Thematische Bibliographien / Steel C60

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Auswahl der wissenschaftlichen Literatur zum Thema „Steel C60“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 11. Februar 2022

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Zeitschriftenartikel zum Thema "Steel C60"

Strobl, Susanne, Roland Haubner und Wolfgang Scheiblechner. „New Steel Combinations Produced by the Damascus Technique“. Advanced Engineering Forum 27 (April 2018): 14–21. http://dx.doi.org/10.4028/www.scientific.net/aef.27.14.

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Multilayered forged steel plates, which combine the properties of diverse steel qualities, are referred to as Damascus steels. Since the 3rd century AD blades and weapons have been produced by the Damascus technique in Europe. In this work four different steel combinations were investigated. Combining Fe with carbon steel C60 resulted in a ferritic-pearlitic microstructure. By forging two heat-treatable steels C40 and C60 martensite with an inhomogeneous carbon distribution was formed. Combining Fe with an austenitic stainless steel showed ferrite and austenite with grain boundary carbides and segregation bands. The last combination of two cold working steels K110 and K600 led to a complex microstructure with martensite, retained austenite and two special types of carbides. After metallographic preparation and using of different etchants the various microstructures were characterized by light optical microscopy and confirmed by Vicker ́s microhardness measurements. Of high interest are the interfaces and the quality of the weld between the individual steel layers. In some regions oxidation and carbon diffusion were observed.

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Xiao, Liang Li, Xiao Yu und Jian Wei Han. „Analysis on Axial Compression Bearing Capacity of Steel Reinforced Concrete Sandwich Node“. Applied Mechanics and Materials 501-504 (Januar 2014): 685–89. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.685.

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According to the limit values of axial compression ratio of steel reinforced concrete given by technical specification for steel reinforced concrete composite structure (JGJ138-2001), the axial force of steel reinforced concrete sandwich nodes calculated by MIDAS and the axial bearing capacity calculated by limit values of axial compression ratio are compared with an actual project. The results show that steel concrete columns with designed strength of C60, the strength more than of column concrete strength higher than C50 is the least requirement as to meet the axial compression ratio. The result provides a theoretical basis for the future of safety work and the sandwich joint construction.

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Zheng, Yuanxun, Xiaolong Wu, Guangxian He, Qingfang Shang, Jianguo Xu und Yikai Sun. „Mechanical Properties of Steel Fiber-Reinforced Concrete by Vibratory Mixing Technology“. Advances in Civil Engineering 2018 (12.07.2018): 1–11. http://dx.doi.org/10.1155/2018/9025715.

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As a kind of important engineering material, steel fiber-reinforced concrete was used widely in civil engineering. Up to now, steel fiber-reinforced concrete was usually produced by the traditional mixing method. For the reason of uniform distribution of fiber, the reinforcement of mechanical properties of concrete was inadequately performed. In this paper, C50 steel fiber-reinforced concrete and C60 steel fiber-reinforced concrete were manufactured by traditional mixing and vibratory mixing methods, respectively, and then, the cube compression test, flexural test, splitting tensile test, and the bending test were carried out. The reinforcement effects of mechanical properties were analyzed by comparing the traditional mixing and vibratory mixing methods. The results show that vibratory mixing can effectively improve the distribution of steel fibers in concrete and can increase the density of steel fiber concrete, and therefore, it effectively improves the mechanical properties of steel fiber-reinforced concrete when compared to the traditional mixing method.

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Li, Fang Hua. „Performance Test of C60 Self-Compacting Steel Fiber Concrete“. Key Engineering Materials 871 (Januar 2021): 330–39. http://dx.doi.org/10.4028/www.scientific.net/kem.871.330.

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Self-compacting steel fiber concrete must meet the strength standard after steel fiber is added and must have good fluidity. The test results show that the addition of steel fiber to concrete will affect the fluidity of concrete. Compared with ordinary concrete, the addition of steel fiber will improve the compressive strength and flexural tensile strength of concrete to varying degrees. The mix proportion test can be carried out in stages, i.e. the mix proportion meeting all performance indexes used is determined first, then steel fiber is added and adjusted to determine the best mix proportion.

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Zhao, Wei, Jinke Tang, Ashok Puri, Ray L. Sweany, Yuxin Li und Liquan Chen. „Tribological properties of fullerenes C60 and C70 microparticles“. Journal of Materials Research 11, Nr. 11 (November 1996): 2749–56. http://dx.doi.org/10.1557/jmr.1996.0349.

