Academic literature on the topic 'Nickelbased superalloy'

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Journal articles on the topic "Nickelbased superalloy"

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DONG, Gengyi, Yilit YIJIALA, Wenjun HAN, et al. "A Prediction Model of Evaporation Behavior of Nickel-Based Superalloy in Electron Beam Melting." Progress in Chinese Materials Sciences 3, no. 1 (2024): 1–11. http://dx.doi.org/10.48014/pcms.20231010001.

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The electron beam melting technique has emerged as a novel refining technology extensively employed for alloy purification due to its advantages of effectively eliminating volatile impurities and non-metallic inclusions. However, a drawback associated with the melting process is the evaporation of alloy elements, which results in an uncontrollable alloy composition. In this paper, Wagner model is used to calculate and study the evaporation behavior. of nickel-based superalloy, and the database of infinite dilution activity coefficient and interaction coefficient of nickelbased superalloy has b
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Lindström, Thomas, Robert Eriksson, Daniel Ewest, Kjell Simonsson, Jan-Erik Lundgren, and Daniel Leidermark. "Crack initiation prediction of additive manufactured ductile nickelbased superalloys." MATEC Web of Conferences 165 (2018): 04013. http://dx.doi.org/10.1051/matecconf/201816504013.

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A model to predict crack initiation life of an additive manufactured nickel-based superalloy similar to Hastelloy X subjected to low-cycle fatigue loading at room temperature has been developed, taking material anisotropy into account. An anisotropic constitutive model based on the Hill yield criterion was developed, with linear kinematic hardening up to a saturation value of the back stress, above which the material behaves perfectly plastic. Low-cycle fatigue experiments has been performed on additive manufactured smooth bars with two different build orientations, with an angle of 0⁰ and 90⁰
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Wang, Kailun, Jinpeng Zhu, Hailong Wang, et al. "Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance." Journal of Advanced Ceramics 11, no. 10 (2022): 1571–82. http://dx.doi.org/10.1007/s40145-022-0630-2.

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AbstractHigh-entropy rare-earth aluminate (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 (HE-RE3Al5O12) has been considered as a promising thermal protection coating (TPC) material based on its low thermal conductivity and close thermal expansion coefficient to that of Al2O3. However, such a coating has not been experimentally prepared, and its thermal protection performance has not been evaluated. To prove the feasibility of utilizing HE-RE3Al5O12 as a TPC, HE-RE3Al5O12 coating was deposited on a nickelbased superalloy for the first time using the atmospheric plasma spraying technique. The stability, surf
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Razak, N. H., M. M. Rahman, and K. Kadirgama. "Cutting force and chip formation in end milling operation when machining nickelbased superalloy, Hastelloy C-2000." JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES 14, no. 1 (2017): 2539–51. http://dx.doi.org/10.15282/jmes.11.1.2017.12.0233.

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Koltygin, A. V., V. E. Bazhenov, A. I. Bazlov, T. A. Bazlova, and V. D. Belov. "Effect of scrap using in charge on the microstructure and properties of ZhS6U nickel-based superalloy. Part 2. Structure analysis and mechanical properties of ZhS6U prepared with scrap." Izvestiya. Ferrous Metallurgy 62, no. 7 (2019): 525–30. http://dx.doi.org/10.17073/0368-0797-2019-7-525-530.

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The second part of the article considers influence of the scrap amount on structure and mechanical properties of ZhS6U-VI nickelbased superalloy. As the use of scrap is associated with the possibility of alloy contamination by nonmetallic inclusions and loss of alloying elements, the influence of scrap on alloy structure and mechanical properties is in great importance. The samples with diameter of 12 mm were melted in a vacuum arc furnace and were casted into a copper mold from the virgin ZhS6U-VI alloy without scrap and from alloys with 50 % and 100 % of scrap. The alloys structures were inv
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Shirzadi, A. A., and E. R. Wallach. "Novel Method for Diffusion Bonding Superalloys and Aluminium Alloys (USA Patent 6,669,534 B2, European Patent Pending)." Materials Science Forum 502 (December 2005): 431–36. http://dx.doi.org/10.4028/www.scientific.net/msf.502.431.

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A novel method for diffusion bonding metallic alloys with stable surface oxide films (e.g. nickel and cobalt base superalloys and aluminium alloys) has been developed. The stable oxides on the faying surfaces of these alloys are replaced, prior to the bonding process, with a very thin metallic layer and/or less stable oxides, using a proprietary non-chemical oxide removal method based on the use of gallium. This new method is very rapid and neither requires the use of any sophisticated equipment nor is a costly process. Bonding is then readily achieved by either solid-state or transient-liquid
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Busse, Christian, Frans Palmert, Paul Wawrzynek, Björn Sjödin, David Gustafsson, and Daniel Leidermark. "Crystallographic crack propagation rate in single-crystal nickelbase superalloys." MATEC Web of Conferences 165 (2018): 13012. http://dx.doi.org/10.1051/matecconf/201816513012.

