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

Z. 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

Z. Que (Corresponding Author), H. P. Seifert, P. Spätig, J. Holzer, A. Zhang, G. S. Rao, S. Ritter

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
Number of pages	17
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

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 = "Z. 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",

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pages = "191--207",

journal = "Corrosion Science",

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Environmental degradation of fracture resistance in high-temperature water environments of low-alloy reactor pressure vessel steels with high sulphur or phosphorus contents. / Que, Z. (Corresponding Author); Seifert, H. P.; Spätig, P. et al.
In: Corrosion Science, Vol. 154, 01.07.2019, p. 191-207.

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

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, Z.

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

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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

Keywords

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