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Статті в журналах з теми "Nickel – Fatigue sous corrosion"

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Автор: Grafiati

Опубліковано: 9 червня 2023

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1

CHABANNE, Y., C. SARRAZINBAUDOUX, and J. PETIT. "Comportement en fatigue-corrosion et corrosion sous contrainte d'alliages de titane sous environnement gazeux a 500 �c." Annales de Chimie Science des Mat�riaux 24, no. 4-5 (1999): 377–93. http://dx.doi.org/10.1016/s0151-9107(99)80076-2.

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2

Ferney, Véronique. "Adoucissement d'un superalliage base nickel sous-vieilli en fatigue oligocyclique." Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics 329, no. 12 (December 2001): 843–50. http://dx.doi.org/10.1016/s1620-7742(01)01409-x.

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3

Hasson, D. F., C. Zanis, L. Aprigliano, and C. Fraser. "Corrosion and corrosion-fatigue behavior of IN625 Weld Surfaced 3.25 Nickel Steel." Journal of Materials for Energy Systems 7, no. 3 (December 1985): 256–64. http://dx.doi.org/10.1007/bf02833389.

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4

Mohamed, Aezeden. "Intergranular Corrosion Fatigue Fracture Surface Analysis of Nickel Alloy." Procedia Engineering 114 (2015): 754–59. http://dx.doi.org/10.1016/j.proeng.2015.08.021.

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5

Vinogradov, A. "Corrosion, corrosion sous contrainte et fatigue du cuivre à grains ultra-fins élaboré par hypercorroyage." Annales de Chimie Science des Matériaux 27, no. 3 (June 2002): 65–75. http://dx.doi.org/10.1016/s0151-9107(02)80008-3.

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6

Leibing, B., F. Von Locquenghien, D. Rückle, and G. Schellenberg. "Corrosion fatigue investigations on cast, forged and welded nickel-martensitic steels for hydro turbines." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (September 1, 2022): 012092. http://dx.doi.org/10.1088/1755-1315/1079/1/012092.

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Abstract Facing an increased demand for flexible operation of hydro power plants (HPPs), Francis runners are substantially subjected to operating conditions beyond the traditional operating ranges. In order to ensure a reliable service of major HPP components covering their complete service life, a fundamental understanding of both load and material fatigue behavior is essential. Due to the cyclic loading in water, reliable corrosion fatigue data is required for the runner fatigue assessments. In previous publications, a state-of-the-art corrosion fatigue testing campaign within a collaborative German research project was described and results for a common cast steel used for the manufacturing of hydro runners were presented. The material testing program for the 13 % Chromium and 4 % Nickel steel has advanced since then and important aspects beyond varying water qualities and different stress ratios have been investigated. Within this conference contribution, corrosion fatigue investigations that were carried out on cast, forged and welded nickel-martensitic steels are described and recently gained results are presented.

7

Hack, Harvey, Scott Olig, Erik Knudsen, Richard Link, Adelina Beckwith, and Attilio Arcari. "Fatigue and Corrosion Fatigue Properties of Additive-Manufactured Nickel Alloy 625 and Ti-6Al-4V." Materials Performance and Characterization 7, no. 1 (January 1, 2018): 20170150. http://dx.doi.org/10.1520/mpc20170150.

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8

Major, Stepan, Stepan Hubalovsky, and Josef Šedivý. "Combined Corrosion and Fatigue Degradation of Nitinol Implants." Advanced Materials Research 712-715 (June 2013): 474–77. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.474.

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Nitinol is metal alloy of nickel and titanium. It has wide range of applications. The most significant application is production of self-expanding stent-grafts, which are commonly used in vascular surgery. Stent-graft manufactures are confronted with two basic requirements: stents must have an infinite life; stents must be made of the thinnest wires us possible. Stent-graft failure or device fatigue remains major concern for stent-graft manufactures and researches. The stent-grafts are mechanically loaded, and also the device is placed in very aggressive environment. The corrosion stability of Nitinol is strongly dependent on the surface preparation: grinding, polishing, chemical etching. The paper deals with fatigue degradation of stent-grafts in corrosive environment.

9

Santarini, G., and Th Magnin. "Quantification de l’endommagement en corrosion sous contrainte et fatigue-corrosion à partir de l’analyse statistique de la multifissuration." Revue de Métallurgie 91, no. 9 (September 1994): 1218. http://dx.doi.org/10.1051/metal/199491091218.

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10

Gras, J. M., and G. Pinard-Legry. "Corrosion sous contrainte des alliages de nickel : influence des paramètres métallurgiques, chimiques et physicochimiques." Revue de Métallurgie 90, no. 9 (September 1993): 1091. http://dx.doi.org/10.1051/metal/199390091091.