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Single-crystal nickel-base superalloys are often used in the hot sections of gas turbines due to their good mechanical properties at high temperatures such as enhanced creep resistance. However, the anisotropic material properties of these materials bring many difficulties in terms of modelling and crack growth prediction. Cracks tend to switch cracking mode from Mode I cracking to crystallographic cracking. Crystallographic crack growth is often associated with a decrease in crack propagation life compared to Mode I cracking and this must be taken into account for reliable component lifing. I
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Engberg,, Goran, and Luis Mendoza Camus,. "Tertiary Creep in the Cast Nickelbase Superalloy IN738LC. Effects of Pretreatments." High Temperature Materials and Processes 9, no. 1 (1990): 39–50. http://dx.doi.org/10.1515/htmp.1990.9.1.39.

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Liu, Yong, and Shao Fu Huang. "Experimental Study on Electrochemical Drilling of Micro Holes with High Aspect Ratio." Advanced Materials Research 941-944 (June 2014): 1952–55. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1952.

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It is a difficult problem to fabricate deep and micro holes on the difficult-to-cut metals in the field of aviation manufacturing. The experimental research of electrochemical drilling technology with high-speed micro electrode for fabricating deep micro holes is carried out. The influences of rotary speed on machining precision and stability are studied. The holes, which the diameter is about 400μm, the aspect ratio is more than 10, and have steep wall and sharp edges were fabricated successfully on the nickelbase superalloys on self-developed high-precision micro-electrochemical machining sy
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Bäker, Martin, and Joachim Rösler. "Effect of Co and Cr on the Stability of Strengthening Phases in Nickelbase Superalloys." Crystals 12, no. 8 (2022): 1084. http://dx.doi.org/10.3390/cryst12081084.

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Nickel-base superalloys such as VDM 780 may possess a high content of Cr and Co. This influences solution energies of phase-forming elements such as Al and Ta (γ′-phase), Nb (γ′′- and δ-phase), and Ti (η-phase). We perform density functional theory studies of a nickel matrix at 0 K with high concentrations of either Co and Cr and calculate the influence of these elements on solution energies. In the case of Co, the solution energy can be predicted well by the nearest-neighbor interaction in the Co-rich matrix. For Cr, the effect is more complicated because Cr has a larger ionic radius and chan
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Dissertations / Theses on the topic "Nickelbased superalloy"

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Okasha, Mostafa Mohamed Mahmoud. "Combined laser and mechanical microdrilling of nickel-based superalloy." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/combined-laser-and-mechanical-microdrilling-of-nickelbased-superalloy(e51108d5-6519-412e-809d-2b2ad9fe4a8a).html.

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Drilling is an industrial process in which holes are produced by removal of material. This process is relatively well established for macroscale machining. However, microscale mechanical drilling is a more challenging process, especially in parts made of difficult-to-cut materials such as nickel-based superalloys. Although laser drilling and electrical discharge machining (EDM) have been reported as alternatives, mechanical drilling continues to be widely used for industrial macroscale drilling. However, mechanical microdrilling suffers from premature drill breakage due to the fragile nature o
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Fazal, Mohammed. "Understanding the microstructural efects in a large grain cast nickel-based superalloy." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/understanding-the-microstructural-efects-in-a-large-grain-cast-nickelbased-superalloy(a6255d81-ba70-48ed-a5bc-917ae1e95fb4).html.

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Scatter observed in the fatigue test results of a cast nickel-based superalloy may arise from its coarse grain microstructure. With only a few grains through the sample cross-section, it has been postulated that the inherent anisotropy of individual grains results in the different surface strain distributions during testing. Crystal plasticity finite element modelling (CPFEM) was used to model the deformation of a fat test piece containing a few grains in the cross-section. The mesh was generated using EBSD maps from the surfaces of samples that were subjected to monotonic and cyclic loading a
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Karabela, Alkistis. "An experimental and computational study of damage and crack growth for a nickel-based superalloy under fatigue-oxidation conditions." Thesis, University of Portsmouth, 2011. https://researchportal.port.ac.uk/portal/en/theses/an-experimental-and-computational-study-of-damage-and-crack-growth-for-a-nickelbased-superalloy-under-fatigueoxidation-conditions(5c2951b6-04c4-45db-88ff-0790b2e1a7b8).html.

