Corrosion Behavior of High-Strength Bainitic Rail Steels

Corrosion Behavior of High-Strength Bainitic Rail Steels

The present work discusses corrosion behavior of newly developed bainitic steels made by isothermal heat treatment of a new steel composition (0.71 pct C, 1.15 pct Mn, 0.20 pct Ni, 0.59 pct Cr, 0.40 pct Cu, 0.35 pct Si, 0.026 pct S, 0.027 pct P, and rest Fe (weight percent)). Corrosion behavior of t...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2015-04, Vol.46 (4), p.1500-1518
Hauptverfasser: Moon, A. P., Sangal, S., Layek, S., Giribaskar, S., Mondal, Kallol
Format: Artikel
Sprache:eng
Schlagworte:
Bainitic steel
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Corrosion
Fog
High speed rail
Materials Science
Metallic Materials
Metallurgy
Nanotechnology
Physical metallurgy
Rusting
Steel
Structural Materials
Structural steels
Surfaces and Interfaces
Thin Films
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Zusammenfassung:The present work discusses corrosion behavior of newly developed bainitic steels made by isothermal heat treatment of a new steel composition (0.71 pct C, 1.15 pct Mn, 0.20 pct Ni, 0.59 pct Cr, 0.40 pct Cu, 0.35 pct Si, 0.026 pct S, 0.027 pct P, and rest Fe (weight percent)). Corrosion behavior of the pearlitic steel made by normalization is also studied. Electrochemical polarization and salt fog tests are carried out in 0.6 M NaCl. Steel rusts after salt fog tests are analyzed. Modified composition, finer microstructures, and compact rust morphology attribute to better corrosion resistance of the bainitic steels. Corrosion mechanisms for the pearlitic and bainitic steels are discussed.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-014-2732-0