Evaluation of Pitting Susceptibility and Secondary Phase Formation in Newly Designed Ni-Free (Fe–16Cr–1Mo–1Si–0.2N–xMn–xCu) Duplex Stainless Steel Alloys

Farid M. Abdallah; Ihsan ul Haq Toor

doi:10.1007/s13369-019-04098-w

Evaluation of Pitting Susceptibility and Secondary Phase Formation in Newly Designed Ni-Free (Fe–16Cr–1Mo–1Si–0.2N–xMn–xCu) Duplex Stainless Steel Alloys

Farid M. Abdallah
, Ihsan ul Haq Toor^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The electrochemical properties of three Ni-free duplex stainless steel alloys, designed in-house, were investigated in chloride (0.2M NaCl) solution at room temperature. The corrosion performance was measured in terms of pitting potential (E_pit), passive current density (i_p), polarization resistance (R_p) and susceptibility to metastable pitting. The results obtained showed that alloy 2 (Fe–16Cr–5Mn–1Mo–1Si–1Cu–0.22N) exhibited the highest corrosion resistance (highest E_pit, lowest i_p, highest R_p and lowest metastable pitting susceptibility) among the designed alloys. Alloy 2 was also found to be free of any secondary phase precipitations (sigma phase, Cr nitrides, chi phase) when aged at 600–900 °C for 3–50 h owing to its optimized composition.

Original language	English
Pages (from-to)	599-608
Number of pages	10
Journal	Arabian Journal for Science and Engineering
Volume	45
Issue number	2
DOIs	https://doi.org/10.1007/s13369-019-04098-w
State	Published - 1 Feb 2020

Bibliographical note

Publisher Copyright:
© 2019, King Fahd University of Petroleum & Minerals.

Keywords

Duplex stainless steel
EIS
ENA
Fe–Cr alloys
Pitting potential
Sigma phase

ASJC Scopus subject areas

General

Access to Document

10.1007/s13369-019-04098-w

Cite this

@article{8d2e6f80653c4b91a3e88983a7a545df,

title = "Evaluation of Pitting Susceptibility and Secondary Phase Formation in Newly Designed Ni-Free (Fe–16Cr–1Mo–1Si–0.2N–xMn–xCu) Duplex Stainless Steel Alloys",

abstract = "The electrochemical properties of three Ni-free duplex stainless steel alloys, designed in-house, were investigated in chloride (0.2M NaCl) solution at room temperature. The corrosion performance was measured in terms of pitting potential (Epit), passive current density (ip), polarization resistance (Rp) and susceptibility to metastable pitting. The results obtained showed that alloy 2 (Fe–16Cr–5Mn–1Mo–1Si–1Cu–0.22N) exhibited the highest corrosion resistance (highest Epit, lowest ip, highest Rp and lowest metastable pitting susceptibility) among the designed alloys. Alloy 2 was also found to be free of any secondary phase precipitations (sigma phase, Cr nitrides, chi phase) when aged at 600–900 °C for 3–50 h owing to its optimized composition.",

keywords = "Duplex stainless steel, EIS, ENA, Fe–Cr alloys, Pitting potential, Sigma phase",

author = "Abdallah, \{Farid M.\} and Toor, \{Ihsan ul Haq\}",

note = "Publisher Copyright: {\textcopyright} 2019, King Fahd University of Petroleum \& Minerals.",

year = "2020",

month = feb,

day = "1",

doi = "10.1007/s13369-019-04098-w",

language = "English",

volume = "45",

pages = "599--608",

journal = "Arabian Journal for Science and Engineering",

issn = "2193-567X",

publisher = "Springer Nature",

number = "2",

}

TY - JOUR

T1 - Evaluation of Pitting Susceptibility and Secondary Phase Formation in Newly Designed Ni-Free (Fe–16Cr–1Mo–1Si–0.2N–xMn–xCu) Duplex Stainless Steel Alloys

AU - Abdallah, Farid M.

AU - Toor, Ihsan ul Haq

PY - 2020/2/1

Y1 - 2020/2/1

N2 - The electrochemical properties of three Ni-free duplex stainless steel alloys, designed in-house, were investigated in chloride (0.2M NaCl) solution at room temperature. The corrosion performance was measured in terms of pitting potential (Epit), passive current density (ip), polarization resistance (Rp) and susceptibility to metastable pitting. The results obtained showed that alloy 2 (Fe–16Cr–5Mn–1Mo–1Si–1Cu–0.22N) exhibited the highest corrosion resistance (highest Epit, lowest ip, highest Rp and lowest metastable pitting susceptibility) among the designed alloys. Alloy 2 was also found to be free of any secondary phase precipitations (sigma phase, Cr nitrides, chi phase) when aged at 600–900 °C for 3–50 h owing to its optimized composition.

AB - The electrochemical properties of three Ni-free duplex stainless steel alloys, designed in-house, were investigated in chloride (0.2M NaCl) solution at room temperature. The corrosion performance was measured in terms of pitting potential (Epit), passive current density (ip), polarization resistance (Rp) and susceptibility to metastable pitting. The results obtained showed that alloy 2 (Fe–16Cr–5Mn–1Mo–1Si–1Cu–0.22N) exhibited the highest corrosion resistance (highest Epit, lowest ip, highest Rp and lowest metastable pitting susceptibility) among the designed alloys. Alloy 2 was also found to be free of any secondary phase precipitations (sigma phase, Cr nitrides, chi phase) when aged at 600–900 °C for 3–50 h owing to its optimized composition.

KW - Duplex stainless steel

KW - EIS

KW - ENA

KW - Fe–Cr alloys

KW - Pitting potential

KW - Sigma phase

UR - https://www.scopus.com/pages/publications/85071273786

U2 - 10.1007/s13369-019-04098-w

DO - 10.1007/s13369-019-04098-w

M3 - Article

AN - SCOPUS:85071273786

SN - 2193-567X

VL - 45

SP - 599

EP - 608

JO - Arabian Journal for Science and Engineering

JF - Arabian Journal for Science and Engineering

IS - 2

ER -

Evaluation of Pitting Susceptibility and Secondary Phase Formation in Newly Designed Ni-Free (Fe–16Cr–1Mo–1Si–0.2N–xMn–xCu) Duplex Stainless Steel Alloys

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this