Microstructure Influence on the Corrosion of Permanent Mould Cast Magnesium Alloy AJ62 in Engine Coolant

2010-01-0412

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
Powertrain applications of alloy AJ62 arose from its comparative resistance to high temperature deformation among magnesium alloys. In this research, AJ62 permanent-mould cast in different section thicknesses was subjected to immersion corrosion in commercially-available engine coolant. The objective was to determine corrosion behaviour variation among casting thicknesses. Corrosion product accumulation suggests passive film formation, and unlike in other media, the film exhibits certain stability. Extreme thicknesses were used to generate polarization curves for their respective microstructures in engine coolant. Variation with casting section thickness was observed in the curves. These preliminary results indicate coarsened microstructures reduce corrosion resistance of the permanent mold cast AJ62 alloy.
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DOI
https://doi.org/10.4271/2010-01-0412
Pages
8
Citation
Burns, J., Hu, H., Nie, X., and Han, L., "Microstructure Influence on the Corrosion of Permanent Mould Cast Magnesium Alloy AJ62 in Engine Coolant," SAE Technical Paper 2010-01-0412, 2010, https://doi.org/10.4271/2010-01-0412.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-0412
Content Type
Technical Paper
Language
English