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Artigos de revistas sobre o tema "Superalliages à base Ni"

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Publicado: 25 de maio de 2024

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1

Sansoz, F., B. Brethes e A. Pineau. "Propagation des petites fissures de fatigue dans les zones de concentration de contraintes dans un superalliage base Ni". Le Journal de Physique IV 10, PR4 (março de 2000): Pr4–235—Pr4–240. http://dx.doi.org/10.1051/jp4:2000432.

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2

Younes, Rassim, Mohand Amokrane Bradai, Abdelhamid Sadeddine, Youcef Mouadji e Abderrahim Benabbas. "Influence des post-traitements sur la résistance à l’usure des dépôts en superalliage Ni-Cr-Al-Mo obtenus par projection thermique". Matériaux & Techniques 106, n.º 6 (2018): 605. http://dx.doi.org/10.1051/mattech/2019003.

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Ce travail porte sur la caractérisation microstructurale, structurale et mécanique des dépôts métalliques à base Nickel déposés sous forme de poudres par la technique de projection thermique flamme-poudre sur un substrat type E335. Pour améliorer les propriétés de ces dépôts, des traitements thermiques sont préconisés en vue d’homogénéiser ces derniers et permettre d’obtenir de meilleures propriétés mécaniques. Ces post-traitements ont été réalisés à différentes températures 400, 600 et 800 °C avec un temps de maintien d’une heure et un refroidissement à l’air. La caractérisation structurale et microstructurale de la poudre et des dépôts est obtenue en utilisant le microscope électronique à balayage (MEB) et la diffraction X (DRX). Des relevés de micro duretés Vickers ont été également réalisés sur la surface de ces dépôts. Les essais tribologiques ont été réalisés avec une configuration pion-disque à différentes charges avec deux vitesses de glissement en vue de déterminer le taux d’usure. Les observations microstructurales ont montré que les traitements effectués aux températures de 400 et 600 °C ont réduit les porosités en rendant les microstructures plus homogènes et plus denses par le phénomène de colmatage. Par contre, le traitement à 800 °C a présenté un délaminage au niveau de l’interface substrat/dépôt. Les résultats d’usure ont révélé que la vitesse de glissement et la pression de contact appliquée influent sur la variation du taux d’usure et que les dépôts traités à 400 °C présentent une meilleure résistance à l’usure que ceux traités à 600 et 800 °C.

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3

Bartys, H. "Caractérisation de disques de freins ferroviaires revêtus de superalliages Co ou Ni". Mécanique & Industries 1, n.º 6 (dezembro de 2000): 675–82. http://dx.doi.org/10.1016/s1296-2139(00)01065-4.

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4

Coujou, A., e N. Clément. "Mobilité des défauts à différentes températures dans les superalliages base Nickel". Le Journal de Physique IV 06, n.º C2 (março de 1996): C2–89—C2–96. http://dx.doi.org/10.1051/jp4:1996212.

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5

Hazotte, A., e J. Lacaze. "Caractérisation quantitative de la microstructure des superalliages à base de nickel." Revue de Métallurgie 90, n.º 9 (setembro de 1993): 1081. http://dx.doi.org/10.1051/metal/199390091081.

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6

Hazotte, A., e J. Lacaze. "Caractérisation quantitative de la microstructure des superalliages à base de nickel". Revue de Métallurgie 91, n.º 2 (fevereiro de 1994): 277–94. http://dx.doi.org/10.1051/metal/199491020277.

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7

Décamps, Brigitte, Marc Condat e Allan J. Morton. "Comportement dissymétrique des dislocations entre traction et compression dans des superalliages base-nickel". Microscopy Microanalysis Microstructures 2, n.º 6 (1991): 603–16. http://dx.doi.org/10.1051/mmm:0199100206060300.

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8

Décamps, B., V. Brien, J. M. Pénisson, A. J. Morton e M. Condat. "Rôle des interfaces dans les mécanismes élémentaires de déformation des superalliages base nickel". Le Journal de Physique IV 06, n.º C2 (março de 1996): C2–263—C2–268. http://dx.doi.org/10.1051/jp4:1996238.

