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Cast Magnesium Subframe Development-Corrosion Mitigation Strategy and Testing
Technical Paper
2021-01-0279
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE WCX Digital Summit
Language:
English
Abstract
A cast magnesium AE44 subframe was designed and manufactured for a C Class sedan to reduce weight and improve vehicle fuel economy. Corrosion mitigation strategies were developed to reduce the likelihood of galvanic corrosion. Both a proving ground vehicle corrosion test and a laboratory component corrosion test were conducted. The vehicle test result demonstrated that the corrosion mitigation strategies were effective. They also provided lessons learned on clearance between magnesium and steel components and options to improve the subframe’s corrosion resistance. The magnesium subframe achieved 5 kg (32%) weight reduction from the equivalent steel subframe and met all the required structural performance targets.
Authors
Citation
Chen, X., Wagner, D., Wedepohl, A., Redlin, K. et al., "Cast Magnesium Subframe Development-Corrosion Mitigation Strategy and Testing," SAE Technical Paper 2021-01-0279, 2021, https://doi.org/10.4271/2021-01-0279.Data Sets - Support Documents
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References
- http://www.preservationscience.com/materials/metals/PGC.html
- http://curtismetal.com/ProcessCapabilities.html
- May 2016