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11

Gibson, G. J., K. M. Perkins, S. Gray, and A. J. Leggett. "Influence of shot peening on high-temperature corrosion and corrosion-fatigue of nickel based superalloy 720Li." Materials at High Temperatures 33, no. 3 (April 8, 2016): 225–33. http://dx.doi.org/10.1080/09603409.2016.1161945.

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12

Li, Yong, H. Cockings, P. M. Mignanelli, M. Whittaker, B. J. Cockings, R. Buckingham, and M. R. Bache. "High temperature corrosion-fatigue behavior of a shot peened nickel based superalloy." Corrosion Science 207 (October 2022): 110577. http://dx.doi.org/10.1016/j.corsci.2022.110577.

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13

Harvey, D. P., T. S. Sudarshan, M. R. Louthan, and R. E. Swanson. "Corrosion fatigue behavior of 90/10 Copper-Nickel Cladding for Marine Structures." Journal of Materials for Energy Systems 7, no. 3 (December 1985): 269–75. http://dx.doi.org/10.1007/bf02833391.

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14

Popović, Jelena, Goran Radenković, Jovanka Gašić, Aleksandar Mitić, Marija Nikolić, Radomir Barac, and Slavoljub Živković. "Ultrastructural Analysis of the Surface of Endodontic Instruments after Immersion in Irrigating Solutions." Stomatoloski glasnik Srbije 62, no. 4 (December 1, 2015): 157–65. http://dx.doi.org/10.1515/sdj-2015-0016.

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Summary Introduction Separation (fracture) of endodontic instruments in the root canal during chemomechanical instrumentation is a complication that can compromise the final outcome of endodontic treatment. One of the most common factors that cause fatigue of endodontic instruments and consequent fracture is surface corrosion. The aim of this study was to investigate the ultrastructure of surface corrosion of endodontic instruments made of stainless steel and nickel-titanium after immersion in the most commonly used root canal irrigants. Material and Methods The study included 48 nickel-titanium and stainless steel endodontic hand files. All instruments were immersed in 5.25% sodium hypochlorite, 0.2% CHX and 17% EDTA. Surface corrosion was analyzed using a scanning electron microscope (SEM). Results Nickel-titanium instruments showed significantly higher susceptibility to corrosion after immersion in 5.25% sodium hypochlorite compared to stainless steel instruments (p<0,001). After immersion in 0.2% CHX corrosion damage was observed on both nickel-titanium and stainless steel instruments but the difference was not statistically significant (p=0.096). No corrosion was observed in both types of instruments after immersion in 17% EDTA. Conclusion The use of 5.25% NaOCl and 0.2% CHX as root canal irrigating solutions can cause serious corrosion changes on the surface of nickel-titanium and stainless steel endodontic instruments.

15

Belan, Juraj. "The Fractography Analysis of IN 718 Alloy after Fatigue Test." Key Engineering Materials 635 (December 2014): 9–12. http://dx.doi.org/10.4028/www.scientific.net/kem.635.9.

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The Inconel’s alloy IN 718 has been developed by International Nickel Company in early 50-ties of 20thcentury. It is high-strength; corrosion-resistant nickel chromium material used at temperature range from-250°C up to 705°C. In this study, the high cycle fatigue (HCF) and very high cycle fatigue (VHCF) properties of IN718 superalloy with given chemical composition were investigated under push-pull high frequency fatigue test at room temperature. A S – N curve was obtained after testing. With the help of scanning electron microscope (SEM), fractography analyses were performed to disclose the fracture features of specimens in different life ranges.

16

Li, Shaolin, Xiaoguang Yang, and Hongyu Qi. "High-temperature hot-corrosion effects on the creep–fatigue behavior of a directionally solidified nickel-based superalloy: Mechanism and lifetime prediction." International Journal of Damage Mechanics 29, no. 5 (November 27, 2019): 798–809. http://dx.doi.org/10.1177/1056789519891765.

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Creep–fatigue experiments were performed at 850℃ on bare and salt-coated directionally solidified Ni-based superalloy DZ125. Experimental test results showed that the salt-coated sample exhibited lower lifetime than that of the bare sample under all stress conditions. This reduction is found to correlate directly with the higher probability of crack initiation, due to surface micro-structural degradation and higher actual stress as a result of the decrease in effective bearing area. A modified damage accumulation model considering the creep, fatigue, and hot-corrosion interaction effect was proposed to predict the corrosion–creep–fatigue lifetime. In this model, a critical high-temperature hot-corrosion exposure time was proposed and was introduced using the Miller linear damage accumulation model. The predicted lifetimes correspond remarkably well with the experimental results.

