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Journal articles on the topic 'Cobalt base superalloys'

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Published: 6 September 2023
Last updated: 7 September 2023

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1

Klarstrom, D. L. "Wrought cobalt- base superalloys." Journal of Materials Engineering and Performance 2, no. 4 (1993): 523–30. http://dx.doi.org/10.1007/bf02661736.

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2

Suzuki, Akane, Haruyuki Inui, and Tresa M. Pollock. "L12-Strengthened Cobalt-Base Superalloys." Annual Review of Materials Research 45, no. 1 (2015): 345–68. http://dx.doi.org/10.1146/annurev-matsci-070214-021043.

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3

Lee, J. S., Je Hyun Lee, Baig Gyu Choi, Chang Yong Jo, Ung Yu Paik, and S. G. Gang. "The Solidification Microstructure and Carbide Formation Behaviors in the Cobalt-Based Superalloy ECY768." Materials Science Forum 486-487 (June 2005): 374–77. http://dx.doi.org/10.4028/www.scientific.net/msf.486-487.374.

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Co-base superalloys have been applied in the stationary compoents of gas turbine owing to their excellent high temperaure properties. The stationary Co-base alloy components are generally manufactured by casting. Solidification behavior of the alloy is an important factor in the selection of casting parameters. In the present study, solidification microstructure and carbide formation behaviors were studied by directional solidification. Directional solidification experiments were carried out at the solidification rates of 0.5 ~ 150µm/s with the Co-base superalloy ECY768. Between the dendrites
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4

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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5

Yuan, Chao, Jian Ting Guo, and Lan Zhang Zhou. "Effect of Nitrogen on Microstructure and Properties of a Cast Cobalt-Base Superalloy." Advanced Materials Research 278 (July 2011): 472–78. http://dx.doi.org/10.4028/www.scientific.net/amr.278.472.

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The effect of the nitrogen on the microstructure and properties of a cast Co-based superalloy K640S was investigated with the different level ranged from 24 ppm to 85 ppm. The results indicate that almost all nitrogen exist in the form of nitride precipitation in the vacuum induction melting. It is found that high N level would extend the solidification window during the solidification process, and then increase the quantity of the carbide eutectic phases and led to the distribution in the network form of the eutectics in the interdendritic regions. High nitrogen content (more than 40 ppm) can
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6

Kolb, Markus, Christopher H. Zenk, Anna Kirzinger та ін. "Influence of rhenium on γ′-strengthened cobalt-base superalloys". Journal of Materials Research 32, № 13 (2017): 2551–59. http://dx.doi.org/10.1557/jmr.2017.242.

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7

Kvapilová, Marie, Božena Podhorná, Jiri Dvorak, et al. "Creep Damage Mechanisms in Cast Cobalt Superalloys for Applications in Glass Industry." Key Engineering Materials 774 (August 2018): 173–78. http://dx.doi.org/10.4028/www.scientific.net/kem.774.173.

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Two cast NbC and TaC- strengthened cobalt-base superalloys have been developed for a precision casting of spinner discs for glass wool industry. In the present study, the relationships between the type and morphology of carbides and the degradation processes in both types of cast cobalt-based superalloys subjected to high temperature creep have been examined. It was found that the nature of carbides within the alloy microstructure plays a critical role in determining the creep damage processes and microstructure stability of the alloy system under high temperature creep. The morphology of the
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8

Shahriary, M. S., Y. Miladi Gorji, and A. M. Kolagar. "Gas metal arc welding in refurbishment of cobalt base superalloys." IOP Conference Series: Materials Science and Engineering 164 (January 2017): 012016. http://dx.doi.org/10.1088/1757-899x/164/1/012016.

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9

Berthod, Patrice, Jean-Paul Gomis, Lionel Aranda, and Pierre-Jean Panteix. "Thermal Expansion and Microstructure Behavior at Elevated Temperature of various {Ni, Co}-based Cast Superalloys." Academic Journal of Chemistry, no. 53 (March 25, 2020): 17–24. http://dx.doi.org/10.32861/ajc.53.17.24.