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The frictional behaviors of fullerenes C60 and C70 were studied because they were speculated to be solid lubricants. For the sublimated pure C60 films on Si(001), a high friction coefficient (0.55–0.8) was observed under different loads and pin materials. For the C70 film, the friction coefficient showed a pin dependence, which changed from 0.5 with an Al2O3 pin to about 0.9 with a 440 stainless steel pin. The relatively high friction coefficients of C60 and C70 films were due to the tendency of the C60 and C70 particles to clump and compress into high shear strength layers rather than due to the impurities in the fullerenes. The benzene-solvated C60 · 4C6H6 and C70 ·xC6H6 showed a lowered friction coefficient (0.25 for C60 · 4C6H6 and 0.3 for C70 · xC6H6), which might result from the lowered shear strength of the hcp structure of C60 · 4C6H6 and C70 ·xC6H6 molecular crystals in which the benzene molecules were intercalated.

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Lv, Jing, Tianhua Zhou, Qiang Du, Kunlun Li und Liangwei Jin. „Research on the Bond Behavior of Preplaced Aggregate Concrete-Filled Steel Tube Columns“. Materials 13, Nr. 2 (09.01.2020): 300. http://dx.doi.org/10.3390/ma13020300.

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In order to investigate the bond behavior of preplaced aggregate concrete-filled steel tube (CFT-PAC) columns and the difference of bond behavior between CFT-PAC columns and normal concrete-filled steel tube (CFT-NC) columns, a total of 11 columns were prepared and the push-out tests were conducted. The experimental parameters included the type of concrete (preplaced aggregate concrete and normal concrete), concrete strength (C40, C50 and C60), cross-section dimension (D = 219 mm, 299 mm and 351 mm) and the thickness of steel tube (t = 6 mm and 8 mm). The results indicated that the CTF-PAC columns had a similar load-slip curves with CFT-NC columns. The bond stresses of the CFT-PAC columns were higher than that of the PAC-NC columns at the same concrete strength. Increasing compressive strength of PAC increased the critical bond strength and bond strength of CFT-PAC columns. With an increase of the L/D ratio, both of the slip corresponding to peak load and bond strength of CFT-PAC columns exhibited an increasing trend. A rise in the D/t ratio led to a decrease in the bond stress of CFT-PAC columns and an increase in slip corresponding to the peak load of CFT-PAC columns. The proposed bond stress–slip relationship model considerably matched the bond stress–slip relationship of CFT-PAC columns.

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Uhlmann, E., S. Thom, L. Prasol, K. Haberbosch und S. Drieux. „Elektromechanisches Glattwalzen von Stahllegierungen*/Electromechanical burnishing of steel alloys. Principal investigation of electromechanical burnishing of steel alloys“. wt Werkstattstechnik online 109, Nr. 07-08 (2019): 598–604. http://dx.doi.org/10.37544/1436-4980-2019-07-08-88.

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Das elektromechanische Glattwalzen (EMG) beschreibt ein Umformverfahren, welches aufgrund des zusätzlich durch das Werkstück fließenden Stroms ein kombiniertes Fertigungsverfahren darstellt. Der Stromfluss induziert, bedingt durch den Ohmschen Widerstand R, in der oberflächennahen Randschicht des Werkstücks einen Wärmeeintrag. Hieraus resultiert eine temperaturbedingte Abnahme der Dehngrenze beziehungsweise Streckgrenze sowie der Zugfestigkeit im Werkstück. Der nachgelagerte Umformprozess durch eine Glattwalzrolle erfolgt somit bei einem lokal erhöhten Formänderungsvermögen. Im Beitrag wird das Potenzial des EMG für die Bearbeitung der Stahllegierungen C60 und 41Cr4 aufgezeigt.   Electromechanical burnishing (EMG) is a further development of burnishing (MG). By joining a forming process (MG) with an electrical current, EMG results in a combined manufacturing process. Due to the heating process – induced by current flow – an increased material formability occurs in the forming zone. In this paper, the influence of EMG on the surface and metallographic properties of the steel alloys C60 and 41Cr4 is analyzed.

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Wang, Yu Dong, und Xiao Chun Fan. „Experimental Research on Physical and Mechanical Properties of Steel Fiber High-Strength Concrete“. Advanced Materials Research 168-170 (Dezember 2010): 1061–64. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1061.

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Based on experiment, the mix proportion matching with the design and construction requirements is obtained. It meets with the requirement of pump structure on the basis of meeting the strength requirement. On this basis, the basic physical and mechanical performance is studied and the conclusion is that steel fiber high-strength concrete has excellent resistance to splitting, bending and drying shrinkage. The splitting strength and bending strength of steel fiber high-strength concrete named CF60-2 is respectively 38.7% and 56.8% higher than that of plane concrete named C60. The drying shrinkage rate of CF60-2 is 45.5% lower than that of C60 in three days. The results have an important guiding significance to steel fiber high-strength concrete in theoretical and engineering practice.

