Corrosion study on low alloy high phosphorus steel

Authors

  • B K Jena DBRAIT, Port Blair, A&N Island
  • N Gupta National Institute of Foundry & Forge Technology, Hatia, Ranchi-834003
  • B Singh R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002, India,
  • G Sahoo R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002

Abstract

The effect of P on corrosion behaviour of low alloy steels exposed for one month cyclic wet/dry salt spray was investigated and compared with low carbon steel. Electrochemical Impedance Spectroscopy (EIS) results revealed that the rust resistance (Rrust) increased with the number of salt spray test cycles. The higher phosphorus content steel (G12) exhibited higher rust resistance (Rrust) than that of low phosphorus content steels (SCR & G11), while similar corrosion rate was noticed from the Tafel extrapolation study in 3.5% NaCl solution for all the test samples. All steels revealed ferrite pearlite microstructure. The larger ferrite grain of G12 steel containing highest phosphorus content (0.42 wt. % P) is attributed to the effect of phosphorus.

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Author Biographies

B K Jena, DBRAIT, Port Blair, A&N Island

Mechanical Engineering Deptt.

N Gupta, National Institute of Foundry & Forge Technology, Hatia, Ranchi-834003

Head, Deptt. of Foundry Technology

B Singh, R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002, India,

DGM & Head, Physical Metallurgy

G Sahoo, R & D Centre for Iron and Steel, SAIL, Doranda, Ranchi-834002

Deputy Manager, Physical Metallurgy Group

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Published

2014-03-12

How to Cite

[1]
B. K. Jena, N. Gupta, B. Singh, and G. Sahoo, “Corrosion study on low alloy high phosphorus steel”, J. Met. Mater. Miner., vol. 24, no. 1, Mar. 2014.

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Section

Original Research Articles