Crack Resistance Behavior of ODS and Standard 9%Cr–containing Steels at High Temperature

Rachid Chaouadi; Gunter Coen; Enrico Lucon; Vincent Massaut

doi:10.1016/j.jnucmat.2010.05.021

Crack Resistance Behavior of ODS and Standard 9%Cr–containing Steels at High Temperature

Rachid Chaouadi, Gunter Coen, Enrico Lucon, Vincent Massaut

Research output › peer-review

Abstract

9%Cr–Oxide Dispersion Strengthened (ODS) steels are under intense research in the EU and other countries to extend the operation temperature range of ferritic alloys towards 600–650°C. Unfortunately, fracture toughness behavior in this high temperature range is missing. Therefore, the main objective of this work is to evaluate the crack resistance behavior of a 9%Cr ODS steel in the range of 300–650 °C and comparison to the standard non ODS Eurofer-97 steel. Test results on the ODS steel show a drastic decrease of both initiation toughness and tearing resistance with increasing test temperature. In particular, above 550°C, the crack resistance curve (J–R curve) of ODS Eurofer is extremely low while the standard Eurofer–97 exhibit a much higher crack resistance curve.

Original language	English
Pages (from-to)	15-18
Journal	Journal of Nuclear Materials
Volume	403
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2010.05.021
State	Published - 15 Jul 2010

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Cite this

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title = "Crack Resistance Behavior of ODS and Standard 9%Cr–containing Steels at High Temperature",

abstract = "9%Cr–Oxide Dispersion Strengthened (ODS) steels are under intense research in the EU and other countries to extend the operation temperature range of ferritic alloys towards 600–650°C. Unfortunately, fracture toughness behavior in this high temperature range is missing. Therefore, the main objective of this work is to evaluate the crack resistance behavior of a 9%Cr ODS steel in the range of 300–650 °C and comparison to the standard non ODS Eurofer-97 steel. Test results on the ODS steel show a drastic decrease of both initiation toughness and tearing resistance with increasing test temperature. In particular, above 550°C, the crack resistance curve (J–R curve) of ODS Eurofer is extremely low while the standard Eurofer–97 exhibit a much higher crack resistance curve.",

keywords = "ODS, Eurofer, J-R curve, high temperature, initiation toughness, tearing resistance",

author = "Rachid Chaouadi and Gunter Coen and Enrico Lucon and Vincent Massaut",

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T1 - Crack Resistance Behavior of ODS and Standard 9%Cr–containing Steels at High Temperature

AU - Chaouadi, Rachid

AU - Coen, Gunter

AU - Lucon, Enrico

AU - Massaut, Vincent

N1 - Score = 10

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Y1 - 2010/7/15

N2 - 9%Cr–Oxide Dispersion Strengthened (ODS) steels are under intense research in the EU and other countries to extend the operation temperature range of ferritic alloys towards 600–650°C. Unfortunately, fracture toughness behavior in this high temperature range is missing. Therefore, the main objective of this work is to evaluate the crack resistance behavior of a 9%Cr ODS steel in the range of 300–650 °C and comparison to the standard non ODS Eurofer-97 steel. Test results on the ODS steel show a drastic decrease of both initiation toughness and tearing resistance with increasing test temperature. In particular, above 550°C, the crack resistance curve (J–R curve) of ODS Eurofer is extremely low while the standard Eurofer–97 exhibit a much higher crack resistance curve.

AB - 9%Cr–Oxide Dispersion Strengthened (ODS) steels are under intense research in the EU and other countries to extend the operation temperature range of ferritic alloys towards 600–650°C. Unfortunately, fracture toughness behavior in this high temperature range is missing. Therefore, the main objective of this work is to evaluate the crack resistance behavior of a 9%Cr ODS steel in the range of 300–650 °C and comparison to the standard non ODS Eurofer-97 steel. Test results on the ODS steel show a drastic decrease of both initiation toughness and tearing resistance with increasing test temperature. In particular, above 550°C, the crack resistance curve (J–R curve) of ODS Eurofer is extremely low while the standard Eurofer–97 exhibit a much higher crack resistance curve.

KW - ODS

KW - Eurofer

KW - J-R curve

KW - high temperature

KW - initiation toughness

KW - tearing resistance

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