17

Allen, J. M., and G. A. Whitlow. "Observations on the Interaction of High Mean Stress and Type II Hot Corrosion on the Fatigue Behavior of a Nickel Base Superalloy." Journal of Engineering for Gas Turbines and Power 107, no. 1 (January 1, 1985): 220–24. http://dx.doi.org/10.1115/1.3239686.

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A study measuring the effects of a molten sulfate/chloride salt on the creep/fatigue behavior of a nickel base turbine blade superalloy, Udimet 720, at 1300°F (704°C) is described. Cyclic stress–cycles to failure (S-N) curves were generated at high mean stress levels, with mean stress, maximum stress, or the ratio of minimum to maximum stress (R ratio) held constant. In salt, it was found that when maximum stress is above the yield, with the cyclic component 20 percent of the maximum, failure occurs by stress corrosion fatigue in orders of magnitude less time than for corresponding loading conditions in air. It is significant, from a failure analysis point of view, that fatigue fracture is intergranular in these circumstances. Similar fatigue behavior may be expected for other nickel base alloys, however, at substantially lower maximum stresses in as much as Udimet 720 exhibits superior short time rupture strength, i.e., resistance to this form of stress corrosion, over the other blade alloys evaluated in this environment.

18

Rosier, Hollie, Karen Perkins, Andrew Girling, Jonathan Leggett, and Grant Gibson. "Factors affecting the corrosion fatigue life in nickel based superalloys for disc applications." MATEC Web of Conferences 14 (2014): 03001. http://dx.doi.org/10.1051/matecconf/20141403001.

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19

G, Sudhakar Rao, Vakil Singh, and L. K. Singhal. "In vitro corrosion fatigue behavior of low nickel high nitrogen austenitic stainless steel." Materials Science and Engineering: A 538 (March 2012): 224–30. http://dx.doi.org/10.1016/j.msea.2012.01.034.

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20

Tsai, Wen-Ta, and Chih-Hao Chou. "Corrosion fatigue crack growth behavior of nickel base alloys in sodium thiosulfate solution." Materials Science and Engineering: A 288, no. 1 (August 2000): 5–11. http://dx.doi.org/10.1016/s0921-5093(00)00905-9.

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21

Lopes, Natalia Isabel de Azevedo, Leandro de Arruda Santos, and Vicente Tadeu Lopes Buono. "Mechanical Properties of Nanoceramic Zirconia Coatings on NiTi Orthodontic Wires." Advances in Science and Technology 97 (October 2016): 147–52. http://dx.doi.org/10.4028/www.scientific.net/ast.97.147.

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Nickel-titanium (NiTi) alloys have been largely applied in biomedical devices due to their special properties of superelasticity and shape memory. Even though NiTi generally displays good corrosion resistance and biocompatibility, mechanical fatigue and fretting-corrosion resistance remain important challenges in a number of applications, since it can accelerate nickel ions releasing, that have been reported as cytotoxic, mutagenic, and allergenic. This study aims to develop an appropriate coating to help delaying crack nucleation and corrosion in NiTi alloys. Zirconia (ZrO2) coating stands as a good candidate to improve the corrosion and wear resistance of metallic substrates and, in this work, it was obtained by electrodeposition on NiTi superelastic and shape memory orthodontic wires. The surface morphology and the chemical composition of the coated samples were evaluated using scanning electron microscopy (SEM) with energy dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD), and atomic force microscopy (AFM). The mechanical response was evaluated by three-point bending tests. The results showed that the ZrO2 layer was uniform and well adhered to the NiTi subtract. Additionally, it was observed that this coating was capable of undergoing severe deformation without cracking, indicating a potential increase in fatigue resistance of the conjugate.

22

Engler, Christopher Tom, Helmuth Sarmiento Klapper, and Matthias Oechsner. "On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718." Metals 11, no. 1 (January 9, 2021): 117. http://dx.doi.org/10.3390/met11010117.

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Due to the challenging operational conditions occurring during drilling, e.g., in the oil and gas industry, the corrosion fatigue (CF) behavior of materials used in drillstring components needs to be well understood. The combination of cyclic mechanic loads and a corrosive environment can affect significantly the integrity of a material, which has to be taken into account when selecting and qualifying materials for drilling equipment. Nickel alloys such as the precipitation-hardenable alloy 718 (UNS N07718) are widely used in many industrial applications including subterranean drilling. In the present study, the fatigue and CF behavior of alloy 718 in three different metallurgical conditions was investigated. The CF behavior of the different conditions was determined using customized rotating bending machines enabling testing in a simulated drilling environment at 125 °C. Results have shown that the fatigue and CF strength of alloy 718 is affected by its microstructural particularities, for instance, the amount of strengthening phases and δ-phase.

