Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture

R. K. Nanstad; M. A. Sokolov; D. E. McCabe

doi:10.1520/JAI101346

Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture

R. K. Nanstad, M. A. Sokolov, D. E. McCabe

Advanced Nuclear Materials

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15 Scopus citations

Abstract

The Heavy-Section Steel Irradiation Program at Oak Ridge National Laboratory has evaluated a submerged-arc (SA) weld irradiated to a high level of embrittlement and a temper embrittled base metal that exhibits significant intergranular fracture relative to representation by the Master Curve. The temper embrittled steel revealed that the intergranular mechanism significantly extended the transition temperature range up to 150°C above T₀. For the irradiated highly embrittled SA weld study, a total of 21 1T compact specimens were tested at five different temperatures and showed the Master Curve to be non-conservative relative to the results, although that observation is uncertain due to evidence of intergranular fracture.

Original language	English
Journal	Journal of ASTM International
Volume	5
Issue number	3
DOIs	https://doi.org/10.1520/JAI101346
State	Published - Mar 2008

Keywords

Fracture toughness
Heat treatment
Intergranular fracture
Irradiation
Master curve
Reactor pressure vessel
Temper embrittlement

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10.1520/JAI101346

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title = "Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture",

abstract = "The Heavy-Section Steel Irradiation Program at Oak Ridge National Laboratory has evaluated a submerged-arc (SA) weld irradiated to a high level of embrittlement and a temper embrittled base metal that exhibits significant intergranular fracture relative to representation by the Master Curve. The temper embrittled steel revealed that the intergranular mechanism significantly extended the transition temperature range up to 150°C above T0. For the irradiated highly embrittled SA weld study, a total of 21 1T compact specimens were tested at five different temperatures and showed the Master Curve to be non-conservative relative to the results, although that observation is uncertain due to evidence of intergranular fracture.",

keywords = "Fracture toughness, Heat treatment, Intergranular fracture, Irradiation, Master curve, Reactor pressure vessel, Temper embrittlement",

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T1 - Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture

AU - Nanstad, R. K.

AU - Sokolov, M. A.

AU - McCabe, D. E.

PY - 2008/3

Y1 - 2008/3

N2 - The Heavy-Section Steel Irradiation Program at Oak Ridge National Laboratory has evaluated a submerged-arc (SA) weld irradiated to a high level of embrittlement and a temper embrittled base metal that exhibits significant intergranular fracture relative to representation by the Master Curve. The temper embrittled steel revealed that the intergranular mechanism significantly extended the transition temperature range up to 150°C above T0. For the irradiated highly embrittled SA weld study, a total of 21 1T compact specimens were tested at five different temperatures and showed the Master Curve to be non-conservative relative to the results, although that observation is uncertain due to evidence of intergranular fracture.

AB - The Heavy-Section Steel Irradiation Program at Oak Ridge National Laboratory has evaluated a submerged-arc (SA) weld irradiated to a high level of embrittlement and a temper embrittled base metal that exhibits significant intergranular fracture relative to representation by the Master Curve. The temper embrittled steel revealed that the intergranular mechanism significantly extended the transition temperature range up to 150°C above T0. For the irradiated highly embrittled SA weld study, a total of 21 1T compact specimens were tested at five different temperatures and showed the Master Curve to be non-conservative relative to the results, although that observation is uncertain due to evidence of intergranular fracture.

KW - Fracture toughness

KW - Heat treatment

KW - Intergranular fracture

KW - Irradiation

KW - Master curve

KW - Reactor pressure vessel

KW - Temper embrittlement

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DO - 10.1520/JAI101346

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VL - 5

JO - Journal of ASTM International

JF - Journal of ASTM International

IS - 3

ER -

Applicability of the fracture toughness master curve to irradiated highly embrittled steel and intergranular fracture

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Keywords

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