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This paper aims to investigate the thermal expansion behavior, up to an elevated temperature, of superalloys based on nickel and cobalt with various proportions and designed to be strengthened by tantalum carbides. The as-cast microstructures of these superalloys and their evolutions at two very high temperatures were also of interest. All results are discussed by considering the Ni/Co repartition in the base element position. It appears that when the Ni content is higher than the Co one: 1/the thermal expansion is slower, 2/the as-cast microstructures as well as the ones stabilized at high te
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10

Coedo, A. Gómez, M. T. Dorado López, and A. Vindel Maeso. "Inductively coupled plasma atomic emission spectrometric analysis of cobalt-base superalloys." J. Anal. At. Spectrom. 2, no. 6 (1987): 629–35. http://dx.doi.org/10.1039/ja9870200629.

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11

Lawen, J. L., S. J. Calabrese, and O. S. Dinc. "Wear Resistance of Super Alloys at Elevated Temperatures." Journal of Tribology 120, no. 2 (1998): 339–44. http://dx.doi.org/10.1115/1.2834432.

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This paper provides the results of an extensive sliding wear testing program to evaluate wear resistance of several material couples currently used for high temperature applications such as ground based gas turbines and aircraft engines. Nickel and cobalt base superalloys and iron base stainless steels were tested in different combinations, and their wear rates compared to determine optimal wear resistance. The results show that an alloy’s wear resistance is highly dependent on operating temperature and its coupling with another material. The influences of friction, hardness, and oxide formati
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12

Suzuki, Takanobu, Tadaharu Yokokawa, Toshiharu Kobayashi, Hiroshi Harada, and Hachiro Imai. "Effect of Cobalt on Micro-Structural Parameters of Ni-Base Single Crystal Superalloys." Journal of the Japan Institute of Metals 70, no. 2 (2006): 173–75. http://dx.doi.org/10.2320/jinstmet.70.173.

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13

Sun, Zhan, Xi Chen, Lixia Zhang, Saisai Zhang, and Jicai Feng. "Experimental and Numerical Study of Transient Liquid Phase Diffusion Bonded DZ40M Superalloys." Crystals 11, no. 5 (2021): 479. http://dx.doi.org/10.3390/cryst11050479.

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Transient liquid phase (TLP) diffusion bonding of DZ40M cobalt-based superalloy was carried out using a self-made NiCrCoWB intermediate layer. The typical microstructure of the joint was investigated. The effect of holding time on the microstructural evolution and the tensile strength of the brazed joints was studied. The tensile strength of the joints TLP bonded at 1160 °C for 60 min reached the maximum value of 487 MPa, which was 88.6% of the base metal strength. The diffusion of boron and the evolution of the eutectic zone were numerically studied. The time needed for isothermal solidificat
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14

Goward, G. W., and L. W. Cannon. "Pack Cementation Coatings for Superalloys: A Review of History, Theory, and Practice." Journal of Engineering for Gas Turbines and Power 110, no. 1 (1988): 150–54. http://dx.doi.org/10.1115/1.3240078.

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Nickel and cobalt-base superalloy blades and vanes in the hot sections of all gas turbines are coated to enhance resistance to hot corrosion. Pack cementation aluminizing, invented in 1911, is the most widely used coating process. Corrosion resistance of aluminide coatings can be increased by modification with chromium, platinum, or silicon. Chromium diffusion coatings can be used at lower temperatures. Formation and degradation mechanisms are reasonably well understood and large-scale manufacturing processes for these coatings are gradually being automated. Pack cementation and related diffus
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15

Wang, W. Z., T. Jin, J. H. Jia, J. L. Liu, and Z. Q. Hu. "Effects of cobalt on creep rupture properties and dislocation structures in nickel base superalloys." Materials Science and Engineering: A 624 (January 2015): 220–28. http://dx.doi.org/10.1016/j.msea.2014.11.038.

