Study on the new friction stir spot weld joint reinforcement technique on 5754 aluminum alloy

Andalib, Hossein; Farahani, Mohammad Reza; Enami, M.

doi:10.1177/0954406217729419

Cited by 18 publications

(17 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence the increase in PD results in the formation of hooks at the interface. 32–35 The SD and PD have a vital role in obtaining joint with superior interfacial strength. At lower levels of SD and PD, there is poor plasticisation and reduced material flow to obtain a stronger interfacial bonding.…”

Section: Resultsmentioning

confidence: 99%

Process parameter optimisation in pinless friction stir spot welding of dissimilar aluminium alloys using Multi-start algorithm

Suryanarayanan

Sridhar

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Friction stir spot welding, a solid-state metal joining process has been utilised to join dissimilar aluminium alloys using pinless tools. The optimal welding conditions were predicted using the Multi-start algorithm with 25 starting points and were validated by confirmation tests. The Multi-start algorithm predicted the maximum tensile shear force of 6.28 kN at the tool rotational speed of 841.83 r/min, plunge depth of 0.618 mm, shoulder diameter of 24.99 mm, plunging speed of 0.04 mm/s and dwell time of 8 s. The scanning electron microscopy analysis revealed the formation of flatter hooks in the weld zone. The electron backscatter diffraction scans revealed a decrease in grain size at the lower sheet (Al 5754) due to the action of 30 kN axial force during pinless friction stir spot welding. Two different modes of fracture were observed: (i) nugget pull-out with necking; (ii) shearing. The fracture modes were observed to be dependent on the process parameters like shoulder diameter and plunge depth.

show abstract

Section: Resultsmentioning

confidence: 99%

Process parameter optimisation in pinless friction stir spot welding of dissimilar aluminium alloys using Multi-start algorithm

Suryanarayanan

Sridhar

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Samples were coated using a plasma spray method. The Ni5Al (wt %) powder (provided by the Metco company), with particle size of 45–90 μm, was used as a feedstock material [27]. Ni5Al coatings are dense and resistant to oxidation and abrasion, recommended for use as oxidation-resistant bond coats which can be used up to 800 °C (1470 F).…”

Section: Methodsmentioning

confidence: 99%

Corrosion resistance and hydrophilic properties of plasma sprayed Ni+5%Al coatings

Hajideh

Farahani

Pakravan

et al. 2019

Heliyon

Self Cite

View full text Add to dashboard Cite

In this research, the AZ31 Mg alloy was coated with Ni5Al powder, using a plasma spray method. Effects of nuzzle distance and number of passes on corrosion behavior, hydrophilic properties and phase structure of the coated layer were studied. Samples in different distance of nozzle (150 and 300 mm) and different number of passes (2, 4 and 6) were examined. Corrosion behavior characterization was carried out using electrochemical impedance spectroscopy and potentiodynamic polarization methods. Hydrophilic properties of the coated layer were also investigated by the contact angle method. Results showed that by increasing the number of passes, the corrosion resistance and the contact angle were increased. On the other side, by increasing the nuzzle distance, the corrosion resistance and the contact angle were decreased. The Coated sample with 6 pass coating and nozzle distance of 150 mm had the best corrosion behavior and hydrophilic properties.

show abstract

“…There are various technique for joining the Al to Cu such as friction stir welding and explosion welding. 4,5 According to novel advantages of Cu and Al bonding based on transient liquid phase bonding (TLP), this technique was considered in this study. Finding the optimum joining condition were considered as the main goal in this research.…”

Section: Introductionmentioning

confidence: 99%

Transient liquid phase bonding of Cu and Al using metallic particles interlayers

Zaheri

Farahani

Sadeghi

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

Self Cite

View full text Add to dashboard Cite

The bonding strength, and microstructures of Cu and Al couples using metallic powders as interlayer during transient liquid phase bonding (TLP bonding) were investigated. The interfacial morphologies and microstructures were studied by scanning electron microscopy equipped with energy dispersive X-ray spectroscopy, and X-ray diffraction. First, to explore the optimum bonding time and temperature, nine samples were bonded without interlayers in a vacuum condition. Mechanical test results indicated that bonding at 560°C in 20 min returns the highest bond strength (84% of Al). This bonding condition was used to join ten samples with powder interlayers. Powders were prepared by mixing different combinations of Cu, Al (+Fe nanoparticles) and Zn. In the bonding zone, different Cu9Al4, CuAl, and CuAl2 intermetallic co-precipitate. The strongest bonding is formed in the sample with the 70Al (+Fe)-30Cu powder interlayer. Powder interlayers present thinner and more uniform intermetallic layers at the joint interface.

show abstract

Study on the new friction stir spot weld joint reinforcement technique on 5754 aluminum alloy

Cited by 18 publications

References 27 publications

Process parameter optimisation in pinless friction stir spot welding of dissimilar aluminium alloys using Multi-start algorithm

Process parameter optimisation in pinless friction stir spot welding of dissimilar aluminium alloys using Multi-start algorithm

Corrosion resistance and hydrophilic properties of plasma sprayed Ni+5%Al coatings

Transient liquid phase bonding of Cu and Al using metallic particles interlayers

Contact Info

Product

Resources

About