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Oxidation damage, in conjunction with fatigue, is a concern for nickel-based superalloys utilised as disc rotors in high pressure compressor and turbine of aero-engines. A combined experimental and numerical study has been carried out for alloy RR1000, developed at Rolls-Royce plc through a powder metallurgy route to meet the demands for higher overall pressure ratios, compressor discharge temperatures and rotational speeds for the latest aero-engines. Cyclic experiments have been carried out for waisted specimens at selected temperatures (700°C-800°C), followed by microscopy examination using
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Aba-Perea, Pierre-Emmanuel. "In-situ stress relaxation studies in nickel-base superalloy forgings." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/insitu-stress-relaxation-studies-in-nickelbase-superalloy-forgings(13c9a3e7-8ad3-4d9f-abb3-4e379745318a).html.

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The manufacturing of nickel-base superalloy forging for aero-engine applications requires a number of thermo-mechanical processing steps, which generate significant residual stresses that can result in distortion, uncontrolled deformation of the component during machining, or, when added to the in-service stresses, they will increase the crack initiation probability and hence reduce component life. Ageing treatments are applied to nickel-base superalloys in order to precipitate the strengthening phases that give to the alloys their remarkable strength over a wide temperature range. These isoth
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Knoche, Elisabeth Marie. "Influence of the precipitate size on the deformation mechanisms in two nickel-base superalloys." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/influence-of-the-precipitate-size-on-the-deformation-mechanisms-in-two-nickelbase-superalloys(8b80d24c-62de-4741-a827-4fb5a10c752b).html.

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The polycrystalline nickel-base superalloys RR1000 and Udimet 720Li (U720Li) were developed for turbine disc applications. These alloys contain a higher volume fraction of the ordered γ' phase (close to 50%) when compared to previous generation alloys (~ 25%) in order to ensure that they retain high strength at operating temperatures exceeding 700°C. The increased percentage of precipitates in the material leads to higher levels of constraint between matrix and the precipitates, and this will have consequences for the deformation mechanisms of the aggregate. It is therefore important to unders
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Books on the topic "Nickelbased superalloy"

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Słodki, Bogdan. Fizyczne i technologiczne aspekty zwijania i łamania wióra w obróbce superstopów na bazie niklu: Physical and technological aspects concerning chip curl and breaking in nickel based superalloys machining = Physische und technologische Aspekten von der Spanwicklung und dem Spanbrechen bei dem Zerspanen von Superlegierungen auf dem Nickelbasis. Wydawnictwo PK, 2012.

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Book chapters on the topic "Nickelbased superalloy"

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Niklasson, Fredrik. "Shear Spinning of Nickelbased Super-Alloy 718." In Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89480-5_51.

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GNÄUPEL-HEROLD, T., A. MÜLLER, and W. REIMERS. "PHASE SPECIFIC STRAINS AT HIGH TEMPERATURES IN THE MONOCRYSTALLINE NICKELBASE SUPERALLOY SC16." In Local Strain and Temperature Measurement. Elsevier, 1999. http://dx.doi.org/10.1016/b978-1-85573-424-1.50016-2.

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Conference papers on the topic "Nickelbased superalloy"

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Hyde, C. J., W. Sun, T. H. Hyde, and A. A. Becker. "The Effect of a Starter Notch on the Isothermal and Thermomechanical Fatigue Life of a Nickel-Based Superalloy." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25071.

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The effect that a starter notch has on the life of a Nickelbased superalloy which is used in the high temperature regions of aeroengines has been considered for this study under both isothermal fatigue (IF) and thermomechanical fatigue (TMF) conditions. The components made from this material in these regions are usually subjected to cyclic mechanical and thermal loading and hence it is necessary that this form of loading does not lead to cracking and hence crack growth leading to failure. It is therefore important to build up an understanding of the effect that these loading conditions have on
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Tsui, Y. C., and T. W. Clyne. "Adhesion of Thermal Barrier Coating Systems and Incorporation of an Oxidation Barrier Layer." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0275.

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Abstract The adhesion of various interfaces in thermal barrier coating systems strongly affects their stability and thermal cycling life. A new spontaneous debonding technique and the four point bend delamination test have been applied to measure the interfacial fracture toughnesses of various interfaces in several thermal barrier coating systems. The spontaneous debonding technique is based on spraying a relatively stiff layer on top of the ZrO2 coating. This raises the strain energy release rate for debonding, the magnitude of which is monitored via modelling of the stress distribution. The
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