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J Chin Soc Corr Pro  1995, Vol. 15 Issue (3): 203-209    DOI:
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STUDY ON EXFOLIATION BEHAVIOUR OF LY12 ALUMINIUM ALLOY
Li Di;Zuo Shangzhi;Guo Baolan(Beijing University of Aeronautics and Astronautics)
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Abstract  The exfoliation behaviour of LY12 alloy in the EXCO solution was studied by metallography and electrical resistance methods.The main experimental results are as follows. During the exfoliation development,pitting occurred at first,then followed by intergranular corrosion.Exfoliation took place as a result of the combination of corrosion and tensile stress.A logarithmic relationship between corrosion depth and immersion duration was observed. However,the first and the second steps have different slopes.The peak aged LY12 alloy was found more susceptible to exfoliation than the naturally aged alloy.
Key words:  Exfoliation;Aluminium alloy; LY12     
Received:  25 June 1995     
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Li Di;Zuo Shangzhi;Guo Baolan(Beijing University of Aeronautics and Astronautics). STUDY ON EXFOLIATION BEHAVIOUR OF LY12 ALUMINIUM ALLOY. J Chin Soc Corr Pro, 1995, 15(3): 203-209.

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https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y1995/V15/I3/203

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