Austenitizing treatment influence on the electrochemical corrosion behavior of 0.3C-14Cr-3Mo martensitic stainless steel

Yoon Seok Choi; Jung Gu Kim; Yong Soo Park; Jee Yong Park

doi:10.1016/j.matlet.2006.04.041

Austenitizing treatment influence on the electrochemical corrosion behavior of 0.3C-14Cr-3Mo martensitic stainless steel

Yoon Seok Choi
, Jung Gu Kim
, Yong Soo Park
, Jee Yong Park

Department of Advanced Materials Science and Engineering

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

55 Scopus citations

Abstract

Effects of austenitizing treatment temperatures on aqueous corrosion properties of martensitic stainless steels were investigated by electrochemical tests (potentiodynamic test, potentiostatic test and electrochemical impedance spectroscopy), and surface analyses (optical microscopy and XRD). The results of potentiodynamic test revealed that the breakdown potential increased with the increased austenitizing temperature, indicating increased relative resistance to initiation of localized corrosion. EIS measurements showed that MSS3 (1030 °C) exhibits larger polarization resistance value than MSS1 (970 °C) and MSS2 (1000 °C) at passive and breakdown states. This was caused by decreasing the amount of Cr-rich M₂₃C₆ carbide which acts as preferential sites for pitting corrosion.

Original language	English
Pages (from-to)	244-247
Number of pages	4
Journal	Materials Letters
Volume	61
Issue number	1
DOIs	https://doi.org/10.1016/j.matlet.2006.04.041
State	Published - Jan 2007

Keywords

Austenitizing treatment
EIS
MC carbide
Martensitic stainless steel
Pitting corrosion

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10.1016/j.matlet.2006.04.041

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title = "Austenitizing treatment influence on the electrochemical corrosion behavior of 0.3C-14Cr-3Mo martensitic stainless steel",

abstract = "Effects of austenitizing treatment temperatures on aqueous corrosion properties of martensitic stainless steels were investigated by electrochemical tests (potentiodynamic test, potentiostatic test and electrochemical impedance spectroscopy), and surface analyses (optical microscopy and XRD). The results of potentiodynamic test revealed that the breakdown potential increased with the increased austenitizing temperature, indicating increased relative resistance to initiation of localized corrosion. EIS measurements showed that MSS3 (1030 °C) exhibits larger polarization resistance value than MSS1 (970 °C) and MSS2 (1000 °C) at passive and breakdown states. This was caused by decreasing the amount of Cr-rich M23C6 carbide which acts as preferential sites for pitting corrosion.",

keywords = "Austenitizing treatment, EIS, MC carbide, Martensitic stainless steel, Pitting corrosion",

author = "Choi, \{Yoon Seok\} and Kim, \{Jung Gu\} and Park, \{Yong Soo\} and Park, \{Jee Yong\}",

year = "2007",

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T1 - Austenitizing treatment influence on the electrochemical corrosion behavior of 0.3C-14Cr-3Mo martensitic stainless steel

AU - Choi, Yoon Seok

AU - Kim, Jung Gu

AU - Park, Yong Soo

AU - Park, Jee Yong

PY - 2007/1

Y1 - 2007/1

N2 - Effects of austenitizing treatment temperatures on aqueous corrosion properties of martensitic stainless steels were investigated by electrochemical tests (potentiodynamic test, potentiostatic test and electrochemical impedance spectroscopy), and surface analyses (optical microscopy and XRD). The results of potentiodynamic test revealed that the breakdown potential increased with the increased austenitizing temperature, indicating increased relative resistance to initiation of localized corrosion. EIS measurements showed that MSS3 (1030 °C) exhibits larger polarization resistance value than MSS1 (970 °C) and MSS2 (1000 °C) at passive and breakdown states. This was caused by decreasing the amount of Cr-rich M23C6 carbide which acts as preferential sites for pitting corrosion.

AB - Effects of austenitizing treatment temperatures on aqueous corrosion properties of martensitic stainless steels were investigated by electrochemical tests (potentiodynamic test, potentiostatic test and electrochemical impedance spectroscopy), and surface analyses (optical microscopy and XRD). The results of potentiodynamic test revealed that the breakdown potential increased with the increased austenitizing temperature, indicating increased relative resistance to initiation of localized corrosion. EIS measurements showed that MSS3 (1030 °C) exhibits larger polarization resistance value than MSS1 (970 °C) and MSS2 (1000 °C) at passive and breakdown states. This was caused by decreasing the amount of Cr-rich M23C6 carbide which acts as preferential sites for pitting corrosion.

KW - Austenitizing treatment

KW - EIS

KW - MC carbide

KW - Martensitic stainless steel

KW - Pitting corrosion

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DO - 10.1016/j.matlet.2006.04.041

M3 - Article

AN - SCOPUS:33750613791

SN - 0167-577X

VL - 61

SP - 244

EP - 247

JO - Materials Letters

JF - Materials Letters

IS - 1

ER -

Austenitizing treatment influence on the electrochemical corrosion behavior of 0.3C-14Cr-3Mo martensitic stainless steel

Abstract

Keywords

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