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Wang, Hai Yang, Pei Yan Huang, Xiao Hong Zheng und Xin Yan Guo. „Thermal Fatigue Performance of Steel Fiber Reinforced Polymer High Strength Concrete“. Applied Mechanics and Materials 174-177 (Mai 2012): 1060–66. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1060.

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To discover the fatigue behavior and durability of the new type fiber concrete named “steel fiber reinforced polymer high strength concrete (SFPHC)”, considering climatic conditions in Guangdong Province, using research method of theoretical analysis combined with experimental study, thermal fatigue behavior of SFPHC used in bridge superstructure in three different temperatures (20°C，50°C，80°C) is discussed and compared with concrete C60 which has similar static mechanical properties at room temperature. The results show that the thermal fatigue performance of SFPHC can be described effectively with the proposed computing formula, and the fatigue performance has been greatly enhanced compared with the C60 concrete.

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Gupta, B. K., Bharat Bhushan, C. Capp und J. V. Coe. „Materials characterization and effect of purity and ion implantation on the friction and wear of sublimed fullerene films“. Journal of Materials Research 9, Nr. 11 (November 1994): 2823–38. http://dx.doi.org/10.1557/jmr.1994.2823.

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In previous studies, sublimed C60-rich fullerene films on silicon, when slid against a 52100 steel ball under dry conditions, have exhibited low coefficient of friction (∼0.12). Films with different purities can be produced by sublimation at different substrate temperatures. In this paper, effects of purity of fullerene films and ion implantation of the films with Ar ions on the friction and wear properties of sublimed fullerene films are reported. C60-rich films (called here films with high purity) exhibit low macroscale friction. An increased amount of C70 and impurities in the fullerene film determined using Raman and Fourier transform infrared (FTIR), increases its coefficient of friction. Microscale friction measurements using friction force microscopy also exhibited similar trends. Low coefficient of friction of sublimed C60-rich films on silicon is probably due to the formation of a tenacious transfer film of C60 molecules on the mating 52100 steel ball surface. Based on scanning tunneling microscopy (STM), transmission electron microscopy (TEM), and high resolution TEM (HRTEM), we found that fullerene films primarily consisted of C60 molecules in a fcc lattice structure. Nanoindenter was used to measure hardness and elastic modulus of the as-deposited films. Ion-implantation with 1 × 1016 Ar+ cm−2 reduced macroscale friction down to about 0.10 from 0.12 with an increase in wear life by a factor of 4; however, doses of 5 × 1016 ions cm−2 gave three times higher friction and poorer wear life; higher doses disintegrated the C60 molecules. Based on STM, TEM, Raman, FTIR, and laser desorption Fourier-transform ion cyclotron resonance mass spectrometer (LD/FT/ICR) studies, we found that the ion implantation with a dose of 1 × 1016 Ar+ cm−2 resulted in smoothening of the fullerene film surface probably by compacting clusters, but without disintegrating the C60 molecules. However, a high dose of 5 × 1016 Ar+ cm−2 damaged the C60 molecules, converting it to an amorphous carbon. Nanoindentation studies show that ion implantation with a dose of 1 × 1016 Ar+ cm−2 resulted in an increase in the hardness from about 1.2 to 4.0 GPa and in elastic modulus from about 70 to 75 GPa and modified the elastic-plastic deformation behavior.

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Dissertationen zum Thema "Steel C60"

Moravec, Zdeněk. „Výroba těla granátu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445161.

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The diploma thesis deals with the technology of production of the body of an artillery shell caliber 155 mm from C60 steel. The part is manufactured in series of 100,000 pieces. Based on a literature study and materials, a technological procedure of drop forging was designed, taking into account the specific shape of the forging. The volume of the starting blank and the forming force were determined. A suitable forming machine was selected based on the magnitude of the forming force. The design of tools for punching operations and reduction diameters of sets of rollers for forging stretching was also performed. In the technical and economic evaluation, the material costs for the production of the entire series were quantified.

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Vlach, Jan. „Vliv svařovacích parametrů na kvalitu a mechanické vlastnosti svarového spoje“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402552.

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The Master´s thesis focuses on the possibilities of using MAG welding on carbon steel 1.1221(C60E) without using preheating. It researches the effect of basic welding parameters on the final characteristics with the goal being to find a welding seam without defects, without using preheating.

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Yahiaoui, Houda. „Effet de l'espacement interlamellaire sur le comportement sous chargements monotone et cyclique de l'acier perlitique C70“. Phd thesis, Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. http://pastel.archives-ouvertes.fr/pastel-01062071.

