Degradation of Mod.9Cr-1Mo Steel during Long-term Creep Deformation
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This article is published in Tetsu To Hagane-journal of The Iron and Steel Institute of Japan.The article was published on 1999-11-01 and is currently open access. It has received 98 citations till now. The article focuses on the topics: Creep.read more
Citations
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Precipitate design for creep strengthening of 9% Cr tempered martensitic steel for ultra-supercritical power plants
TL;DR: The suppression of particle coarsening during creep and the maintenance of a homogeneous distribution of M23C6 carbides near prior austenite grain boundaries are effective for preventing the long-term degradation of creep strength and for improving long- term creep strength by the addition of boron.
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Evolution of dislocation density, size of subgrains and MX-type precipitates in a P91 steel during creep and during thermal ageing at 600 °C for more than 100,000 h
Clara Panait,Clara Panait,Anna Zielińska-Lipiec,Tomasz Kozieł,Aleksandra Czyrska-Filemonowicz,Anne-Françoise Gourgues-Lorenzon,Walter Bendick +6 more
TL;DR: In this article, the authors present results of the quantitative measurement of the size of MX precipitates, subgrain size and dislocation density in a P91 steel that had been creep tested for 113,431 h at 600 ◦ C.
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Creep damage evaluation of 9Cr–1Mo–V–Nb steel welded joints showing Type IV fracture
TL;DR: In this article, the authors conducted long-term creep rupture tests for 9Cr-1Mo-V-Nb (P91) steel welded joints and examined the relationship between microstructural changes and crack nucleation site and propagation path.
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Bainitic and martensitic creep-resistant steels
TL;DR: A number of new alloy-design concepts based on microstructure stabilization have been proposed for the development of highly creep-resistant bainitic 3Cr and martensitic 9-12Cr steels with higher creep rupture strength than existing high strength steels such as T23 and P92 as mentioned in this paper.
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Static recovery of tempered lath martensite microstructures during long-term aging in 9–12% Cr heat resistant steels
TL;DR: The static recovery of tempered lath martensite microstructure of strength enhanced ferritic steels has been investigated during very long-term aging up to 2 × 104 h at 650 −°C for 3 steels containing 9 to 12% Cr as mentioned in this paper.
References
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Dispersion hardening effects of Nb-V precipitates in Mod.9Cr-1Mo steels
TL;DR: The mechanism of high creep strength of high nitrogen Mod.9Cr-1Mo steels was metallurgically investigated by using an analytical high-resolution TEM as discussed by the authors, where the threshold stress in the constituent equation, ϵ = A(σ a − σ th ) n exp ( Q RT ), is strongly dependent on dispersion strengthening due to peculiar-shaped niobium-and-vanadium-precipitates, i.e. wing-like vanadium-nitrides "V-wings" adhering to spherical niob