Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties

Matti Valo; Kim Wallin; Kari Törrönen; Ralf Ahlstrand

doi:10.1520/STP17870S

Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties

Matti Valo, Kim Wallin, Kari Törrönen, Ralf Ahlstrand

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

9 Citations (Scopus)

Abstract

The irradiation response of the extensively evaluated Japanese pressure vessel plate material, JRQ, offered by IAEA as a correlation monitor material for international use, has been measured. Charpy V-notch and precracked specimens of 3-point-bend (3-PB) geometry for J-Δa curve measurement have been irradiated in the surveillance position of the Loviisa NPP at a flux of 2×10¹¹ neutrons/(cm² ∙ s) into a fluence of 2.1×10¹⁹ neutrons/cm², E > 1 MeV, at a temperature of 265°C.

The irradiation-induced transition temperature shifts measured with Charpy V-notch and fracture mechanics specimens are correlated by using indexed temperature values.

The shapes of the brittle fracture transition curves, measured with 3-PB specimen geometry for irradiated and reference material states, are compared using a statistical brittle fracture model. Both the shape of the average curve and the scatter of the measured points are considered.

The effect of irradiation on the ductile fracture behavior based on the measured fracture resistance curves (J-Δa) is presented. The 3-PB specimen geometry is used also for measuring the fracture resistance curves.

Original language	English
Title of host publication	Effects of radiation on materials
Subtitle of host publication	15th international symposium
Editors	R. Stoller, A. Kumar, D. Gelles
Place of Publication	Philadelphia
Publisher	American Society for Testing and Materials (ASTM)
Pages	203-215
ISBN (Print)	978-0-80311477-7
DOIs	https://doi.org/10.1520/STP17870S
Publication status	Published - 1992
MoE publication type	A4 Article in a conference publication
Event	15th International Symposium on the Effects of Radiation on Materials - Nashville, United States Duration: 17 Jun 1992 → 21 Jun 1992

Publication series

Series	ASTM Special Technical Publication
Volume	1125
ISSN	0066-0558

Conference

Conference	15th International Symposium on the Effects of Radiation on Materials
Country/Territory	United States
City	Nashville
Period	17/06/92 → 21/06/92

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10.1520/STP17870S

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Valo, M., Wallin, K., Törrönen, K., & Ahlstrand, R. (1992). Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties. In R. Stoller, A. Kumar, & D. Gelles (Eds.), Effects of radiation on materials: 15th international symposium (pp. 203-215). American Society for Testing and Materials (ASTM). https://doi.org/10.1520/STP17870S

Valo, Matti ; Wallin, Kim ; Törrönen, Kari et al. / Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties. Effects of radiation on materials: 15th international symposium. editor / R. Stoller ; A. Kumar ; D. Gelles. Philadelphia : American Society for Testing and Materials (ASTM), 1992. pp. 203-215 (ASTM Special Technical Publication, Vol. 1125).

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title = "Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties",

abstract = "The irradiation response of the extensively evaluated Japanese pressure vessel plate material, JRQ, offered by IAEA as a correlation monitor material for international use, has been measured. Charpy V-notch and precracked specimens of 3-point-bend (3-PB) geometry for J-Δa curve measurement have been irradiated in the surveillance position of the Loviisa NPP at a flux of 2×1011 neutrons/(cm2 ∙ s) into a fluence of 2.1×1019 neutrons/cm2, E > 1 MeV, at a temperature of 265°C.The irradiation-induced transition temperature shifts measured with Charpy V-notch and fracture mechanics specimens are correlated by using indexed temperature values.The shapes of the brittle fracture transition curves, measured with 3-PB specimen geometry for irradiated and reference material states, are compared using a statistical brittle fracture model. Both the shape of the average curve and the scatter of the measured points are considered.The effect of irradiation on the ductile fracture behavior based on the measured fracture resistance curves (J-Δa) is presented. The 3-PB specimen geometry is used also for measuring the fracture resistance curves.",

author = "Matti Valo and Kim Wallin and Kari T{\"o}rr{\"o}nen and Ralf Ahlstrand",

year = "1992",

doi = "10.1520/STP17870S",

language = "English",

isbn = "978-0-80311477-7",

series = "ASTM Special Technical Publication",

publisher = "American Society for Testing and Materials (ASTM)",

pages = "203--215",

editor = "R. Stoller and A. Kumar and D. Gelles",

booktitle = "Effects of radiation on materials",

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note = "15th International Symposium on the Effects of Radiation on Materials ; Conference date: 17-06-1992 Through 21-06-1992",

