

A Novel Lap-Butt Joint Design for FSW of Aluminum to Steel in Tee-Configuration: Joining Mechanism, Intermetallic Formation, and Fracture Behavior

Parametric Investigation of Parallel Deposition Passes on the Microstructure and Mechanical Properties of 7075 Aluminum Alloy Processed with Additive Friction Stir Deposition

Effect of probe length on tensile strength of dissimilar friction stir welded lap-joint between AA6061 and 316 stainless steel using marine structure

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