23

Engler, Christopher Tom, Helmuth Sarmiento Klapper, and Matthias Oechsner. "On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718." Metals 11, no. 1 (January 9, 2021): 117. http://dx.doi.org/10.3390/met11010117.

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Due to the challenging operational conditions occurring during drilling, e.g., in the oil and gas industry, the corrosion fatigue (CF) behavior of materials used in drillstring components needs to be well understood. The combination of cyclic mechanic loads and a corrosive environment can affect significantly the integrity of a material, which has to be taken into account when selecting and qualifying materials for drilling equipment. Nickel alloys such as the precipitation-hardenable alloy 718 (UNS N07718) are widely used in many industrial applications including subterranean drilling. In the present study, the fatigue and CF behavior of alloy 718 in three different metallurgical conditions was investigated. The CF behavior of the different conditions was determined using customized rotating bending machines enabling testing in a simulated drilling environment at 125 °C. Results have shown that the fatigue and CF strength of alloy 718 is affected by its microstructural particularities, for instance, the amount of strengthening phases and δ-phase.

24

Giallonardo, J. D., Uwe Erb, G. Palumbo, G. A. Botton, and C. Andrei. "Internal Stresses in Nanocrystalline Nickel and Nickel-Iron Alloys." Materials Science Forum 706-709 (January 2012): 1607–11. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1607.

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Nanocrystalline metals are often produced in a state of stress which can adversely affect certain properties, e.g. corrosion resistance, wear, fatigue strength, etc. This stress is referred to as internal or “intrinsic” stress since it is not directly caused by applied loads. The structural causes of these stresses in nanocrystalline materials are not fully understood and are therefore an area of particular interest. The internal stresses of nanocrystalline Ni and Ni-16wt%Fe were measured and found to increase with the addition of iron. Characterization using HR-TEM revealed no signs of porosity, second phase particles, or a high density of dislocations. Both materials possessed well defined high-angle grain boundaries. The main structural difference between the two materials was found to be grain size and correspondingly, a decrease in grain size resulted in an increase in internal stress which supports the applicability of the coalescence theory. The current study also provides evidence to rule out the effect of voids (or porosity), dislocations, and second phases as possible causes of internal stress.

25

Cottam, Ryan, and Milan Brandt. "Development of a Processing Window for the Transformation Hardening of Nickel-Aluminium-Bronze." Materials Science Forum 654-656 (June 2010): 1916–19. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.1916.

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Nickel-Aluminium-Bronzes (NAB) are typically used in marine applications because of their good combination of corrosion resistance and strength. Even though these alloys exhibit good properties they do suffer from wear, corrosion, dealloying, cavitation corrosion-erosion or corrosion fatigue during service. Therefore methods of increasing the resistance of this class of alloy to surface sensitive damage mechanisms are desirable. Transformation hardening through laser processing offers the potential to increase the resistance of these alloys surface sensitive mechanisms of damage and increase their life. A processing window has been developed through the use of an analytical heat transfer model to determine laser processing parameters that are close to the critical temperature for surface melting. The absorption of the laser by NAB has been determined and the processing window calculated taking into account the velocity of the laser, laser spot size and type as well as laser power.

26

Curà, Francesca, Andrea Mura, and Raffaella Sesana. "Experimental investigation of fatigue and aging performance of automotive exhaust flexible couplings." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 7 (August 28, 2014): 1215–23. http://dx.doi.org/10.1177/0954406214549268.

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In this work, the mechanical strength of automotive exhaust flexible couplings subjected to thermo-mechanical fatigue and corrosion has been investigated. Five different types of flexible coupling have been considered, which is realized by four different metallic materials: three stainless steels (AISI 309, AISI 321, and AISI 321 Ti) and a nickel alloy (Incoloy 825). These components have been tested by a specific procedure developed to reproduce the real working conditions of the flexible joints (mechanical stresses, thermal stresses, and chemical attacks). The aging procedure consisting of different cycles of fatigue, heating and corrosion was performed. The performance of components was compared in terms of variation of both mechanical strength and the effect of corrosion, by means of the critical to quality approaches. The fatigue aging process presented in this work reproduced properly the real damage conditions on automotive flexible coupling, and the analysis of the critical to quality results shows that the best components for this application are those made up of Incoloy 825.