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16

Neumeier, S., L. P. Freund та M. Göken. "Novel wrought γ/γ′ cobalt base superalloys with high strength and improved oxidation resistance". Scripta Materialia 109 (грудень 2015): 104–7. http://dx.doi.org/10.1016/j.scriptamat.2015.07.030.

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17

Eggeler, Yolita M., Michael S. Titus, Akane Suzuki, and Tresa M. Pollock. "Creep deformation-induced antiphase boundaries in L1 2 -containing single-crystal cobalt-base superalloys." Acta Materialia 77 (September 2014): 352–59. http://dx.doi.org/10.1016/j.actamat.2014.04.037.

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18

Kolb, M., L. P. Freund, F. Fischer та ін. "On the grain boundary strengthening effect of boron in γ/γ′ Cobalt-base superalloys". Acta Materialia 145 (лютий 2018): 247–54. http://dx.doi.org/10.1016/j.actamat.2017.12.020.

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19

YANG, HO-YOUNG, JAE-HOON KIM, and KEUN-BONG YOO. "LOW CYCLE FATIGUE BEHAVIOR AND LIFE PREDICTION OF A CAST COBALT-BASED SUPERALLOY." International Journal of Modern Physics: Conference Series 06 (January 2012): 251–56. http://dx.doi.org/10.1142/s2010194512003261.

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Co -base superalloys have been applied in the stationary components of gas turbine owing to their excellent high temperature properties. Low cycle fatigue data on ECY-768 reported in a companion paper were used to evaluate fatigue life prediction models. In this study, low cycle fatigue tests are performed as the variables of total strain range and temperatures. The relations between plastic and total strain energy densities and number of cycles to failure are examined in order to predict the low cycle fatigue life of Cobalt-based super alloy at different temperatures. The fatigue lives is eva
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20

Pirowski, Z. "Thermal Analysis in the Technological “Step” Test of H282 Nickel Alloy." Archives of Foundry Engineering 15, no. 1 (2015): 87–92. http://dx.doi.org/10.1515/afe-2015-0016.

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Abstract Superalloys show a good combination of mechanical strength and resistance to surface degradation under the influence of chemically active environments at high temperature. They are characterized by very high heat and creep resistance. Their main application is in gas turbines, chemical industry, and in all those cases where resistance to creep and the aggressive corrosion environment is required. Modern jet engines could never come into use if not for progress in the development of superalloys. Superalloys are based on iron, nickel and cobalt. The most common and the most interesting
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21

Suzuki, Takanobu, Tadaharu Yokokawa, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada, and Hachiro Imai. "Effect of Cobalt on Microstructural Parameters and Mechanical Properties of Ni-Base Single Crystal Superalloys." Journal of the Japan Institute of Metals 71, no. 2 (2007): 233–38. http://dx.doi.org/10.2320/jinstmet.71.233.

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22

Tanaka, Manabu. "Improvement of Creep-Rupture Properties by Serrated Grain Boundaries in Hish-Tungsten Cobalt-Base Superalloys." International Journal of Materials Research 84, no. 1 (1993): 51–56. http://dx.doi.org/10.1515/ijmr-1993-840110.

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23

Berthod, P., S. Michon, L. Aranda, S. Mathieu, and J. C. Gachon. "Experimental and thermodynamic study of the microstructure evolution in cobalt-base superalloys at high temperature." Calphad 27, no. 4 (2003): 353–59. http://dx.doi.org/10.1016/j.calphad.2004.01.001.

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24

ARAI, Takashi, Toshiharu KOBAYASHI, Takehiko ITAGAKI, Kisaburo KOIKE, and Nobuo SAKUMA. "Production of Tungsten Wire Reinforced Cobalt Base Superalloys by Vacuum Casting and Their Creep Rupture Properties." Tetsu-to-Hagane 73, no. 10 (1987): 1389–96. http://dx.doi.org/10.2355/tetsutohagane1955.73.10_1389.

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25

Tanaka, M. "Effects of high-temperature ageing on the creep-rupture properties of high-tungsten cobalt-base superalloys." Journal of Materials Science 29, no. 10 (1994): 2620–28. http://dx.doi.org/10.1007/bf00356809.

