Radiation damage of reactor pressure vessel steels studied by nondestructive methods

D. G. Park; T. S. Byun; Y. Y. Song; J. H. Hong; I. S. Kim

Radiation damage of reactor pressure vessel steels studied by nondestructive methods

D. G. Park, T. S. Byun, Y. Y. Song, J. H. Hong, I. S. Kim

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

3 Scopus citations

Abstract

Effects of neutron dose on the mechanical and magnetic properties in SA508-3 nuclear pressure vessel steel using ball indentation test and magnetic Barkhausen noise (BN) measurements were studied. The samples were irradiated in a research reactor up to a dose of 10¹⁸ n/cm² (E>1 MeV) at 70°C , and 4.5 × 10¹⁹ n/cm² at 290°C. The change of mechanical properties showed a characteristic trend with neutron dose, especially near the plateau, rapid increase and slow increase. The BN profile in the specimen irradiated at 70°C decreased markedly, but that in the specimen irradiated at 290°C was hardly changed. The BN of the specimen irradiated at 70°C varied in a reverse manner against ball indentation results, a slow decrease up to a neutron dose of 10¹⁶ n/cm², followed by a rapid decrease up to a dose of 10¹⁸ n/cm². The change of mechanical properties and magnetic BN can be explained by the pinning effects of moving dislocations and domain walls from the irradiation induced defects.

Original language	English
Pages (from-to)	607-612
Number of pages	6
Journal	Key Engineering Materials
Issue number	187 PART 1
State	Published - 2000
Externally published	Yes

Keywords

Ball Indentation Test
Barkhausen Noise
Dislocation
Domain Walls
Neutron Dose
SA508-3

Cite this

@article{e03dc63633a04424a5459106ee349686,

title = "Radiation damage of reactor pressure vessel steels studied by nondestructive methods",

abstract = "Effects of neutron dose on the mechanical and magnetic properties in SA508-3 nuclear pressure vessel steel using ball indentation test and magnetic Barkhausen noise (BN) measurements were studied. The samples were irradiated in a research reactor up to a dose of 1018 n/cm2 (E>1 MeV) at 70°C , and 4.5 × 1019 n/cm2 at 290°C. The change of mechanical properties showed a characteristic trend with neutron dose, especially near the plateau, rapid increase and slow increase. The BN profile in the specimen irradiated at 70°C decreased markedly, but that in the specimen irradiated at 290°C was hardly changed. The BN of the specimen irradiated at 70°C varied in a reverse manner against ball indentation results, a slow decrease up to a neutron dose of 1016 n/cm2, followed by a rapid decrease up to a dose of 1018 n/cm2. The change of mechanical properties and magnetic BN can be explained by the pinning effects of moving dislocations and domain walls from the irradiation induced defects.",

keywords = "Ball Indentation Test, Barkhausen Noise, Dislocation, Domain Walls, Neutron Dose, SA508-3",

author = "Park, {D. G.} and Byun, {T. S.} and Song, {Y. Y.} and Hong, {J. H.} and Kim, {I. S.}",

year = "2000",

language = "English",

pages = "607--612",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications",

number = "187 PART 1",

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TY - JOUR

T1 - Radiation damage of reactor pressure vessel steels studied by nondestructive methods

AU - Park, D. G.

AU - Byun, T. S.

AU - Song, Y. Y.

AU - Hong, J. H.

AU - Kim, I. S.

PY - 2000

Y1 - 2000

N2 - Effects of neutron dose on the mechanical and magnetic properties in SA508-3 nuclear pressure vessel steel using ball indentation test and magnetic Barkhausen noise (BN) measurements were studied. The samples were irradiated in a research reactor up to a dose of 1018 n/cm2 (E>1 MeV) at 70°C , and 4.5 × 1019 n/cm2 at 290°C. The change of mechanical properties showed a characteristic trend with neutron dose, especially near the plateau, rapid increase and slow increase. The BN profile in the specimen irradiated at 70°C decreased markedly, but that in the specimen irradiated at 290°C was hardly changed. The BN of the specimen irradiated at 70°C varied in a reverse manner against ball indentation results, a slow decrease up to a neutron dose of 1016 n/cm2, followed by a rapid decrease up to a dose of 1018 n/cm2. The change of mechanical properties and magnetic BN can be explained by the pinning effects of moving dislocations and domain walls from the irradiation induced defects.

AB - Effects of neutron dose on the mechanical and magnetic properties in SA508-3 nuclear pressure vessel steel using ball indentation test and magnetic Barkhausen noise (BN) measurements were studied. The samples were irradiated in a research reactor up to a dose of 1018 n/cm2 (E>1 MeV) at 70°C , and 4.5 × 1019 n/cm2 at 290°C. The change of mechanical properties showed a characteristic trend with neutron dose, especially near the plateau, rapid increase and slow increase. The BN profile in the specimen irradiated at 70°C decreased markedly, but that in the specimen irradiated at 290°C was hardly changed. The BN of the specimen irradiated at 70°C varied in a reverse manner against ball indentation results, a slow decrease up to a neutron dose of 1016 n/cm2, followed by a rapid decrease up to a dose of 1018 n/cm2. The change of mechanical properties and magnetic BN can be explained by the pinning effects of moving dislocations and domain walls from the irradiation induced defects.

KW - Ball Indentation Test

KW - Barkhausen Noise

KW - Dislocation

KW - Domain Walls

KW - Neutron Dose

KW - SA508-3

UR - http://www.scopus.com/inward/record.url?scp=20644470733&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:20644470733

SN - 1013-9826

SP - 607

EP - 612

JO - Key Engineering Materials

JF - Key Engineering Materials

IS - 187 PART 1

ER -

Radiation damage of reactor pressure vessel steels studied by nondestructive methods

Abstract

Keywords

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