Electrochemical Corrosion Behavior of AZ80 Magnesium Alloy Tube Fabricated by Hydrostatic Extrusion


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The corrosion behavior of hydrostatic extruded tube AZ80 magnesium alloy was investigated by polarization curves and electrochemical impedance spectroscopy (EIS) in simulated atmosphere. The results indicated that, the corrosion resistance of the hydrostatic extruded AZ80 magnesium alloy with uneven deformed grains and increased sub-grains were obviously weakened, with larger corrosion current density in the polarization curves and lower corrosion resistances in the electrochemical impedance spectroscopy plots. This was mainly because of the hydrostatic extrusion which made AZ80 magnesium alloy within large numbers of dislocation tangles. So the residual stress increased the electrochemical activity of magnesium alloy which reduced the corrosion resistance of magnesium alloys.



Edited by:

Li Qiang




Z. L. Wu et al., "Electrochemical Corrosion Behavior of AZ80 Magnesium Alloy Tube Fabricated by Hydrostatic Extrusion", Applied Mechanics and Materials, Vol. 624, pp. 77-81, 2014

Online since:

August 2014




* - Corresponding Author

[1] WU Ruizhi, ZHANG Jinghuai, YI Dongsong. Advanced magnesium alloy preparation and processing technology [M]. Beijing: Science press (2012).

[2] CLOW B B. Magnesium industry overview [J]. Advanced Materials Process, 1996, 150 (4): 33-34.

[3] YU Kun, Li Wenxian, WANG Richu. The research, development and application of magnesium alloy [J]. The Chinese Journal of Nonferrous Metals, 2003, 13 (2): 277-288.

[4] SONG G. Corrosion and protection of magnesium alloys [M]. Beijing: Chemical Industry Press (2006).

[5] AVEDESIAN M M, BAKER H. ASM speciality handbook: magnesium and magnesium Alloys [M]. Ohio: ASM international, 1999: 38-40.

[6] WANG Fuzhi, ZHANG Zhaohui. The technology of hydrostatic extrusion. Beijing: National Defense Industry Press (2008).

[7] Гутман, З.М. Metal mechanical chemical and corrosion protection [M]. Beijing: Science press, 1989, 48-75.