Abstract
In the present study, the corrosion behavior and microstructure changes of copper sheets joined with martensitic stainless steel AISI 410 in the salt environment after the explosive welding process have been investigated. An explosive loading and explosive material thickness were considered as variables. In the investigation, potentiodynamic polarization tests, electrochemical impedance spectroscopy, and metallographic tests were used through optical microscopy and scanning electron microscopy. The results of dynamic potential polarization curves showed that the corrosion density decreased with increasing the explosive load and decreasing the concentration at the interface. The results of metallography indicate a wave-eddy of the interface due to an increase in the thickness of the explosive load. According to the polarization test, the corrosion density increased with increasing the stand-off distance and the explosive load; an increase in the energy of the interface resulted from increasing the stand-off distance and the explosive loading, which exacerbates corrosion.
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Najafi, S., Khanzadeh, M.R., Bakhtiari, H. et al. Electrochemical Investigation of Dissimilar Joint of Pure Cu to AISI 410 Martensitic Stainless Steel Fabricated by Explosive Welding. Surf. Engin. Appl.Electrochem. 56, 675–683 (2020). https://doi.org/10.3103/S1068375520060113
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DOI: https://doi.org/10.3103/S1068375520060113