27

OKAZAKI, Shozo, Kiyoshi HASEGAWA, Shozo MATSUDA, and Hiroshi NAKAMURA. "Estimation of corrosion fatigue strength at high temperature for nickel-base heat resisting alloy." Journal of the Society of Materials Science, Japan 36, no. 400 (1987): 52–58. http://dx.doi.org/10.2472/jsms.36.52.

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28

Cockings, Hollie L., Karen M. Perkins, and Michael Dowd. "Influence of environmental factors on the corrosion-fatigue response of a nickel-based superalloy." Materials Science and Technology 33, no. 9 (March 17, 2017): 1048–55. http://dx.doi.org/10.1080/02670836.2017.1300419.

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29

Távara, S. "Influence of nickel on the susceptibility to corrosion fatigue of duplex stainless steel welds." International Journal of Fatigue 23, no. 7 (August 2001): 619–26. http://dx.doi.org/10.1016/s0142-1123(01)00018-4.

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30

Hutařová, Simona, Tomás Vlasák, Tomáš Podrábský, Jan Hakl, and Martin Juliš. "Influence of Al-Si Layer on Structure and Properties of Cast Ni-Based Superalloys." Materials Science Forum 567-568 (December 2007): 273–76. http://dx.doi.org/10.4028/www.scientific.net/msf.567-568.273.

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High-temperature constructional parts of aircraft engines and energy units are exposed to high dynamic stress (fatigue processes and creep) and various temperatures in dioxide-corrosion condition (hot corrosion, oxidation and erosion). The improvement of aero-engine and turbine efficiency is possible through the increase of temperature in front of turbine. This requires the use of heat-resistant and creep-resistant materials, especially nickel-base superalloys which resist mentioned effects for a limited period of time. A deposition of protective layers should improve hot corrosion resistance. This paper is focused on microstructure of protective layers created by codeposition of Al and Si on nickel-base superalloys INCO 713 LC and INCO 738 LC after thermal and thermal-stress exposition and on microstructure of basic materials (substrates). The contribution also shows creep tests results for both superalloys with and without a protective layer.

31

Jia, Wei Ping, Dong Ying Ju, and Akira Shimamoto. "Effects of Water Jet Peening on Fatigue Properties of SPA-H and SPCC Steel." Key Engineering Materials 324-325 (November 2006): 1229–32. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.1229.

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An experimental study of high pressure water jet peening treatment on SPA-H and SPCC steel was conducted to study the effects of cavitation impacts of high-speed water on fatigue crack initiation and propagation of notched specimens. Pull-pull fatigue tests’ condition was 350 MPa maximum stress amplitude, 0.1 stress ratio and 10Hz frequency, while in-situ observation by SEM was employed. It was found that fatigue life of water jet peening treated SPA-H specimens has been obviously elongated by comparison with specimens without this treatment. However, for SPCC steel specimens, by comparison with those without water jet peening treatment, fatigue life was a little elongated, almost the same and obviously shortened corresponding to water jet peening treatment time of 5, 10 and 15 minute, respectively. High pressure water jet caused surface corrosion for SPCC low carbon steel, while with almost the same carbon content, copper, chromium and nickel elements increased anti-corrosion properties of SPA-H steel. These resulted in the different fatigue life of SPA-H and SPCC steel. In-situ observation on the crack tips approved above analysis.

32

Balitskii, Alexander I., Yuliia H. Kvasnytska, Lyubomir M. Ivaskevych, Kateryna H. Kvasnytska, Olexiy A. Balitskii, Inna A. Shalevska, Oleg Y. Shynskii, Jaroslaw M. Jaworski, and Jakub M. Dowejko. "Hydrogen and Corrosion Resistance of Nickel Superalloys for Gas Turbines, Engines Cooled Blades." Energies 16, no. 3 (January 20, 2023): 1154. http://dx.doi.org/10.3390/en16031154.

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The paper presents the results of the analysis of the resistance to hydrogen and high-temperature salt corrosion of the developed alloy of the CM88Y type for the turbine blades of gas turbine engines for marine and power purposes in comparison with the industrial heat-resistant corrosion-resistant alloy CM88Y and the alloy for the protective coating of the SDP3-A blades. SDP3-A alloy was chosen as a reference sample, which has high hydrogen and corrosion resistance. The new heat-resistant alloy additionally contains such refractory metals as rhenium and tantalum, which are added to the composition of the alloy in order to increase operational characteristics while maintaining phase-structural stability. These are properties such as long-term and fatigue strength, characteristics of plasticity and strength at room and elevated temperatures. Therefore, the purpose of these studies was to determine the resistance to high-temperature salt corrosion of the developed alloy in comparison with the industrial heat-resistant nickel alloy and to evaluate the influence of alloying, hydrogen embrittlement of CM88Y and ZhS3DK alloys with different contents of chromium, boron, zirconium, hafnium, and yttrium were compared. The corrosion resistance of the materials was evaluated after crucible tests in a salt solution at a temperature of 900 °C for 30 h, according to the standard method. The corrosion resistances of alloys were determined by the mass loss, corrosion rate, and data from metallographic studies.