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9

Hazotte, A. "Transformations et contraintes de cohérence dans les superalliages et les intermétalliques de base TiAl". Matériaux & Techniques 97 (2009): 23–31. http://dx.doi.org/10.1051/mattech/2010011.

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10

Bienvenu, Y., F. Decla e J. C. Garcia. "Phénomènes Diffusionnels et Recristallisation Accompagnant l'Assemblage de Superalliages Base Nickel par Compression à Chaud". Le Journal de Physique IV 05, n.º C3 (abril de 1995): C3–311—C3–316. http://dx.doi.org/10.1051/jp4:1995332.

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11

Quantin, Danièle. "Retour sur les Journées Annuelles de la SF2M 2019". Matériaux & Techniques 107, n.º 6 (2019): N1. http://dx.doi.org/10.1051/mattech/2020010.

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Les Journées Annuelles de la SF2M 2019 se sont déroulées à Paris (Chimie Paris Tech) du 21 au 23 octobre. Plus de 150 participants ont pu assister à 50 présentations scientifiques dont 3 plénières, 1 conférence plénière sur l’histoire des matériaux et table ronde sur les carrières, organisée par le groupe « Jeunes » de la SF2M. Seize posters faisant l’objet d’un concours ont aussi été présentés. Les présentations scientifiques étaient regroupées en 3 thèmes génériques : Fabrication additive, de la fabrication de la matière première à la pièce fonctionnelle ; Ténacité et rupture brutale ; Mise en forme, microstructure et propriétés d’usage des superalliages base nickel polycristallins.

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12

Pettinari, F., M. Jouiad, P. Caron, H. Calderon, A. Coujou e N. Clément. "Influence des solutés sur la déformation de phases γ de superalliages à base de nickel". Revue de Métallurgie 97, n.º 9 (setembro de 2000): 1037–46. http://dx.doi.org/10.1051/metal/200097091037.

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13

N'Gandu Muamba, J. M., R. Streiff e D. H. Boone. "L'influence du hafnium du substrat sur la résistance à l'oxydation des revêtements d'aluminiures sur les superalliages base nickel". Materials Science and Engineering 88 (abril de 1987): 111–21. http://dx.doi.org/10.1016/0025-5416(87)90074-7.

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14

Royer, A., P. Bastie e D. Bellet. "Etude structurale en fonction de la température des superalliages à base de nickel monocristallins par diffractométrie neutron et gamma". Revue de Métallurgie 90, n.º 9 (setembro de 1993): 1104. http://dx.doi.org/10.1051/metal/199390091104.

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15

YAMANAKA, Akihiro, e Hiroyuki ICHIHASI. "Microsegregation in Ni Base Alloy". Tetsu-to-Hagane 75, n.º 3 (1989): 446–53. http://dx.doi.org/10.2355/tetsutohagane1955.75.3_446.

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16

Berthod, Patrick, Steven Raude e Aurélie Chiaravalle. "Étude cinétique de loxydation à haute température et de la volatilisation de la chromine pour des superalliages de fonderie renforcés par carbures.Partie I : cas de superalliages a base de cobalt et influence de la finesse dendritique". Annales de Chimie Science des Matériaux 31, n.º 2 (31 de março de 2006): 237–58. http://dx.doi.org/10.3166/acsm.31.237-258.

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17

Kim, Jong Jip, e Seng Mun Cho. "Hot corrosion resistance of Ni and Ni-base superalloys". Journal of Materials Science Letters 15, n.º 1 (janeiro de 1996): 19–22. http://dx.doi.org/10.1007/bf01855598.

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18

Miyazaki, Shuichi, e Hee Young Kim. "TiNi-Base and Ti-Base Shape Memory Alloys". Materials Science Forum 561-565 (outubro de 2007): 5–21. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.5.

