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Nanostructure evolu...
Nanostructure evolution and mechanical property changes during aging of a super duplex stainless steel at 300°C
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- Pettersson, N. (författare)
- RISE,KIMAB
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- Wessman, Sten (författare)
- RISE,KIMAB
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- Thuvander, Mattias, 1968 (författare)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Hedström, Peter (författare)
- KTH,Materialvetenskap,ENHETEN STRUKTURER,KTH Royal Institute of Technology, Sweden,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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- Odqvist, Joakim (författare)
- KTH,Materialvetenskap,ENHETEN STRUKTURER,KTH Royal Institute of Technology, Sweden,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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- Pettersson, R. F. A. (författare)
- The Swedish Steel Producers' Association, Sweden,Jernkontoret
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- Hertzman, S. (författare)
- Outokumpu Stainless Research Foundation, Sweden
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(creator_code:org_t)
- Elsevier, 2015
- 2015
- Engelska.
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Ingår i: Materials Science & Engineering. - : Elsevier. - 0921-5093 .- 1873-4936. ; 647, s. 241-248
- Relaterad länk:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- The nanostructure evolution and the corresponding changes in mechanical properties of a super duplex stainless steel 2507 (UNS S32750) during aging at 300. °C up to 12,000. h have been investigated. Microstructural studies using transmission electron microscopy and atom probe tomography show that subtle Cr concentration fluctuations develop during aging. The amplitude of the concentration fluctuations is proportional to the hardness of the ferrite phase, and it is also proportional to the decrease in room temperature impact toughness during aging. The fracture behaviour of the alloy changes gradually from ductile to cleavage fracture, upon aging. The cracks were found to propagate through the ferrite phase, partly along deformation twin interfaces, and delamination between the austenite and ferrite phases was observed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Atom probe tomography (APT)
- Duplex stainless steel
- Mechanical properties
- Phase separation
- Spinodal decomposition
- Transmission electron microscopy (TEM)
- Brittle fracture
- Ductile fracture
- Electron microscopy
- Failure (mechanical)
- Ferrite
- Fracture
- Fracture mechanics
- High resolution transmission electron microscopy
- Nanostructures
- Probes
- Transmission electron microscopy
- Atom-probe tomography
- Cleavage fracture
- Concentration fluctuation
- Cr concentration
- Fracture behaviour
- Room temperature
- Super duplex stainless steel
- Stainless steel
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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