Microstructural and mechanical characteristics of friction stir welded Al6101/C11000 joints with zinc and silver interlayer

Payak, Viresh; Paulraj, Jawahar; Roy, Barnik Saha; Bhargava, Manish; Choudhury, Smrity

doi:10.1007/s00170-023-11839-7

Cited by 1 publication

(1 citation statement)

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“…Kinetics of formation and disappearance of intermetallics in the Cu-Al, Cu-Zn, and Cu-Sn systems at temperatures from 100 o C to 500 o C was analysed in [3 -6]. Friction stir welding (FSW), for example, has shown significant potential in welding Al-Cu, as it involves low heat input during the joining process, which enables control over the formation of harmful (IMC) layers [7]. In recent years, FSW has gained much attention for joining dissimilar materials such as Al-Mg, Al-Cu, and Fe-Al.…”

Section: Introductionmentioning

confidence: 99%

Copper, Iron and Aluminium Electrochemical Corrosion Investigation during Electrolysis and Temperature Increasing

Yarmolenko,

Mogilei

2023

DDF

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An experimental method to calculate average charge of metal ions by electrolysis at different temperatures is proposed. Aluminium undergoes dissolution to the Al3+ ions at all temperatures. Iron undergoes dissolution to the Fe2+ or the Fe3+ ions and copper undergoes dissolution to the Cu+ or the Cu2+. It depends on temperature and electric current density. Direct electric current value and anode mass decreasing were measured during electrolysis into concentrated NaCl solution in water (5 mol/kg or 23.1%, freezing point equals -22°C, pH 6.5–7.5) at room temperature and 100°C. The average charges of copper, iron, and aluminium ions were calculated using Faraday’s law of electrolysis at electric current density 3,000 A/m2 (or 30 A/dm2): +3 for aluminium; +2 for iron; and +1 for copper at room temperature, and +3 for aluminium; +2 for iron; and +1.5 for copper at temperature 100°C. The main condition was zAl=3. We concluded that calculations of the average metal ions charges, zFe and zCu, were correct since zAl=3. The result is as follows: the Al3+, the Fe2+, and the Cu+ ions dissolve into concentrated NaCl solution in water at room temperature; the Al3+, the Fe2+, the Cu+ and the Cu2+ ions (50%/50%) dissolve into the solution at temperature 100°C. We have obtained experimentally and by mathematical modelling that aluminium anodes (cylindrical or spherical) dissolve into the solution more rapidly with temperature increasing during electrolysis accordingly to the Arrhenius law, while copper anodes (cylindrical or spherical) dissolve more slowly with temperature increasing from room temperature to temperature 180°C like “inverse Arrhenius law”. Iron electrochemical corrosion rate practically does not depend on temperature below 100°C (and, obviously, up to 180°C) like “zeroth Arrhenius law”. The spherical anode effect is greater than the cylindrical anode effect in 1.5 times.

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Section: Introductionmentioning

confidence: 99%