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Valo, M, Wallin, K, Törrönen, K & Ahlstrand, R 1992, Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties. in R Stoller, A Kumar & D Gelles (eds), Effects of radiation on materials: 15th international symposium. American Society for Testing and Materials (ASTM), Philadelphia, ASTM Special Technical Publication, vol. 1125, pp. 203-215, 15th International Symposium on the Effects of Radiation on Materials, Nashville, Tennessee, United States, 17/06/92. https://doi.org/10.1520/STP17870S

Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties. / Valo, Matti; Wallin, Kim; Törrönen, Kari et al.
Effects of radiation on materials: 15th international symposium. ed. / R. Stoller; A. Kumar; D. Gelles. Philadelphia: American Society for Testing and Materials (ASTM), 1992. p. 203-215 (ASTM Special Technical Publication, Vol. 1125).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties

AU - Valo, Matti

AU - Wallin, Kim

AU - Törrönen, Kari

AU - Ahlstrand, Ralf

PY - 1992

Y1 - 1992

N2 - The irradiation response of the extensively evaluated Japanese pressure vessel plate material, JRQ, offered by IAEA as a correlation monitor material for international use, has been measured. Charpy V-notch and precracked specimens of 3-point-bend (3-PB) geometry for J-Δa curve measurement have been irradiated in the surveillance position of the Loviisa NPP at a flux of 2×1011 neutrons/(cm2 ∙ s) into a fluence of 2.1×1019 neutrons/cm2, E > 1 MeV, at a temperature of 265°C.The irradiation-induced transition temperature shifts measured with Charpy V-notch and fracture mechanics specimens are correlated by using indexed temperature values.The shapes of the brittle fracture transition curves, measured with 3-PB specimen geometry for irradiated and reference material states, are compared using a statistical brittle fracture model. Both the shape of the average curve and the scatter of the measured points are considered.The effect of irradiation on the ductile fracture behavior based on the measured fracture resistance curves (J-Δa) is presented. The 3-PB specimen geometry is used also for measuring the fracture resistance curves.

AB - The irradiation response of the extensively evaluated Japanese pressure vessel plate material, JRQ, offered by IAEA as a correlation monitor material for international use, has been measured. Charpy V-notch and precracked specimens of 3-point-bend (3-PB) geometry for J-Δa curve measurement have been irradiated in the surveillance position of the Loviisa NPP at a flux of 2×1011 neutrons/(cm2 ∙ s) into a fluence of 2.1×1019 neutrons/cm2, E > 1 MeV, at a temperature of 265°C.The irradiation-induced transition temperature shifts measured with Charpy V-notch and fracture mechanics specimens are correlated by using indexed temperature values.The shapes of the brittle fracture transition curves, measured with 3-PB specimen geometry for irradiated and reference material states, are compared using a statistical brittle fracture model. Both the shape of the average curve and the scatter of the measured points are considered.The effect of irradiation on the ductile fracture behavior based on the measured fracture resistance curves (J-Δa) is presented. The 3-PB specimen geometry is used also for measuring the fracture resistance curves.

U2 - 10.1520/STP17870S

DO - 10.1520/STP17870S

M3 - Conference article in proceedings

SN - 978-0-80311477-7

T3 - ASTM Special Technical Publication

SP - 203

EP - 215

BT - Effects of radiation on materials

A2 - Stoller, R.

A2 - Kumar, A.

A2 - Gelles, D.

PB - American Society for Testing and Materials (ASTM)

CY - Philadelphia

T2 - 15th International Symposium on the Effects of Radiation on Materials

Y2 - 17 June 1992 through 21 June 1992

ER -

Valo M, Wallin K, Törrönen K, Ahlstrand R. Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties. In Stoller R, Kumar A, Gelles D, editors, Effects of radiation on materials: 15th international symposium. Philadelphia: American Society for Testing and Materials (ASTM). 1992. p. 203-215. (ASTM Special Technical Publication, Vol. 1125). doi: 10.1520/STP17870S

Irradiation response of the new IAEA correlation monitor material JRQ measured by fracture mechanical properties

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