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The basic characteristics of TiNi-based and Ni-free Ti-based shape memory alloys are reviewed. They include the crystal structures of the parent and martensite phases in both the alloys, the recoverable strain associated with the martensitic transformation, the transformation temperatures, the temperature and orientation dependence of deformation behavior, etc. The sputter-deposited Ti-Ni thin films are also reviewed briefly because of their possibility of expanding into micromechanical system applications as the most powerful microactuator.

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19

Podhorná, Božena, Irena Andršová, Jana Dobrovská, Vlastimil Vodárek e Karel Hrbáček. "Structure Stability of Ni-Base and Co-Base Alloys". Materials Science Forum 782 (abril de 2014): 431–36. http://dx.doi.org/10.4028/www.scientific.net/msf.782.431.

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This article summarises results of structure stability investigation of cast Ni-base and Co-base alloys after prolonged high temperature exposure at 900-1100 °C. Cast Ni (Co)-Cr-W-C alloys are resistant to high-temperature corrosion, due to high chromium content. Their heat resistance is caused by presence of carbides, which are stable at very high temperatures. Carbides precipitate in shape of large plate-like particles or carbide eutectics at casting cell boundaries, thus forming carbide skeleton of the alloy. Carbide morphology and temperature stability depends on chemical composition of the alloy, e.g. carbide content, type and content of carbide-forming elements. Microstructure changes were evaluated by stereological analysis and X ray-spectral microanalysis.

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20

Kim, Taek-Soo, Jae-Young Ryu, Jin-Kyu Lee e Jung-Chan Bae. "Synthesis of Cu-base/Ni-base amorphous powder composites". Materials Science and Engineering: A 449-451 (março de 2007): 804–8. http://dx.doi.org/10.1016/j.msea.2006.02.335.

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21

Kajikawa, Koji, Takeshi Sato e Hitohisa Yamada. "Freckle Formation in Ni-base Superalloys". Tetsu-to-Hagane 95, n.º 8 (2009): 613–19. http://dx.doi.org/10.2355/tetsutohagane.95.613.

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22

Gorgannejad, Sanam, Ernesto A. Estrada Rodas e Richard W. Neu. "Ageing kinetics of Ni-base superalloys". Materials at High Temperatures 33, n.º 4-5 (9 de maio de 2016): 291–300. http://dx.doi.org/10.1080/09603409.2016.1176753.

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23

Yamazaki, Michio. "Design and development of Ni-base and Ti-base alloys." Bulletin of the Japan Institute of Metals 29, n.º 1 (1990): 36–42. http://dx.doi.org/10.2320/materia1962.29.36.

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24

Liang, Zhiyuan, e Qinxin Zhao. "High temperature oxidation of Fe–Ni-base alloy HR120 and Ni-base alloy HAYNES 282 in steam". Materials at High Temperatures 36, n.º 1 (27 de abril de 2018): 87–96. http://dx.doi.org/10.1080/09603409.2018.1465712.

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25

Bi, Xiao Fang, e Kazuhiro S. Goto. "High Temperature Oxidation Behaviours of Ni-base and Co-base Superalloys". Journal of the Japan Institute of Metals 51, n.º 11 (1987): 1060–68. http://dx.doi.org/10.2320/jinstmet1952.51.11_1060.

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26

Zhang, Lin-Yang, Ping Shen, Yan Qi e Qi-Chuan Jiang. "Wettability in reactive Sn-base alloy/Ni-base metallic glass systems". Applied Surface Science 276 (julho de 2013): 424–32. http://dx.doi.org/10.1016/j.apsusc.2013.03.110.

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27

Pippel, E., J. Woltersdorf e R. Schneider. "Micromechanisms of metal dusting on Fe-base and Ni-base alloys". Materials and Corrosion 49, n.º 5 (maio de 1998): 309–16. http://dx.doi.org/10.1002/(sici)1521-4176(199805)49:5<309::aid-maco309>3.0.co;2-1.

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28

Janik-Czachor, M. "Passivity of Fe-Ni base amorphous alloys." ISIJ International 31, n.º 2 (1991): 149–53. http://dx.doi.org/10.2355/isijinternational.31.149.

