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Perforation Corrosion at Lapped and Cold Formed Portions in Cold Rolled and Galvanized Sheet Steels
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English
Abstract
In order to prevent corrosive parts such as hood, trunklid, door and side sill in an automotive body from corrosion, a new perforation corrosion test to simulate the corrosion at lapped and cold formed portions was conducted on cold rolled, galvanized, and zinc rich primer coated steels.
Anti-perforation of galvanized steels with zinc of 95 or 128 g/m2 and galvannealed steel with zinc-iron of 59 g/m2 is remarkably improved compared to cold rolled DDQ mild steel so that they decrease the reduction in thickness to about 1/2 or 1/3. Especially galvannealed steel showed the highest protectivity.
On the other hand, effect of steel itself on perforation is also observed among three uncoated steels. The EDDQ high strength steel has excellent resistance. The reason can be attributed to low manganese content and lack of surface segregation of manganese due to short time continuous annealing.
Authors
Citation
Kobayashi, S., Irie, T., and Takahashi, H., "Perforation Corrosion at Lapped and Cold Formed Portions in Cold Rolled and Galvanized Sheet Steels," SAE Technical Paper 830492, 1983, https://doi.org/10.4271/830492.Also In
References
- Chance, R.L. “Corrosion, Deicing Salts and the Environment” Material Performance 13 16 1974
- Kalson, A.M. Jr., “Corrosive Environment Factors on Automobile Bodies” SAE, 770291
- Selley, J.S. “Protecting Vehicles against Corrosion” Corrosion Prevention and Control 8
- Hospadaruk, V. “Corrosion Fundamentals and their Application to Automobiles” CORROSION 80
- Rowe, L.C. “The Application of Corrosion Principles to Automotive Engineering Design” CORROSION 80
- Mattson, E. “Prevention of Motor Car Corrosion in Sweden” CORROSION 80
- McDonald, R.D. ”Automotive Under-Body Corrosion Testing” CORROSION 80
- Ohashi, N. Irie, T. Satoh, S. Hashimoto O. Takahashi, T. ”Development of cold rolled high strength steel sheet with excellent deep drawability” SAE paper 810027 1981
- Takahashi, H. Shirogane, Y. Matsuo, K. Adaniya T. Omura, M. “Corrosion Under paint film of Vavious Galvanized Steels” SAE paper 800145 25 29 1980