Critical review on friction stir welding of aluminium to copper

Galvão, Ivan; Loureiro, A.; Rodrigues, D.M.

doi:10.1080/13621718.2015.1118813

Cited by 77 publications

(40 citation statements)

References 84 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Also in Fig. 13, at the Cu base metal, from 28 to 42 μm, there is a solid solution of Al in Cu, similar to the one also reported by Galvão et al [27]. The line analysis in Fig. 14 depicts a mixed structure with multiple islands of Al and Cu along a distance from 70 to 250 μm.…”

Section: Microstructure Analysis: Om Sem and Edssupporting

confidence: 80%

Multiphysical characterization of FSW of aluminum electrical busbars with copper ends

Ólafsson

Vilaça

Vesanko³

2019

Weld World

View full text Add to dashboard Cite

This work investigates the benefits of having an aluminum (Al) busbar with welded copper (Cu) ends, and evaluates the force relaxation phenomena of a pre-loaded bolt joint on Cu versus Al, under cyclic thermal loading. The results show a force relaxation rate 50% lower in the Cu-bolted joint compared with the one in Al. The core of this research is the weldability analysis of Al-Cu butt joints made by friction stir welding (FSW). The materials are AA1050 H14/24 and Cu OF 04 with thickness of 6 mm. Temperature monitoring during the FSW cycle emphasize how heat generation depends mostly on local internal viscoplastic deformation. Tensile, bending, and microhardness tests were used to establish the mechanical properties. Optical microscope and scanning electron microscopy were used to characterize the microstructure. Joining mechanisms in the weld were investigated using energy-dispersive X-ray spectroscopy. The FSW resulted in 85% tensile strength efficiency compared to the Al base material, and 97% electrical conductivity efficiency compared to an ideal bimetallic component made of the same materials with no contact resistance. Electrical resistance of the FSW is 200 times lower than the electrical contact resistance between the Al-Cu materials while under high compressive force.

show abstract

Section: Microstructure Analysis: Om Sem and Edssupporting

confidence: 80%

Multiphysical characterization of FSW of aluminum electrical busbars with copper ends

Ólafsson

Vilaça

Vesanko³

2019

Weld World

View full text Add to dashboard Cite

show abstract

“…Similarly, the morphology of the interface and the thickness of the intermetallic compound layers formed impact the mechanical properties of the friction stir weld. Detailed reviews of this topic can be found in the literature [3,4,15].…”

Section: Correlation Between the Process Parameters Characteristics mentioning

confidence: 99%

Friction stir welding of dissimilar metal joints

Zens

Zaeh

Marstatt

et al. 2019

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Friction stir welding is a solid-state welding technology, which is suitable for joining dissimilar metals such as aluminium and copper. Because the solidus temperature is typically not exceeded, the formation of intermetallic phases can be reduced when compared to fusion welding processes. In friction stir welding, the intermetallic layer thickness, which determines the seam properties, is influenced by the welding temperature and is formed in correspondence with the Arrhenius law. It is typically in the range of a few hundred nanometers thick. In turn, the process temperature is determined by the process parameters, primarily the rotational speed and the feed rate of the machine tool. In this study, a temperature-controlled friction stir welding process has been applied to lap joints of aluminium and copper. Welding experiments with various welding speeds and probe lengths were performed in order to assess the effect of the temperature-time profile near the welding interface. The joints were investigated by tensile shear tests as well as optical microscopy and scanning electron microscopy.Friction stir welding of dissimilar metal joints Materialwiss. Werkstofftech. 2019, 50, 949-957

show abstract

“…Aluminum and copper are widely used in aerospace, electronics, chemical and other fields because of their excellent electrical and thermal conductivity [ 1 , 2 , 3 , 4 ]. In the process of equipment processing and manufacturing, the problem of connecting the dissimilar metals aluminum and copper often arises [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Post-Weld Annealing on Microstructure and Growth Behavior of Copper/Aluminum Friction Stir Welded Joint

Jin

et al. 2020

Materials

View full text Add to dashboard Cite

Friction stir welding of 1016 pure aluminum and T2 pure copper with 2 mm thickness was carried out in the form of lap welding of copper on the upper side and aluminum on the lower side. The growth of interface microstructure between 1016 pure aluminum and T2 pure copper welded by friction stir welding was studied. The growth mechanism of the intermetallic compound (IMC) layer in the Cu-Al lap joint was revealed by annealing at 300, 350, 400 °C. The intermetallic compound (IMC) layer in the lap joint grows again during annealing, and only the original structure of the intermetallic compound (IMC) layer grows at lower annealing temperature and holding time. At higher annealing temperature and holding time, the original structure of intermetallic compound (IMC) layer no longer grows, and a new layered structure appears in the middle of the original structure. There is a gradient change of microhardness in the nugget zone. With different holding times, different softening phenomena appear in the metals on both sides of copper and aluminum. When the hardness decreases to a certain extent, it will not continue to decrease with the increase of holding time. When the annealing temperature is 350 °C and 400 °C, the strength of the tensile sample increases first and then decreases with the increase of holding time. At the interface of Cu-Al, the fracture runs through the whole intermetallic compound (IMC) layer.

show abstract

Critical review on friction stir welding of aluminium to copper

Cited by 77 publications

References 84 publications

Multiphysical characterization of FSW of aluminum electrical busbars with copper ends

Multiphysical characterization of FSW of aluminum electrical busbars with copper ends

Friction stir welding of dissimilar metal joints

Effect of Post-Weld Annealing on Microstructure and Growth Behavior of Copper/Aluminum Friction Stir Welded Joint

Contact Info

Product

Resources

About