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Brittle fracture in...
Brittle fracture initiation in decommissioned boiling water reactor pressure vessel head weld
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- Que, Zaiqing (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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- Lindroos, Matti (författare)
- VTT Tech Res Ctr Finland, Integrated Computat Mat Engn, Tampere 33720, Finland.
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- Lydman, Jari (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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- Hytonen, Noora (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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- Lindqvist, Sebastian (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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- Efsing, Pål, 1965- (författare)
- KTH,Hållfasthetslära
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- Nevasmaa, Pekka (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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- Arffman, Pentti (författare)
- VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland.
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VTT Tech Res Ctr Finland, Nucl Reactor Mat, Espoo 02044, Finland VTT Tech Res Ctr Finland, Integrated Computat Mat Engn, Tampere 33720, Finland. (creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 569
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The brittle fracture initiation behavior and fracture toughness in the ductile-to-brittle transition region for a thermally-aged weld metal of a decommissioned reactor pressure vessel head (in operation at 288 degrees C for 23 effective full power years) and in the non-aged reference condition were investigated. The results show that brittle fracture initiated primarily from non-metallic inclusions. The correlation between frac-ture toughness and brittle fracture initiation type (inclusion debonding or breakage), initiator size, initi-ation location (as-welded or re-heated regions in the weld metal) were analysed. Despite that thermal ageing does not affect significantly the fracture toughness, it could promote the debonding as a brit-tle fracture primary initiation type. The influence of debonded inclusion on the evolution of cumulative damage and brittle fracture initiation was assessed using crystal plasticity modelling.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Brittle fracture
- Initiation
- Reactor pressure vessel
- Weld metal
- Inclusion
- Toughness
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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