Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents

Zaiqing Que; H. P. Seifert; P. Spätig; J. Holzer; A. Zhang; G. S. Rao; S. Ritter

doi:10.1016/j.corsci.2019.04.011

Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents

Zaiqing Que^*
, H. P. Seifert
, P. Spätig
, J. Holzer
, A. Zhang
, G. S. Rao
, S. Ritter

^*Corresponding author for this work

Not published at VTT

Paul Scherrer Institute (PSI)

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

12 Citations (Scopus)

Abstract

The fracture behaviour of low-alloy reactor pressure vessel steels with various sulphur and phosphorus contents, different environmentally-assisted cracking (EAC)and temper embrittlement (TE)susceptibilities was evaluated by elastic plastic fracture mechanics tests in air and various simulated light water reactors environments. A moderate but clear reduction of fracture initiation resistance occurred in a)high-sulphur steel with high EAC susceptibility in oxygenated high-temperature water with aggressive occluded crevice environment and preceding EAC growth, and in b)high-phosphorus steel with high TE susceptibility, where the reduction of fracture resistance was most pronounced in hydrogenated high-temperature water.

Original language	English
Pages (from-to)	191-207
Journal	Corrosion Science
Volume	154
DOIs	https://doi.org/10.1016/j.corsci.2019.04.011
Publication status	Published - 1 Jul 2019
MoE publication type	A1 Journal article-refereed

Funding

Funding for the “SAFE-II” and “LEAD” projects from the Swiss Federal Nuclear Safety Inspectorate (ENSI) is gratefully acknowledged.

Keywords

Environmentally-assisted cracking
Fracture resistance
Hydrogen embrittlement
Low alloy steel
Temper embrittlement

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10.1016/j.corsci.2019.04.011

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title = "Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents",

abstract = "The fracture behaviour of low-alloy reactor pressure vessel steels with various sulphur and phosphorus contents, different environmentally-assisted cracking (EAC)and temper embrittlement (TE)susceptibilities was evaluated by elastic plastic fracture mechanics tests in air and various simulated light water reactors environments. A moderate but clear reduction of fracture initiation resistance occurred in a)high-sulphur steel with high EAC susceptibility in oxygenated high-temperature water with aggressive occluded crevice environment and preceding EAC growth, and in b)high-phosphorus steel with high TE susceptibility, where the reduction of fracture resistance was most pronounced in hydrogenated high-temperature water.",

keywords = "Environmentally-assisted cracking, Fracture resistance, Hydrogen embrittlement, Low alloy steel, Temper embrittlement",

author = "Zaiqing Que and Seifert, \{H. P.\} and P. Sp{\"a}tig and J. Holzer and A. Zhang and Rao, \{G. S.\} and S. Ritter",

year = "2019",

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doi = "10.1016/j.corsci.2019.04.011",

language = "English",

volume = "154",

pages = "191--207",

journal = "Corrosion Science",

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TY - JOUR

T1 - Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents

AU - Que, Zaiqing

AU - Seifert, H. P.

AU - Spätig, P.

AU - Holzer, J.

AU - Zhang, A.

AU - Rao, G. S.

AU - Ritter, S.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - The fracture behaviour of low-alloy reactor pressure vessel steels with various sulphur and phosphorus contents, different environmentally-assisted cracking (EAC)and temper embrittlement (TE)susceptibilities was evaluated by elastic plastic fracture mechanics tests in air and various simulated light water reactors environments. A moderate but clear reduction of fracture initiation resistance occurred in a)high-sulphur steel with high EAC susceptibility in oxygenated high-temperature water with aggressive occluded crevice environment and preceding EAC growth, and in b)high-phosphorus steel with high TE susceptibility, where the reduction of fracture resistance was most pronounced in hydrogenated high-temperature water.

AB - The fracture behaviour of low-alloy reactor pressure vessel steels with various sulphur and phosphorus contents, different environmentally-assisted cracking (EAC)and temper embrittlement (TE)susceptibilities was evaluated by elastic plastic fracture mechanics tests in air and various simulated light water reactors environments. A moderate but clear reduction of fracture initiation resistance occurred in a)high-sulphur steel with high EAC susceptibility in oxygenated high-temperature water with aggressive occluded crevice environment and preceding EAC growth, and in b)high-phosphorus steel with high TE susceptibility, where the reduction of fracture resistance was most pronounced in hydrogenated high-temperature water.

KW - Environmentally-assisted cracking

KW - Fracture resistance

KW - Hydrogen embrittlement

KW - Low alloy steel

KW - Temper embrittlement

UR - https://www.scopus.com/pages/publications/85063074187

U2 - 10.1016/j.corsci.2019.04.011

DO - 10.1016/j.corsci.2019.04.011

M3 - Article

AN - SCOPUS:85063074187

SN - 0010-938X

VL - 154

SP - 191

EP - 207

JO - Corrosion Science

JF - Corrosion Science

ER -

Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents

Abstract

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Keywords

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