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26

Nathal, M. V., and L. J. Ebert. "The influence of cobalt, tantalum, and tungsten on the microstructure of single crystal nickel-base superalloys." Metallurgical Transactions A 16, no. 10 (1985): 1849–62. http://dx.doi.org/10.1007/bf02670372.

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27

Weiser, Martin, Angelika Reichmann, Mihaela Albu, Sannakaisa Virtanen, and Peter Poelt. "In Situ Investigation of the Oxidation of Cobalt-Base Superalloys in the Environmental Scanning Electron Microscope." Advanced Engineering Materials 17, no. 8 (2015): 1158–67. http://dx.doi.org/10.1002/adem.201500146.

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28

Mughrabi, Haël. "The importance of sign and magnitude of γ/γ′ lattice misfit in superalloys—with special reference to the new γ′-hardened cobalt-base superalloys". Acta Materialia 81 (грудень 2014): 21–29. http://dx.doi.org/10.1016/j.actamat.2014.08.005.

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29

Berthod, P., S. Raude, A. Chiaravalle, A. S. Renck, C. Rapin, and R. Podor. "Influence of the microstructure texture of nickel base and cobalt base cast superalloys on their oxdation behaviour at high temperature." Revue de Métallurgie 101, no. 12 (2004): 1031–42. http://dx.doi.org/10.1051/metal:2004109.

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30

Devaux, Alexander, Eric Georges, and Philippe Héritier. "Development of New C&W Superalloys for High Temperature Disk Applications." Advanced Materials Research 278 (July 2011): 405–10. http://dx.doi.org/10.4028/www.scientific.net/amr.278.405.

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The enhancement of efficiency in gas turbine engines requires the development of new superalloys capable of withstanding higher temperatures. The development of novel industrial cast and wrought (C&W) disk alloys with required combination of strength, creep and fatigue resistances at 700°C is particularly desired due to the expensive cost of powder metallurgy. In this context, new C&W disk alloys were recently developed to fulfill these requirements. TMW4 shows higher properties than the current C&W disk alloy despite an expensive cost due to its high cobalt content, where as 718Pl
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31

Bobeck, Gene E., and R. V. Miner. "Effects of cobalt concentration on the relative resistance to octahedral and cube slip in nickel-base superalloys." Metallurgical Transactions A 19, no. 11 (1988): 2733–39. http://dx.doi.org/10.1007/bf02645808.

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32

Tarasova, T. V., A. P. Nazarov, and M. V. Prokof’ev. "Effect of the regimes of selective laser melting on the structure and physicomechanical properties of cobalt-base superalloys." Physics of Metals and Metallography 116, no. 6 (2015): 601–5. http://dx.doi.org/10.1134/s0031918x15060101.

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33

Naalchian, Mojtaba, Masoud Kasiri-Asgarani, Morteza Shamanian, et al. "Phase Formation during Heating of Amorphous Nickel-Based BNi-3 for Joining of Dissimilar Cobalt-Based Superalloys." Materials 14, no. 16 (2021): 4600. http://dx.doi.org/10.3390/ma14164600.

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Phase transformations and the melting range of the interlayer BNi-3 were investigated by differential scanning calorimetry, which showed three stages of crystallization during heating. There were three exothermic peaks that indicated crystallization in the solid state. The cobalt-based X-45 and FSX-414 superalloys were bonded with interlayer BNi-3 at a constant holding time of 10 min with bonding temperatures of 1010, 1050, 1100, and 1150 °C using a vacuum diffusion brazing process. Examination of microstructural changes in the base metals with light microscopy and scanning electron microscopy
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34

Liang, Zhida, Mathias Göken, Uwe Lorenz, et al. "Influence of small amounts of Si and Cr on the high temperature oxidation behavior of novel cobalt base superalloys." Corrosion Science 184 (May 2021): 109388. http://dx.doi.org/10.1016/j.corsci.2021.109388.