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29

Kunz, Ludvík, Petr Lukáš e Radomila Konečná. "Combined Cycle Fatigue of Ni-Base Superalloy". Key Engineering Materials 465 (janeiro de 2011): 523–26. http://dx.doi.org/10.4028/www.scientific.net/kem.465.523.

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Fatigue life of a cast Ni-base superalloy IN 713LC under combined cycle loading consisting of a superposition of low- and high-cycle fatigue at 800 °C was experimentally determined. No measurable effect of combined cycle was found for studied loading conditions. High scatter of fatigue life related to the initiation of cracks on casting defects was observed. Size of the largest defect in a specimen was predicted by the largest extreme value distribution method. The predicted size was compared with fractographic observation of defects resulting in final fatigue failure.

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30

Zhu, X., T. Zhang, D. Marchant e V. Morris. "Combustion Synthesis of Ni/Al Base Composites". Advanced Materials Research 545 (julho de 2012): 50–55. http://dx.doi.org/10.4028/www.scientific.net/amr.545.50.

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This paper presents a new ignition technique to synthesize NiAl based composites using high frequency induction heating to ignite the combustion reaction. A high resolution thermal imaging camera and two infrared thermometers were used to monitor the complete temperature profiles during synthesis. Thermodynamic calculations were performed to predict the combustion temperature and the effect of preheating temperatures. The results show that the combustion reaction for Ni/Al based composites can be ignited using a high frequency induction heater. High density, multi layer TiC-NiAl composites can be produced using this method, but to ignite the combustion reaction by induction heating for the Ni/Al+Ti/C system, there is a limit for the content of Ti/C, above which the ignition will not start. Ultra fine TiC was synthesized using this technique.

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31

Huang, S. C., E. L. Hall e M. F. X. Gigliotti. "Rapidly solidified Al3Ti-base alloys containing Ni". Journal of Materials Research 3, n.º 1 (fevereiro de 1988): 1–7. http://dx.doi.org/10.1557/jmr.1988.0001.

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Two Ni-modified Al3Ti alloys (Al65Ni10Ti25 and Al62Ni8Ti30) were rapidly solidified by melt spinning. The resulting microstructure was studied using light microscopy and analytical electron microscopy. Significant variations in the microstructure and phases were observed between the two ribbons and through the thickness of each ribbon.A single-phase γ-TiAl structure was seen near the wheel side of the Al62Ni8Ti30 ribbon, having microcrystalline grains ∼ 100 nm in diameter. Second-phase particles of Λ-AlNiTi were found in the remaining regions of that ribbon as the structure became columnar due to reduced rates of cooling. The Al65Ni10Ti25 alloy exhibited a primary phase of π-Al6.5 NiTi2.5. A second phase of μ-Al2NiTi formed with morphology and distribution varying through thickness. Microchemistry measurements on the phases indicated substantial deviations (up to 14 at. %) from the stoichiometric compositions. Further, the π, γ, and μ are low-temperature phases that do not form by solidification under equilibrium conditions. The observation of these phases thus suggests significant undercoolings achieved during the melt-spinning processing of the present alloys. Both ribbons are brittle as spun.

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32

CHEN, Qiang, Norio KAWAGOISHI, Hironobu NISITANI, Ken-ichi OTSUBO, Qingyuan WANG e Eiji KONDO. "Ultrasonic Fatigue Properties of Ni-Base Superalloy." Transactions of the Japan Society of Mechanical Engineers Series A 69, n.º 679 (2003): 626–32. http://dx.doi.org/10.1299/kikaia.69.626.

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33

Li, Weimin, e Sindo Kou. "Ni-base superalloy rods pulled from melts". Journal of Crystal Growth 177, n.º 1-2 (maio de 1997): 140–44. http://dx.doi.org/10.1016/s0022-0248(96)00850-0.

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34

Felicelli, S. D., D. R. Poirier e J. C. Heinrich. "Macrosegregation patterns in multicomponent Ni-base alloys". Journal of Crystal Growth 177, n.º 1-2 (maio de 1997): 145–61. http://dx.doi.org/10.1016/s0022-0248(96)01069-x.