33

Maximov, Jordan, Galya Duncheva, Angel Anchev, Vladimir Dunchev, and Yaroslav Argirov. "Effect of Diamond Burnishing on Fatigue Behaviour of AISI 304 Chromium-Nickel Austenitic Stainless Steel." Materials 15, no. 14 (July 7, 2022): 4768. http://dx.doi.org/10.3390/ma15144768.

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The disadvantages of widely used austenitic stainless steels are their low hardness and relatively low fatigue strength. Conventional chemical-thermal surface treatments are unsuitable for these steels since they create conditions for inter-granular corrosion. An effective alternative is a low-temperature surface treatment, creating an S-phase within the surface layer, but it has a high cost/quality ratio. Austenitic steels can increase their surface micro-hardness and fatigue strength via surface cold working. When the goal is to increase the rotating bending fatigue strength of austenitic chromium-nickel steels, and the requirements for significant wear resistance are not paramount, diamond burnishing (DB) has significant potential to increase the fatigue strength and, based on the cost/quality ratio, can successfully compete with low-temperature chemical-thermal treatments. The main objective of this study is to establish the effect of DB on the rotating fatigue strength of AISI 304 L chromium-nickel austenitic steel. The influence of DB parameters on the surface integrity (SI) characteristics was studied. Optimal DB parameters under minimum roughness and maximum micro-hardness criteria were obtained. Rotating bending fatigue tests of the diamond burnished (in a different manner) and untreated specimens were performed. DB implemented via parameters providing maximum micro-hardness increased fatigue limit by 38% compared to untreated specimens.

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Heo, In Kang, Dong Hyun Yoon, and Jae Hoon Kim. "Low Cycle Fatigue Life Evaluation According to Temperature and Orientation in Nickel-Base Superalloy." Key Engineering Materials 814 (July 2019): 121–26. http://dx.doi.org/10.4028/www.scientific.net/kem.814.121.

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Components of gas turbines must be extremely resistant to high temperatures, high stresses, high-temperature corrosion, and erosive environments. The materials used in these environmental conditions are mainly nickel-based superalloys. In this study, the low-cycle fatigue of the nickel-based superalloy Inconel 792 was examined. The total strain range of a gas turbine between 760 °C and 870 °C was considered as the parameter representing the actual gas turbine operation. In addition, tests were performed using a trapezoidal waveform of the total strain to reflect the operation-stop conditions of a gas turbine with frequent shutdowns. The results of the fatigue test were compared with the Coffin–Manson method and energy method. The fractured surface was analyzed using a scanning electron microscope (SEM).

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Cockings, Hollie L., Karen Perkins, and Simon Gray. "Optimisation of a salt deposition technique for the corrosion-fatigue testing of nickel based superalloys." Materials at High Temperatures 35, no. 5 (September 27, 2017): 451–60. http://dx.doi.org/10.1080/09603409.2017.1380943.

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Praisarnti, Chonrada, Jeffrey W. W. Chang, and Gary S. P. Cheung. "Electropolishing Enhances the Resistance of Nickel-Titanium Rotary Files to Corrosion–Fatigue Failure in Hypochlorite." Journal of Endodontics 36, no. 8 (August 2010): 1354–57. http://dx.doi.org/10.1016/j.joen.2010.02.025.

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Pertuz, A., J. A. Chitty, H. Hintermann, and E. S. Puchi. "Corrosion-Fatigue Behavior of an Annealed AISI 1045 Carbon Steel Coated with Electroless Nickel-Phosphorus." Journal of Materials Engineering and Performance 8, no. 4 (August 1, 1999): 424–28. http://dx.doi.org/10.1361/105994999770346710.

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38

Sahu, J. K., R. K. Gupta, J. Swaminathan, N. Paulose, and S. L. Mannan. "Influence of hot corrosion on low cycle fatigue behavior of nickel base superalloy SU 263." International Journal of Fatigue 51 (June 2013): 68–73. http://dx.doi.org/10.1016/j.ijfatigue.2013.02.006.

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39

Eastham, D. R. "Electroplated Overlays for Crankshaft Bearings." Journal of Engineering for Gas Turbines and Power 115, no. 4 (October 1, 1993): 706–10. http://dx.doi.org/10.1115/1.2906763.