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35

Zhang, Yi, Huadong Fu, Xiaozhou Zhou, Yuheng Zhang та Jianxin Xie. "Effects of aluminum and molybdenum content on the microstructure and properties of multi-component γ′-strengthened cobalt-base superalloys". Materials Science and Engineering: A 737 (листопад 2018): 265–73. http://dx.doi.org/10.1016/j.msea.2018.09.058.

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36

Wang, Y. Q., and G. Sayre. "Synthesis of simple and platinum-modified aluminide coatings on cobalt (Co)-base superalloys via a vapor phase aluminizing process." Surface and Coatings Technology 203, no. 3-4 (2008): 256–63. http://dx.doi.org/10.1016/j.surfcoat.2008.08.072.

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37

Nathal, M. V., and L. J. Ebert. "The influence of cobalt, tantalum, and tungsten on the elevated temperature mechanical properties of single crystal nickel-base superalloys." Metallurgical Transactions A 16, no. 10 (1985): 1863–70. http://dx.doi.org/10.1007/bf02670373.

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38

Zhou, Xiaozhou, Huadong Fu, Yi Zhang, Huan Xu та Jianxin Xie. "Effect of Al and W Contents on the Solidification and Solution Microstructure of Novel γ / γ ′ Cobalt‐Base Superalloys". Advanced Engineering Materials 21, № 12 (2019): 1900641. http://dx.doi.org/10.1002/adem.201900641.

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39

Ma, Chunmei, Songting Yang, Yuheng Zhang, Kaikun Wang, and Huadong Fu. "Effects of temperature and Ti addition on high-temperature oxidation behaviors of Co-Al-W based superalloys." Anti-Corrosion Methods and Materials 67, no. 5 (2020): 445–51. http://dx.doi.org/10.1108/acmm-04-2020-2298.

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Purpose Due to the special service environment of superalloys, this paper aims to obtain effects of temperature and Ti addition on high temperature oxidation behavior of Co-Al-W-B alloys. Design/methodology/approach Isothermal oxidation experiment of Co-Al-W-based alloys were carried out at 800°C, 900°C and 1000°C for different times (3, 5, 10, 20, 50 and 100 h) referring to the method of HB5258-2000. Oxidation weight gain curves and oxidation products were detected. Findings The results showed that the average oxidation rates of Co-Al-W-B alloy at 800 °C and 900 °C were 0.489 g·m−2·h−1 and 0.
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40

Jonšta, Petr, Irena Vlčková, Zdenĕk Jonšta, and Mariusz Król. "Material Analysis of the Extended-Life Cobalt-Based Superalloys Used in the Manufacturing of Glass Tools." Solid State Phenomena 270 (November 2017): 21–26. http://dx.doi.org/10.4028/www.scientific.net/ssp.270.21.

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Cobalt-based superalloys are among the most important materials for application in the demanding conditions of the glass industry. These superalloys with extended life are due to their excellent heat-resistant properties an important part of glass tools, especially of spinning discs. In the submitted paper, a material analysis of the commercially produced cast cobalt superalloy for spinning discs, including metallographic analysis supplemented by an electron X-ray analysis of minority phases, is carried out. An assessment of harmful gases, in particular oxygen and nitrogen, has also been carri
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41

A. Saleh, Khudhur, Mahmood A. Hamood, and Nawfal Y. Jahmeel. "EFFECT OF HOT CORROSION AND OXIDATION ON COBALT - BASE SUPERALLOYS COATED BY ALUMINUM WITH PRESENCE OF THERMAL BARRIER ZRO2 AND MIXTURE OF (NACL) AND (NA2SO4) STEAMSALTSAT HIGH TEMPERATURES." International Journal of Advanced Research 9, no. 07 (2021): 954–69. http://dx.doi.org/10.21474/ijar01/13198.

