Maintaining nano-lamellar microstructure in friction stir welding (FSW) of accumulative roll bonded (ARB) Cu-Nb nano-lamellar composites (NLC)

Schneider, Judy; Cobb, Josef; Carpenter, John S.; Mara, Nathan A.

doi:10.1016/j.jmst.2017.10.016

Cited by 16 publications

(3 citation statements)

References 36 publications

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“…Regardless the metallurgy of the weld, in FSW process, the weld configuration and the welding operational parameters play a major role in creating a high strength joint placing the copper plate on the retreating side in a butt-joint during conventional FSW has been shown to cause macro-size voids or the open tunnel void, while placing Cu on the advancing side would allow for a defect-free weld. A tunnelling defect appears as a continuous pattern of voids beneath the shoulder and above the root of the weld in FSW [43].…”

Section: Dissimilar Joints: Partnerships With Coppermentioning

confidence: 99%

Characterization of Dissimilar Al-Cu BFSW Welds; Interfacial Microstructure, Flow Mechanism and Intermetallics Formation

Tamadon

Abdali

Pons

et al. 2020

Advances in Materials Science

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The purpose of this study is to elucidate the flow features of the dissimilar Al-Cu welded plates. The welding method used is Bobbin Friction Stir Welding (BFSW), and the joint is between two dissimilar materials, aluminium alloy (AA6082-T6) and pure copper. Weld samples were cut from along the weld line, and the cross-sections were polished and observed under an optical microscope (OM). Particular regions of interest were examined under a scanning electron microscope (SEM) and analysed with Energy Dispersive X-ray Spectroscopy (EDS) using the AZtec software from Oxford Instruments. The results and images attained were compared to other similar studies. The reason for fracture was mainly attributed to the welding parameters used; a higher rotational speed may be required to achieve a successful BFSW between these two materials. The impact of welding parameters on the Al-Cu flow bonding and evolution of the intermetallic compounds were identified by studying the interfacial microstructure at the location of the tool action. The work makes an original contribution to identifying the solid-phase hybrid bonding in Al-Cu joints to improve the understanding of the flow behaviours during the BFSW welding process. The microstructural evolution of the dissimilar weld has made it possible to develop a physical model proposed for the flow failure mechanism.

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Section: Dissimilar Joints: Partnerships With Coppermentioning

confidence: 99%

Characterization of Dissimilar Al-Cu BFSW Welds; Interfacial Microstructure, Flow Mechanism and Intermetallics Formation

Tamadon

Abdali

Pons

et al. 2020

Advances in Materials Science

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“…FSP has many other advantages such as eliminating casting defects such as porosity, voids along with these it provides microstructural modification, densification and homogeneity of particles simultaneously (Liu and Ma, 2010; Mandal, 2015). This process transformed the heterogeneous microstructure to a more homogenous and refined microstructure and improved the ultimate tensile strength and percentage of elongation of the metal (Ni et al , 2009; Moustafa et al , 2017; Schneider et al , 2017; Sanjay et al , 2013). FSP enhanced the specific properties due to the thermo-mechanical process involvement (Węglowski, 2018; Rosemark et al , 2006).…”

Section: Introductionmentioning

confidence: 99%

“…In FSP, thermo-mechanical metal working process takes place for altering the properties of localized area on the surface of the base metal (BM) without changing properties in the structure (Schneider et al , 2017; Dinaharan et al , 2016b). Working principle of FSP is shown in Figure 1 (Nelaturu et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

Surface development by reinforcing nano-composites during friction stir processing – a review

Swathi

Raju

Ramulu

2019

JEDT

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Purpose Friction stir processing (FSP) is overviewed with the process variables, along with the thermal aspect of different metals. Design/methodology/approach With its inbuilt advantages, FSP is used to reduce the failure in the structural integrity of the body panels of automobiles, airplanes and lashing rails. FSP has excellent process ability and surface treatability with good corrosion resistance and high strength at elevated temperatures. Process parameters such as rotation speed of the tool, traverse speed, tool tilt angle, groove design, volume fraction and increase in number of tool passes should be considered for generating a processed and defect-free surface of the workpiece. Findings FSP process is used for modifying the surface by reinforcement of composites to improve the mechanical properties and results in the ultrafine grain refinement of microstructure. FSP uses the frictional heat and mechanical deformation for achieving the maximum performance using the low-cost tool; the production time is also very less. Originality/value 100

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High Depth-to-Width Ratio Friction Stir Welding

Huang,

Xie,

Meng

2024

Materials Forming, Machining and Tribology

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Maintaining nano-lamellar microstructure in friction stir welding (FSW) of accumulative roll bonded (ARB) Cu-Nb nano-lamellar composites (NLC)

Cited by 16 publications

References 36 publications

Characterization of Dissimilar Al-Cu BFSW Welds; Interfacial Microstructure, Flow Mechanism and Intermetallics Formation

Characterization of Dissimilar Al-Cu BFSW Welds; Interfacial Microstructure, Flow Mechanism and Intermetallics Formation

Surface development by reinforcing nano-composites during friction stir processing – a review

High Depth-to-Width Ratio Friction Stir Welding

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