Effect of Aging Temperature on Corrosion Behaviors of Maraging Stainless Steel in Seawater

Abstract:

The seawater corrosion resistance of 00Cr13Ni7Co5Mo4W maraging stainless steel by different temperature aging treatment have been studied by using potentiodynamic polarization curves and uniform corrosion immersion test, the corrosion morphology and microstructure of maraging stainless steel were analyzed by scanning electron microscopy and metallographic microscope. The results showed that 00Cr13Ni7Co5Mo4W maraging stainless steel of different aging temperature processing had occurred the obvious self-passivation, the breakdown potential of maraging stainless steel after different temperature aging treatment are E _470°C >E _490°C >E _510°C >E _450°C, and the corrosion rate relationship are R _470°C 490°C 510°C450°C .The breakdown potential and the annual average corrosion rate of 00Cr13Ni7Co5Mo4W maraging stainless steel are 300 mV and 1.2590µm/a respectively, with the best resistance to seawater corrosion.

• Periodical: Applied Mechanics and Materials (Volume 274)
• Pages: 419-422
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.274.419
• Online since: January 2013
• Authors: Ying Ying Ai, Yue Jiang, Qi Ting Wang
• Keywords: Aging, Artificial Seawater, Maraging Stainless Steel, Polarization Curve, Uniform Corrosion

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