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The aim of the study was to investigate the Mechanisms properties of thermal barrier coatings (TBCs) to enhance of performance evaluation characteristics and develop TBCs.Cobalt –base superalloy has been used as a substrate and zirconium stabilized Aluminum as ceramic topcoat , in addition the study include degradation behavior of system during thermal cycling (3hr per cycle in furnace) the failure of the aluminized was due to thermally grown oxide (TGO) interface. The fractures propagatethrough the interface and produce a deformation of the bond coating . the effect of cycle will result
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42

Ruzuqi, Rezza, Drs Djony Izak Rudyardjo, M.Si., and Andi Hamim Zaidan, S.Si., M.Si., Ph.D. "Synthesis and Characterization of Nickel-Based Superalloy Materials for Manufacturing Aircraft Turbine Blades." Indonesian Applied Physics Letters 2, no. 2 (2021): 49. http://dx.doi.org/10.20473/iapl.v2i2.31557.

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The research has been conducted to manufacture nickel-based Superalloy materials. The purpose of this research was to find out the effects of variation of nickel composition on physical and mechanical properties of the Superalloy materials and find out the appropriate composition of Superalloy materials as materials for turbine blades. This research used nickel, cobalt, chromium, molybdenum, aluminium, and titanium commercial. The results showed that with more addition of nickel composition, the density and hardness values increased. This research showed that nickel-based Superalloy material 5
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43

Bezold, A., N. Volz, F. Xue, C. H. Zenk, S. Neumeier та M. Göken. "On the Precipitation-Strengthening Contribution of the Ta-Containing Co3(Al,W)-Phase to the Creep Properties of γ/γ′ Cobalt-Base Superalloys". Metallurgical and Materials Transactions A 51, № 4 (2020): 1567–74. http://dx.doi.org/10.1007/s11661-020-05626-2.

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44

Berthod, Patrice, Merzouk Bouaraba, and Junfu Cai. "Influence of the Chromium Content on the Characteristics of the Matrix, the Tantalum Carbides Population, and the Hardness of Cast Co(Cr)-0.4C-6Ta Alloys." Micro 3, no. 1 (2023): 239–55. http://dx.doi.org/10.3390/micro3010017.

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The mechanical and chemical behaviors of cast cobalt-base superalloys are governed by the carbides and by a reactive element, which is often chromium. The content of this later element, which is efficient in resisting hot oxidation and also hot corrosion, may have consequences on the melting temperature, microstructure, and mechanical properties at high temperatures and at room temperature. Seemingly, the effect of chromium content on the microstructure and properties of cast equi-axed Co-Cr-Ta-C superalloys containing TaC as single reinforcing carbide and in high-enough quantities to achieve
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45

Liu, Xingjun, Yunwei Pan, Yuechao Chen та ін. "Effects of Nb and W Additions on the Microstructures and Mechanical Properties of Novel γ/γ’ Co-V-Ti-Based Superalloys". Metals 8, № 7 (2018): 563. http://dx.doi.org/10.3390/met8070563.

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Microstructures, elemental partition behavior, phase stabilities and mechanical properties of Nb- and W-containing Co-V-Ti-based superalloys were investigated. Elemental partition coefficients (KX = Cγ’/Cγ) of Nb and W in Co-V-Ti-based superalloys are 2.07 and 1.10, respectively. The γ’ solvus temperatures are determined as 1023 °C, 1055 °C and 1035 °C in Co-12V-4Ti, Co-10V-4Ti-2Nb and Co-10V-4Ti-2W alloys, which are higher than those of Co-9Al-9W alloy (1000 °C). The mass densities of quaternary Co-10V-4Ti-2Nb and Co-10V-4Ti-2W alloys are about 8.31 and 8.50 g·cm−3, respectively, which are 15
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46

Lei, Yan, Chenglin Li, and Liang Wan. "High-Temperature Tensile Properties of a Cobalt-Based Co-20Cr-15W-10Ni Superalloy with a Bimodal Grain Structure." Crystals 13, no. 2 (2023): 232. http://dx.doi.org/10.3390/cryst13020232.

