Corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments

J. R. J. Michla; R.  Nagarajan; S. O. Ismail; T.  Ramprabhu; S. Siengchin; M. P. I. Devi; F. Mohammad

doi:10.1007/s12666-023-02884-7

Corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments

J. R. J. Michla, R. Nagarajan, S. O. Ismail, T. Ramprabhu, S. Siengchin, M. P. I. Devi, F. Mohammad

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Abstract

In this research work, the corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments were experimentally investigated. The influence of nitriding on corrosion resistance of 3.5 wt.% of sodium chloride (NaCl) and 0.5 M of sodium sulphate (Na ₂SO ₄) environments was investigated. Results exhibit that the as-built specimens affected more on corrosion in form of pits in both environments. The nitrided 17-4 PH at 580 °C produced the best/optimum corrosion resistance property in both environmental conditions. The improved corrosion resistance was obtained due to the presence of homogenous distribution of chromium and iron in the form of nitrides (CrN and Fe _3-4N) on the surface along with other compounds.

Original language	English
Pages (from-to)	1863-1873
Number of pages	11
Journal	Transactions of the Indian Institute of Metals
Volume	76
Issue number	7
Early online date	3 Mar 2023
DOIs	https://doi.org/10.1007/s12666-023-02884-7
Publication status	Published - 30 Jul 2023

Keywords

Additive manufacturing
Corrosion behaviour
Nitrided 17-4 PH steel
Potentiodynamic polarisation

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title = "Corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments",

abstract = "In this research work, the corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments were experimentally investigated. The influence of nitriding on corrosion resistance of 3.5 wt.% of sodium chloride (NaCl) and 0.5 M of sodium sulphate (Na 2SO 4) environments was investigated. Results exhibit that the as-built specimens affected more on corrosion in form of pits in both environments. The nitrided 17-4 PH at 580 °C produced the best/optimum corrosion resistance property in both environmental conditions. The improved corrosion resistance was obtained due to the presence of homogenous distribution of chromium and iron in the form of nitrides (CrN and Fe 3-4N) on the surface along with other compounds.",

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AU - Michla, J. R. J.

AU - Nagarajan, R.

AU - Ismail, S. O.

AU - Ramprabhu, T.

AU - Siengchin, S.

AU - Devi, M. P. I.

AU - Mohammad , F.

N1 - © The Indian Institute of Metals - IIM 2023. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1007/s12666-023-02884-7

PY - 2023/7/30

Y1 - 2023/7/30

N2 - In this research work, the corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments were experimentally investigated. The influence of nitriding on corrosion resistance of 3.5 wt.% of sodium chloride (NaCl) and 0.5 M of sodium sulphate (Na 2SO 4) environments was investigated. Results exhibit that the as-built specimens affected more on corrosion in form of pits in both environments. The nitrided 17-4 PH at 580 °C produced the best/optimum corrosion resistance property in both environmental conditions. The improved corrosion resistance was obtained due to the presence of homogenous distribution of chromium and iron in the form of nitrides (CrN and Fe 3-4N) on the surface along with other compounds.

AB - In this research work, the corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments were experimentally investigated. The influence of nitriding on corrosion resistance of 3.5 wt.% of sodium chloride (NaCl) and 0.5 M of sodium sulphate (Na 2SO 4) environments was investigated. Results exhibit that the as-built specimens affected more on corrosion in form of pits in both environments. The nitrided 17-4 PH at 580 °C produced the best/optimum corrosion resistance property in both environmental conditions. The improved corrosion resistance was obtained due to the presence of homogenous distribution of chromium and iron in the form of nitrides (CrN and Fe 3-4N) on the surface along with other compounds.

KW - Additive manufacturing

KW - Corrosion behaviour

KW - Nitrided 17-4 PH steel

KW - Potentiodynamic polarisation

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JO - Transactions of the Indian Institute of Metals

JF - Transactions of the Indian Institute of Metals

IS - 7

ER -

Corrosion behaviours of additively manufactured nitrided 17-4 PH steels in different environments

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