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Bibliografias temáticas / 18MND5 low alloy steel

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Literatura científica selecionada sobre o tema "18MND5 low alloy steel"

Autor: Grafiati

Publicado: 1 de fevereiro de 2025

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Teses / dissertações sobre o assunto "18MND5 low alloy steel"

1

Asselin, Cosson Théotime. "Étude des effets de fermeture des fissures de fatigue sous chargement à rapport de charge négatif." Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0030.

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La fatigue est avec la corrosion sous contrainte le principal moteur des dégradations observées sur les composants du parc nucléaire français. Les chargements induisant de la fatigue oligocyclique dans les composants primaires sont d’origine thermique et peuvent être à rapport de charge négatif. La justification des composants vis-à-vis de la propagation de fissure en fatigue est actuellement effectuée de manière pénalisante, sans prise en compte du sillage plastique. Des travaux de R&D sont donc requis pour améliorer les modèles de propagation en fatigue pour des chargements variables. C’

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2

Cussac, Paul. "Influence d’imperfections surfaciques sur la tenue en fatigue de composants nucléaires." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2020. http://www.theses.fr/2020ESMA0001.

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Dans le contexte de l’industrie nucléaire, la présence éventuelle d’imperfections surfaciques pouvant être générées par des chutes ou frottements d’outils lors de la fabrication et la maintenance des composants se doit d’être justifiée vis-à-vis du phénomène de fatigue. L’objectif premier de cette étude est d’évaluer dans quelle mesure la présence d’imperfections de surface de l’ordre de quelques dixièmes de millimètre de profondeur peut impacter la durée de vie en fatigue oligocyclique. En parallèle, cette étude cherche à décrire, de manière qualitative et quantitative, l’amorçage et la propa

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3

Romo, Arango Sebastian A. "Low-Cycle Fatigue of Low-Alloy Steel Welded Joints." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1573054310351145.

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4

Yin, Maggie Huaying Materials Science &amp Engineering Faculty of Science UNSW. "Metal dusting of iron and low alloy steel." Awarded by:University of New South Wales. School of Materials Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/25188.

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Metal dusting is a kind of catastrophic corrosion phenomenon that can be observed in several of petrochemical processes. It occurs on iron-, nickel- and cobalt-base metals in carbonaceous atmospheres at high temperature when gaseous carbon activity is higher than one. The process is particularly rapid for ferritic alloys The aim of this project was to compare the dusting kinetics of pure iron and a 2.25Cr-1Mo alloy steel under CO-H2-H2O atmosphere at 650??C. Polished (3??m) samples of iron and the steel were exposed to flowing CO-H2-H2O gas atmospheres at 650??C, when the gases were supersat

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5

Myers, M. R. "Damage accumulation in a low alloy ferritic steel." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370975.

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A study has been made of creep damge accumulation in two casts of l%.Cr-1/2%i.Mo low alloy steel. Creep tests and creep crack growth tests have been carried out at 823K to determine the nature of the damage accumulation and to attempt to relate microscopic damage mechanisms to the macroscopic fracture parameters. Four types of specimen were tested and failure of all occurred by the continuous nucleation. growth and coalescence of grain boundary cavities. A mechanism for the growth of cavities is suggested. based on grain boundary diffusion coupled with geometric constraint. The influence of co

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6

Boåsen, Magnus. "Modeling framework for ageing of low alloy steel." Licentiate thesis, KTH, Hållfasthetslära (Inst.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246036.

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Ageing of low alloy steel in nuclear applications commonly takes the form as a hardening and an embrittlement of the material. This is due to the evolution of the microstructure during irradiation and at purely thermal conditions, as a combination or separate. Irradiation introduces evenly distributed solute clusters, while thermal ageing has been shown to yield a more inhomogeneous distribution. These clusters affect the dislocation motion within the material and results in a hardening and in more severe cases of ageing, also a decreased work hardening slope due to plastic strain localization

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7

Chatterjee, Amit. "Hydrogen degradation of plain carbon and low alloy steels /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487264603219536.

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8

Donohoe, C. J. "Corrosion fatigue of a high strength low alloy steel." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322985.

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9

Walker, Nigel Stuart. "Type IV creep cavitation in low alloy ferritic steel weldments." Thesis, University of Bristol, 1997. http://hdl.handle.net/1983/efa6973c-9a3d-4a95-8297-61f12cbde92d.

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10

Cooper, David. "The boundary lubricated friction and wear of low alloy steel." Thesis, Aston University, 1989. http://publications.aston.ac.uk/8067/.

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Pin on disc wear machines were used to study the boundary lubricated friction and wear of AISI 52100 steel sliding partners. Boundary conditions were obtained by using speed and load combinations which resulted in friction coefficients in excess of 0.1. Lubrication was achieved using zero, 15 and 1000 ppm concentrations of an organic dimeric acid additive in a hydrocarbon base stock. Experiments were performed for sliding speeds of 0.2, 0.35 and 0.5 m/s for a range of loads up to 220 N. Wear rate, frictional force and pin temperature were continually monitored throughout tests and where possib

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