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Analysis of thermal...
Analysis of thermal embrittlement of a low alloy steel weldment using fracture toughness and microstructural investigations
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- Boåsen, Magnus (författare)
- KTH,Hållfasthetslära
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- Lindgren, Kristina (författare)
- Chalmers, Microstructure Physics, Department of Physics
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- Öberg, Martin (författare)
- KTH,Hållfasthetslära
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visa fler...
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- Thuvander, Mattias (författare)
- Chalmers, Microstructure Physics, Department of Physics
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- Faleskog, Jonas (författare)
- KTH,Hållfasthetslära
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- Efsing, Pål, 1965- (författare)
- KTH,Hållfasthetslära
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visa färre...
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(creator_code:org_t)
- 2020
- Engelska 34 s.
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Serie: TRITA-SCI-RAP ; 2020:004
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- A thermally aged low alloy steel is investigated in terms of its fracture toughness and microstructural evolution and compared to a reference. The main purpose of the study is to investigate the effects of thermal embrittlement on the brittle fracture toughness, and its effects on the influence of loss of crack tip constraint. Ageing appears to enable brittle fracture initiation from grain boundaries besides initiation from second phase particles, making the fracture toughness distribution bimodal as a result. The consequence is that the constraint effect is significantly reduced when grain boundary initiation dominates the toughness distribution, as compared to the reference material where the constraint effect is significant. The microstructure is investigated at the nano scale using atom probe tomography where nanometer sized Cu-rich clusters are found primarily situated on dislocation lines.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Engineering Mechanics
- Teknisk mekanik
- Hållfasthetslära
- Solid Mechanics
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)