Effect of microstructure on corrosion behavior of medium manganese steel

Kishore, Kaushal and Chandan, A K and Purty, M and Karthik, V and Mishra, G and Sahoo, Biraj K and Meena, L K and Chakraborty, J (2023) Effect of microstructure on corrosion behavior of medium manganese steel. Materials Letters, 330 .

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In this work, the corrosion behavior of medium-manganese steel (MMS), with lamellar and globular microstructure having comparable austenite and ferrite fractions is studied using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. It was observed that lamellar morphology had superior corrosion resistance depicted by similar to 44 % lower corrosion current and a greater charge transfer resistance. The superior corrosion resistance of lamellar morphology was attributed to a relatively favorable crystallographic texture and a higher fraction of low energy low angle grain boundaries compared to globular morphology MMS. This work sheds important insights into controlling corrosion resistance of third-generation advanced high-strength MMS through microstructural design.

Item Type:Article
Official URL/DOI:https://10.1016/j.matlet.2022.133344
Uncontrolled Keywords:Corrosion, microstructure, grain boundaries, texture
Divisions:Material Science and Technology
ID Code:9359
Deposited By:Dr Mita Tarafder
Deposited On:08 Feb 2023 10:45
Last Modified:08 Feb 2023 10:45
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