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Cobalt-based superalloys are common materials for the manufacturing of various components used in aerospace applications. Conventional cobalt-based superalloys with a unimodal grain structure generally exhibit low strength and ductility at high temperatures. A bimodal grain structure of a cobalt-based superalloy, Co–20Cr–15W–10Ni (CCWN), was designed to achieve both high strength and ductility at high temperatures. The deformation behavior and tensile properties of a CCWN alloy with unimodal fine-grain (FG), coarse-grain (CG), and bimodal (FG/CG) structures were investigated at 900 °C. The mic
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47

Niki, Takahiro, Kazuhiro Ogawa, and Tetsuo Shoji. "Segregation of Alloying Elements of Directionally Solidified Nickel Based Superalloy CM247LC during Creep Degradation Process." Key Engineering Materials 353-358 (September 2007): 537–40. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.537.

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The mechanism of the degradation process of nickel based superalloy CM247LC under creep loading was analyzed by considering the microscopic chemical composition of the material such as phase boundary of γ and γ’ phases. In this study, a Directionally Solidified (DS) nickel-based superalloys CM247LC was used as test specimens. The creep test was performed at 900oC under an uni-axial stress of 216 MPa. Each specimen was creep ruptured and interrupted at different hours and then analyzed. The change of chemical composition around the interface analyzed precisely by used Auger Electron Spectroscop
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48

Xi, Shengkun, Jinxin Yu, Longke Bao, et al. "Machine learning-accelerated first-principles predictions of the stability and mechanical properties of L12-strengthened cobalt-based superalloys." Journal of Materials Informatics 2, no. 3 (2022): 15. http://dx.doi.org/10.20517/jmi.2022.22.

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As promising next-generation candidates for applications in aero-engines, L12-strengthened cobalt (Co)-based superalloys have attracted extensive attention. However, the L12 strengthening phase in first-generation Co-Al-W-based superalloys is metastable and both its solvus temperature and mechanical properties still need to be improved. Therefore, it is necessary to discover new L12-strengthened Co-based superalloy systems with a stable L12 phase by exploring the effect of alloying elements on its stability. Traditional first-principles calculations are capable of providing the crystal structu
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49

Zielinska, M., and J. Sieniawski. "Surface Modification and its Influence on the Microstructure and Creep Resistance of Nickel Based Superalloy René 77 / Modyfikacja Powierzchniowa Oraz Jej Wpływ Na Mikrostrukture I Wytrzymałosc Na Pełzanie Odlewów Z Nadstopu Niklu Ren´E 77." Archives of Metallurgy and Materials 58, no. 1 (2013): 95–98. http://dx.doi.org/10.2478/v10172-012-0157-6.

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Superalloy René 77 is very wide used for turbine blades, turbine disks of aircraft engines which work up to 1050°C. These elements are generally produced by the investment casting method. Turbine blades produced by conventional precision casting methods have coarse and inhomogeneous grain structure. Such a material often does not fulfil basic requirements, which concern mechanical properties for the stuff used in aeronautical engineering. The incorporation of controlled grain size improved mechanical properties. This control of grain size in the casting operation was accomplished by the contro
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50

Leni, Desmarita, Yuda Perdana Kusuma, Muchlisinalahuddin Muchlisinalahuddin, Ruzita Sumiati, and Hendri Candra Mayana. "THE IMPLEMENTATION OF PANDAS PROFILING AS A TOOL FOR ANALYZING MECHANICAL PROPERTIES DATA OF NICKEL-BASED SUPERALLOYS BASED ON ALLOY CHEMICAL COMPOSITION." International Journal of Innovation in Mechanical Engineering and Advanced Materials 4, no. 3 (2023): 86. http://dx.doi.org/10.22441/ijimeam.v4i3.19439.

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The purpose of this study is to evaluate the mechanical properties of nickel-based superalloys with variations in alloy chemical compositions using the Exploratory Data Analysis (EDA) method with the assistance of the pandas profiling library on Google Colab. In this study, data from 312 tensile tests of nickel-based superalloys were used as research samples, with alloy chemical compositions including carbon (C), manganese (Mn), silicon (Si), chromium (Cr), nickel (Ni), molybdenum (Mo), vanadium (V), nitrogen (N), niobium (Nb), cobalt (Co), tungsten (W), aluminum (Al), and titanium (Ti), as we
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