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35

Lian, K., D. W. Kirk e S. J. Thorpe. "Electrocatalytic behaviour of Ni-base amorphous alloys". Electrochimica Acta 36, n.º 3-4 (janeiro de 1991): 537–45. http://dx.doi.org/10.1016/0013-4686(91)85138-w.

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36

Tawancy, H. M., N. M. Abbas, A. I. Al-Mana e T. N. Rhys-Jones. "Thermal stability of advanced Ni-base superalloys". Journal of Materials Science 29, n.º 9 (maio de 1994): 2445–58. http://dx.doi.org/10.1007/bf00363439.

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37

Hong, N. M., H. Michor, M. Vybornov, T. Holubar, P. Hundegger, W. Perthold, G. Hilscher e P. Rogl. "Superconductivity in Y-Ni-B base compounds". Physica C: Superconductivity 227, n.º 1-2 (junho de 1994): 85–94. http://dx.doi.org/10.1016/0921-4534(94)90360-3.

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38

Penkalla, H. J., J. Wosik e A. Czyrska-Filemonowicz. "Quantitative microstructural characterisation of Ni-base superalloys". Materials Chemistry and Physics 81, n.º 2-3 (agosto de 2003): 417–23. http://dx.doi.org/10.1016/s0254-0584(03)00037-3.

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39

Huis in't Veld, A. J., e J. Th M. De Hosson. "Crack initiation in a Ni-base superalloy". Scripta Metallurgica 21, n.º 11 (novembro de 1987): 1481–86. http://dx.doi.org/10.1016/0036-9748(87)90287-0.

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40

Smith, A. B., e S. M. Ng. "Aluminide Diffusion Coatings on Ni-base Superalloys". Transactions of the IMF 74, n.º 2 (janeiro de 1996): 64–65. http://dx.doi.org/10.1080/00202967.1996.11871096.

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41

Dupin, N., e B. Sundman. "A thermodynamic database for Ni-base superalloys". Scandinavian Journal of Metallurgy 30, n.º 3 (junho de 2001): 184–92. http://dx.doi.org/10.1034/j.1600-0692.2001.300309.x.

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42

AGHAIE-KHAFRI, M., e M. NOORI. "Life prediction of a Ni-base superalloy". Bulletin of Materials Science 34, n.º 2 (abril de 2011): 305–9. http://dx.doi.org/10.1007/s12034-011-0074-8.

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43

Westbrooke, Eboni F., Luis E. Forero e Fereshteh Ebrahimi. "Slip analysis in a Ni-base superalloy". Acta Materialia 53, n.º 7 (abril de 2005): 2137–47. http://dx.doi.org/10.1016/j.actamat.2005.01.025.

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44

Mehner, A., T. Hoja, F. Hoffmann, H. W. Zoch, M. Kleingries, H. Ackermann, H. Köhne e K. Lucka. "Metal dusting of high temperature Cr-Ni steels and Ni-base alloys". HTM Journal of Heat Treatment and Materials 65, n.º 1 (fevereiro de 2010): 30–36. http://dx.doi.org/10.3139/105.110046.

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45

Huang, He Fei, De Hui Li e Long Yan. "Xenon Ion Irradiation Effects on a Ni-Base Ni-17Mo-7Cr Alloy". Advances in Science and Technology 94 (outubro de 2014): 69–74. http://dx.doi.org/10.4028/www.scientific.net/ast.94.69.