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Overlays of either lead-indium or lead-tin-copper are electroplated onto both lead-bronze and aluminum alloy crankshaft bearings to improve seizure resistance and conformability during the initial running-in period. In addition, both the corrosion resistance, particularly of lead-bronze, and the effective fatigue strength of the composite bearing are improved by this layer. The life of the overlay is largely dependent upon the diffusion rate of the low melting point species to the substrate. Thus, migration of either the indium or the tin will determine both the corrosion and wear rates of the overlay. Owing to the processing requirements, aluminum bearings require a nickel or copper interlayer prior to final overlaying with either of the lead alloys. For diffusion control reasons, when depositing lead-tin-copper onto lead-bronze it is usual to have a thin nickel dam to retard the formation of copper-tin intermetallics, which under given conditions may reduce the overall strength and adhesion; lead-indium does not require such a dam on lead-bronze. The principal differences between the two overlays lie in their respective fatigue and wear properties. Thus, lead-indium has a higher fatigue strength but lower wear resistance than lead-tin-copper. This paper compares these two major overlays and considers the selection criteria for the overlay employed.

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Sukach, Mykhailo, Myroslav Kindrachuk, and Valeriy Makarenko. "Research of corrosion and mechanical resistance of reinforce-ment steels designated for operation in hydraulic structures." Pidvodni tehnologii, no. 11 (October 29, 2021): 88–95. http://dx.doi.org/10.32347/uwt2021.11.1802.

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Analytical inspection showed that with a long service life of reinforced concrete structures of hydraulic structures, their individual elements such as reinforcing bars are destroyed due to insufficient fatigue and corrosion strength of the reinforcement metal. They occur mainly under the action of the main variable loads − bending, vibrations of reinforced concrete slabs, mechanical and erosion of the environment. The main causes of failure of the valve are its rupture and wear due to repeated action of force factors. The surface zone of the reinforcement in connection with concrete is especially intensively destroyed due to weak adhesion strength. The use of low-strength reinforcing steels can also be one of the reasons for the failure of reinforcement joints with concrete. Improving the corrosion and mechanical reliability of reinforced concrete structures of hydraulic structures is possible through the use of: for the manufacture of reinforcing bars which are the main power structure of reinforced concrete economically modified alloy steels, which undergo complex heat treatment and are characterized by high corrosion and fatigue properties. alternating) loads; The resistance against SCRN, VIR and corrosion-mechanical fatigue of reinforcing steels intended for the construction industry has been studied. It was found that the experimental steels, economically modified REE, copper-nickel, especially chromium niobium and vanadium meet the requirements of the International Standard NACE MR 0175-96 on chemical composition and mechanical properties, and steels of grades10HSNDA and 20F do not have a sufficiently high resistance SCRN <limits σ0.2min) and corrosion-fatigue failure, and steels of grades 20F and 06G2B showed low resistance to VIR (CLR> 6% and CTR> 3%). Therefore, it is necessary to carry out a full (100%) input control of corrosion and mechanical resistance of all materials involved in the manufacture of reinforced concrete structures for hydraulic purposes for operation in hydrogen sulfide-containing environment.

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Seaver, D. W., and A. M. Beltran. "Nickel-Base Alloy GTD-222, a New Gas Turbine Nozzle Alloy." Journal of Engineering for Gas Turbines and Power 115, no. 1 (January 1, 1993): 155–59. http://dx.doi.org/10.1115/1.2906670.

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This paper summarizes the key properties of GTD-222 (Wood and Haydon, 1989), a new cast nickel-base nozzle alloy developed by GE for use in land-based gas turbines. GTD-222 is being introduced as a replacement for FSX-414 in second and third-stage nozzles of certain machines. Presented in this paper are comparisons of the tensile, creep-rupture, and fatigue properties of GTD-222 versus FSX-414. In addition, the results of a long-term thermal stability study, high-temperature oxidation, and hot corrosion evaluation as well as weldability results will be discussed.

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Il'in, A. V., A. V. Kobzaruk, and V. P. Leonov. "Examination of the low-cycle corrosion fatigue of welded joints in a chrome-nickel-molybdenum steel." Soviet Materials Science 24, no. 3 (1988): 236–40. http://dx.doi.org/10.1007/bf00724328.

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Brooking, L., S. Gray, J. Sumner, J. R. Nicholls, and N. J. Simms. "Interaction of hot corrosion fatigue and load dwell periods on a nickel-base single crystal superalloy." International Journal of Fatigue 117 (December 2018): 13–20. http://dx.doi.org/10.1016/j.ijfatigue.2018.07.029.

