Aluminium and aluminium alloys. Specifications for wrought and cast products for marine applications (shipbuilding, marine and offshore)

Aluminium alloys are known to have good cryogenic properties. However, little work is reported on aluminium alloys in the temperature range from room temperature and down to-100°C, which are likely operating temperatures in arctic regions. This work is an experimental study of the low temperature mechanical properties of an extruded AA6082 aluminium alloy in the T6 condition approved for marine applications. Quasi-static and dynamic tensile testing has been carried out at different temperatures from room temperature and down to-70°C. This decrease in temperature leads to a 10 % increase in yield strength. No significant influence of temperature was found on the area reduction to fracture. The work-hardening behaviour has been analysed for different temperatures and strain rates by fitting a generalized Voce rule to the tensile data. The initial work-hardening rate is found to depend weakly on the temperature and strain rate.

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Aluminium and aluminium alloys. Classification of Defects and Imperfections in High Pressure, Low Pressure and Gravity Die Cast Products

10.3403/30299762u ◽

2015 ◽

Keyword(s):

High Pressure ◽

Aluminium Alloys ◽

Low Pressure ◽

Die Cast ◽

Cast Products

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Aluminium and aluminium alloys. Wrought products and cast products. Special requirements for products intended for the production of pressure equipment

10.3403/30301153 ◽

2016 ◽

Keyword(s):

Aluminium Alloys ◽

Cast Products

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Corrosion of Aluminium Alloy in Seawater and Development of Green Corrosion Inhibitor for Marine Applications

Advances in Environmental Engineering and Green Technologies - Marine Technology and Sustainable Development ◽

10.4018/978-1-4666-4317-8.ch009 ◽

2013 ◽

pp. 146-156

Author(s):

Wan Mohd Norsanni Wan Nik ◽

Oladokun Sulaiman Olanrewaju ◽

F. R. Zulkifli ◽

M. F. Ahmad ◽

R. Rosliza

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Weight Loss ◽

Corrosion Inhibitor ◽

Aluminium Alloys ◽

Metal Corrosion ◽

Corrosion Rates ◽

Marine Applications ◽

Natural Corrosion ◽

Scanning Electron

Aluminium and its alloys are widely used in marine applications. Recently many studies are being carried out to use natural resources as natural corrosion inhibitors. In the present study, the aluminium alloys were tested for their corrosion performance in seawater containing a natural product as a corrosion inhibitor at room temperature. The effect of honey on the corrosion of AA6064 was researched using the weight loss, potentiodynamic polarization, and SEM methods. Electrochemical measurements and metallurgical characteristics have been made to quantify the potential of honey to be used to retard metal corrosion. Surface morphology of aluminium coupon after exposure was examined by Scanning Electron Microscopy (SEM). A good inhibition efficiency is observed which increases with an increase in inhibitor efficiency. Polarization plots indicate that honey acts as a natural corrosion inhibitor, preventing the alloys from suffering severe pitting attacks. The weight loss results show low corrosion rates for the alloy in higher honey content.

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