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

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (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 languageEnglish
Pages (from-to)191-207
Number of pages17
JournalCorrosion Science
Volume154
DOIs
Publication statusPublished - 1 Jul 2019
MoE publication typeNot Eligible

Fingerprint

Steel
Embrittlement
Steel structures
Weathering
Sulfur
Phosphorus
Fracture toughness
Light water reactors
Water
Fracture mechanics
Plastics
Temperature
Air

Keywords

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

Cite this

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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",
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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.; Holzer, J.; Zhang, A.; Rao, G. S.; Ritter, S.

In: Corrosion Science, Vol. 154, 01.07.2019, p. 191-207.

Research output: Contribution to journalArticleScientificpeer-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.

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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

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KW - Temper embrittlement

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