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Cockings, H. L., B. J. Cockings, W. Harrison, M. Dowd, K. M. Perkins, M. T. Whittaker, and G. J. Gibson. "The effect of near-surface plastic deformation on the hot corrosion and high temperature corrosion-fatigue response of a nickel-based superalloy." Journal of Alloys and Compounds 832 (August 2020): 154889. http://dx.doi.org/10.1016/j.jallcom.2020.154889.

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45

Schroeder, R. M., and I. L. Müller. "Fatigue and corrosion fatigue behavior of 13Cr and duplex stainless steel and a welded nickel alloy employed in oil and gas production." Materials and Corrosion 60, no. 5 (December 16, 2008): 365–71. http://dx.doi.org/10.1002/maco.200805093.

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46

Rajabinezhad, Mojtaba, Abbas Bahrami, Mohammad Mousavinia, Seyed Jalil Seyedi, and Peyman Taheri. "Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant." Materials 13, no. 4 (February 18, 2020): 900. http://dx.doi.org/10.3390/ma13040900.

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This paper investigates the root cause of a failure in gas-turbine blades, made of Nimonic-105 nickel-based superalloy. The failure was reported in two blades in the second stage of a turbine-compressor of a gas turbine in the hot section. Two failed blades were broken from the root and from the airfoil. The failure took place after 20 k h of service exposure in the temperature range 700–850 °C, with the rotating speed being in the range 15,000–16,000 rpm. The microstructures of the failed blades were studied using optical/electron microscopes. Energy dispersive X-ray spectroscopy (EDS) was employed for phase identification. Results showed that failure first initiated from the root. The dominant failure mechanism in the root was concluded to be corrosion-fatigue. The failure scenario was suggested based on the results obtained.

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Yu, Hui Chen, Bin Zhong, and Xue Ren Wu. "Isothermal LCF Behaviors of a NiCrAlYSi Coated Columnar-Grained Directionally Solidified Nickel Base Superalloy." Key Engineering Materials 353-358 (September 2007): 203–6. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.203.

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The isothermal low cycle fatigue (LCF) behaviors of a directionally solidified (DS) nickel base superalloy, coated with a NiCrAlYSi coating were studied. The study concerned NiCrAlYSi coating formed by an arc-discharged physical vapor deposition (PVD) process for protection against high-temperature corrosion and oxidation of gas turbine blades. The effect of protective coating on LCF life of coating/substrate system was investigated at high temperatures and compared with uncoated alloy. The test results show that coating has no or less effect on LCF life under high strain range and the LCF life is governed by the fatigue behavior of substrate at different temperatures. However, when strain range is smaller, crack initiation and propagation are observably affected by temperature, which leads to a shorter LCF life of coating/substrate system at 500°C and a longer LCF life at 760°C or 980°C.

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Park, Dae Kyu, Yong Tak Bae, Sung Jong Choi, Young Suck Chai, and Jae Do Kwon. "The Evaluation of Fretting Fatigue Life for Inconel 600 and 690 Alloy." Key Engineering Materials 321-323 (October 2006): 703–6. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.703.

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The initial crack under fretting condition occurs at lower stress amplitude and at lower cycles of cyclic loading than that under plain fatigue condition. INCONEL alloy 600 and 690 are high–chromium nickel alloy having excellent resistance to many corrosive aqueous media and high-temperature atmospheres. In this paper, the effect of fretting damage on fatigue behavior for INCONEL alloy 600 and 690 were studied. Also, various kinds of mechanical tests such as hardness, tension and plain fatigue tests are performed. Fretting fatigue tests were carried out with flat-flat contact configuration using a bridge type contact pad and plate type specimen. Through these experiments, it is found that the fretting fatigue strength decreased about 40~70% compared to the plain fatigue strength in two materials. In fretting fatigue, the wear debris is observed on the contact surface, and the oblique micro-cracks at an earlier stage are initiated. These results can be used as basic data in a structural integrity evaluation of heat and corrosion resisting alloy considering fretting damages.

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SEIDEL, J. "Mechanical-electrochemical interactions during the corrosion fatigue of polycrystalline and monocrystalline nickel in 0.5N sulfuric acid solution." International Journal of Fatigue 16, no. 3 (April 1994): 232. http://dx.doi.org/10.1016/0142-1123(94)90061-2.

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Qi, Hong-Yu, Ji-Shen Yang, Xiao-Guang Yang, Shao-Lin Li, and Li-Qiang Ma. "Fatigue behavior of uncoated and MCrAlY-coated DS nickel-based superalloys pre-exposed in hot corrosion condition." Rare Metals 37, no. 11 (March 21, 2017): 936–41. http://dx.doi.org/10.1007/s12598-016-0867-4.

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