Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel

Krishnan Hariramabadran Anantha; Cem Örnek; Sebastian Ejnermark; Anders Thuvander; Anna Medvedeva; Johnny Sjöström; Jinshan Pan

doi:10.1016/j.corsci.2018.12.010

Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel

Krishnan Hariramabadran Anantha
, Cem Örnek
, Sebastian Ejnermark
, Anders Thuvander
, Anna Medvedeva
, Johnny Sjöström
, Jinshan Pan^*

^*Corresponding author for this work

KTH Royal Institute of Technology
Uddeholms AB

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

17 Citations (Scopus)

Abstract

The resistance to environment-assisted cracking (EAC) of AISI 420 martensitic stainless steel (MSS) was investigated in 0.3 M NaCl solution (room temperature) at constant loads for 30 days. The steel tempered at 250 °C was superior to the 500 °C-temper, which showed corrosion pits favouring cracking. The fracture surface showed faceted grains, cleavage, striations, and inter- and transgranular cracks, suggesting a mixed stress corrosion cracking (SCC) and hydrogen embrittlement (HE) mechanism as the cause for EAC. Finite element modelling (FEM) indicated strain/stress localization at the mouth of deep pits and at the wall of shallow pits, displaying the favoured locations for pit-to-crack transition.

Original language	English
Pages (from-to)	83-93
Number of pages	11
Journal	Corrosion Science
Volume	148
DOIs	https://doi.org/10.1016/j.corsci.2018.12.010
Publication status	Published - Mar 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Environment-assisted cracking
Martensitic stainless steel
Pit-to-crack transition
Residual stress
Tempering

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10.1016/j.corsci.2018.12.010

Cite this

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title = "Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel",

abstract = "The resistance to environment-assisted cracking (EAC) of AISI 420 martensitic stainless steel (MSS) was investigated in 0.3 M NaCl solution (room temperature) at constant loads for 30 days. The steel tempered at 250 °C was superior to the 500 °C-temper, which showed corrosion pits favouring cracking. The fracture surface showed faceted grains, cleavage, striations, and inter- and transgranular cracks, suggesting a mixed stress corrosion cracking (SCC) and hydrogen embrittlement (HE) mechanism as the cause for EAC. Finite element modelling (FEM) indicated strain/stress localization at the mouth of deep pits and at the wall of shallow pits, displaying the favoured locations for pit-to-crack transition.",

keywords = "Environment-assisted cracking, Martensitic stainless steel, Pit-to-crack transition, Residual stress, Tempering",

author = "\{Hariramabadran Anantha\}, Krishnan and Cem {\"O}rnek and Sebastian Ejnermark and Anders Thuvander and Anna Medvedeva and Johnny Sj{\"o}str{\"o}m and Jinshan Pan",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = mar,

doi = "10.1016/j.corsci.2018.12.010",

language = "English",

volume = "148",

pages = "83--93",

journal = "Corrosion Science",

issn = "0010-938X",

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T1 - Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel

AU - Hariramabadran Anantha, Krishnan

AU - Örnek, Cem

AU - Ejnermark, Sebastian

AU - Thuvander, Anders

AU - Medvedeva, Anna

AU - Sjöström, Johnny

AU - Pan, Jinshan

PY - 2019/3

Y1 - 2019/3

N2 - The resistance to environment-assisted cracking (EAC) of AISI 420 martensitic stainless steel (MSS) was investigated in 0.3 M NaCl solution (room temperature) at constant loads for 30 days. The steel tempered at 250 °C was superior to the 500 °C-temper, which showed corrosion pits favouring cracking. The fracture surface showed faceted grains, cleavage, striations, and inter- and transgranular cracks, suggesting a mixed stress corrosion cracking (SCC) and hydrogen embrittlement (HE) mechanism as the cause for EAC. Finite element modelling (FEM) indicated strain/stress localization at the mouth of deep pits and at the wall of shallow pits, displaying the favoured locations for pit-to-crack transition.

AB - The resistance to environment-assisted cracking (EAC) of AISI 420 martensitic stainless steel (MSS) was investigated in 0.3 M NaCl solution (room temperature) at constant loads for 30 days. The steel tempered at 250 °C was superior to the 500 °C-temper, which showed corrosion pits favouring cracking. The fracture surface showed faceted grains, cleavage, striations, and inter- and transgranular cracks, suggesting a mixed stress corrosion cracking (SCC) and hydrogen embrittlement (HE) mechanism as the cause for EAC. Finite element modelling (FEM) indicated strain/stress localization at the mouth of deep pits and at the wall of shallow pits, displaying the favoured locations for pit-to-crack transition.

KW - Environment-assisted cracking

KW - Martensitic stainless steel

KW - Pit-to-crack transition

KW - Residual stress

KW - Tempering

UR - https://www.scopus.com/pages/publications/85058373436

U2 - 10.1016/j.corsci.2018.12.010

DO - 10.1016/j.corsci.2018.12.010

M3 - Article

AN - SCOPUS:85058373436

SN - 0010-938X

VL - 148

SP - 83

EP - 93

JO - Corrosion Science

JF - Corrosion Science

ER -

Experimental and modelling study of the effect of tempering on the susceptibility to environment-assisted cracking of AISI 420 martensitic stainless steel

Abstract

Bibliographical note

Keywords

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