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The irradiation effects of a new nickel-base alloy (Ni-17Mo-7Cr) has been investigated by using 1 MeV Xe20+ and 7 MeV Xe26+ ions irradiation with displacement damage range from 0.33 to 6.6 dpa. The transmission electron microscopy and nanoindentation were employed to study respectively the microstructural evolution of thin-foil specimens and nanoindentation hardness changes of bulk specimens. In case of 0.33 dpa, high number density of nano-scale black spots were observed in thin-foil specimens. High-resolution transmission electron microscopy images revealed that these black spots are some rounded solute clusters and dislocation loops. As far as the ion dose of 3.3 and 6.6 dpa, the black spots were replaced with linear-like defects which were proved to be some Ni, Mo and Cr-enrichment regions. In addition, nanoindentation results for bulk specimens showed an evident hardening phenomenon in irradiated Ni-17Mo-7Cr alloys, compared to the unirradiated specimen. The irradiation induced defects may be responsible for the hardening of Ni-17Mo-7Cr alloys.

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46

N'gandu Muamba, J. M., e R. Streiff. "Sur l'effet de quelques eléments d'addition du substrat sur l'oxydation des revêtements d'aluminiures modifiés par le chrome déposés sur des superalliages à base nickel". Materials Science and Engineering: A 120-121 (dezembro de 1989): 391–405. http://dx.doi.org/10.1016/0921-5093(89)90793-4.

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47

Assusa, Gonzalo. "Ni jóvenes, ni desempleados, ni peligrosos, ni novedosos. Una crítica sociológica del concepto de “jóvenes nini” en torno los casos de España, México y Argentina". Cuadernos de Relaciones Laborales 37, n.º 1 (10 de junho de 2019): 91–111. http://dx.doi.org/10.5209/crla.63821.

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La noción de nini clasifica los jóvenes que no trabajan ni estudian. El presente artículo pone en diálogo una serie de investigaciones sobre la temática y explora algunos puntos de continuidad entre sus análisis. El objetivo del texto es discutir con evidencia empírica los supuestos y asunciones no problematizadas de la categoría nini para reinsertar la problemática en la relación entre los jóvenes y la cristalización más amplia de procesos multidimensionales de producción y reproducción de las desigualdades. Con este objetivo el artículo analiza los principales debates acerca de las mediciones y las hipótesis interpretativas fundamentales en base a una serie de investigaciones antecedentes y pone en relación el análisis de los nini con la dinámica del mercado de trabajo en base a datos estadísticos de España, México y Argentina. El texto concluye identificando desafíos para las políticas de intervención sobre la problemática.

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48

Lipshutz, Bruce H., Tom Butler, Bryan A. Frieman, Vladimir Kogan, Ching-Tien Lee, Asher Lower, Danielle M. Nihan, Benjamin R. Taft e Anthony E. Tomaso. "New technologies in catalysis using base metals". Pure and Applied Chemistry 78, n.º 2 (1 de janeiro de 2006): 377–84. http://dx.doi.org/10.1351/pac200678020377.

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49

R. Juan, Gabriel. "Inteligencia Artificial y derecho. Ni dioses ni bestias ni cíborgs: homo juridicus." IUS ET SCIENTIA 1, n.º 7 (2021): 101–8. http://dx.doi.org/10.12795/ietscientia.2021.i01.08.

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El presente trabajo parte de una defensa del Derecho de los sistemas jurídicos constitucionalizados, por el lugar central que otorga a los derechos humanos, cuya base es la dignidad de la persona humana. Destaca asimismo que la aspiración de realización del valor justicia nos caracteriza como Homo Juridicus. Todo lo cual encuentra justificación en una ética humanista que, en tanto integrante de una cultura jurídica, concuerda con el objeto de estudio del Bioderecho Internacional. En ese marco, luego de identificar los problemas y riesgos de la Inteligencia Artificial, de conceptualizar y caracterizar la posición transhumanista, mediante un abordaje ético se contrapone esta última visión con aquella biojurídica. La conclusión es que esta última es la única que proporciona una adecuada justificación a las acciones y límites normativos.

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Feng, Longsheng, D. Lv, R. K. Rhein, J. G. Goiri, M. S. Titus, A. Van der Ven, T. M. Pollock e Y. Wang. "Shearing of γ’ particles in Co-base and Co-Ni-base superalloys". Acta Materialia 161 (dezembro de 2018): 99–109. http://dx.doi.org/10.1016/j.actamat.2018.09.013.

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