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L'effet de l'espacement interlamellaire sur le comportement sous chargements monotone et cyclique de l'acier perlitique C70 a été étudié. Une démarche expérimentale conjuguant les essais de traction " in-situ " sous DRX et traction " in-situ " sous MEB couplées à une modélisation auto-cohérente a été adoptée. Les essais ont été effectués sur deux microstructures, à deux espacements interlamellaires différents. Il a été montré que l'écoulement plastique de la perlite est contrôlé par celui de la ferrite lequel est gouverné par l'espacement interlamellaire, il en est de même pour les distributions des contraintes résiduelles. La modélisation auto-cohérente met en évidence l'anisotropie élastique à l'échelle des phases et l'effet de l'espacement interlamellaire sur les rigidités et les limites d'écoulement directionnelles. L'analyse microstructurale des mécanismes de déformation montre que la déformation plastique de la perlite est caractérisée par le développement de bandes de cisaillement. Ces bandes sont le siège de l'amorçage des fissures par cisaillement des lamelles de cémentite pour les taux de déformation élevés. L'effet de l'espacement interlamellaire sur le comportement en fatigue giga-cyclique a été étudié par des essais de fatigue sous une fréquence de 20 KHz. Des différences de 30 MPa, pour la perlite à SP= 230 nm et de 50 MPa pour la perlite à SP= 170 nm entre les limites de fatigue conventionnelle (106cycles) et giga-cyclique (109cycles) ont été obtenues. L'effet de l'espacement interlamellaire sur le comportement en fatigue apparait peu significatif comparativement aux caractéristiques mécaniques de traction. Les limites de fatigue giga-cycliques obtenues intègrent l'effet bénéfique des contraintes résiduelles stabilisées ainsi que les effets d'écrouissage induit par l'usinage et par écrouissage cyclique. L'examen des sites d'amorçage, révèle essentiellement un amorçage en surface dans le domaine méga-cyclique et mixte en surface et/ou en sous-couches dans le domaine giga-cyclique. Ces résultats peuvent être interprétés sur la base des effets des propriétés de surface stabilisées et de la microstructure. Le recours à un critère de fatigue de type Goodman permet d'identifier d'une manière qualitative la contribution des différents facteurs d'influence, ci-dessus cités, dans l'amorçage des fissures de fatigue.

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Buchteile zum Thema "Steel C60"

Spittel, M., und T. Spittel. „Steel symbol/number: C60/1.0601“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 246–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_32.

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Singh, Manpreet, Ashpreet Singh und Anant Kumar Singh. „Nanofinishing of External Cylindrical Surface of C60 Steel Using Rotating Core-Based Magnetorheological Finishing Process“. In Lecture Notes on Multidisciplinary Industrial Engineering, 53–66. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9471-4_5.

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Spittel, M., und T. Spittel. „Steel symbol/number: C10/1.0301“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 144–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_15.

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Spittel, M., und T. Spittel. „Steel symbol/number: C30/1.0528“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 222–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_28.

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Spittel, M., und T. Spittel. „Steel symbol/number: C67/1.0603“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 252–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_33.

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Wei, Deng, und Qin Xiaomei. „Development of High Heat Input Welding Offshore Steel as Normalized Condition“. In HSLA Steels 2015, Microalloying 2015 & Offshore Engineering Steels 2015, 503–7. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119223399.ch60.

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Lee, Yong M., Sanjay Kumar und Jim Bradley. „Improvement of Thermal Efficiency in Steel Ladles“. In Proceedings of the Unified International Technical Conference on Refractories (UNITECR 2013), 345–50. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118837009.ch60.

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Berger, C., J. Granacher und Y. Kostenko. „Creep Equations for Heat Resistant Steels“. In Steels and Materials for Power Plants, 345–51. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606181.ch60.

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Krishnan, K. N., J. F. Knott und M. Strangwood. „Hydrogen Embrittlement During Corrosion Fatigue of Duplex Stainless Steel“. In Hydrogen Effects in Materials, 689–96. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118803363.ch60.

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Khatibi, P. Delshad, A. Ilbagi und H. Henein. „Microstructural Investigation of D2 Tool Steel during Rapid Solidification using Impulse Atomization“. In Supplemental Proceedings, 531–38. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062111.ch60.

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Konferenzberichte zum Thema "Steel C60"

Dubrovsky, R., und A. Titov. „Friction and Wear in the Presence of Fullerene Contained Lubricants at Boundary Conditions“. In STLE/ASME 2003 International Joint Tribology Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/2003-trib-0264.

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This work describes application of fullerenes as additives for liquid lubricants such as motor oils. Experiments include dynamic tracking of friction coefficient and weight measurements of samples before and after experiments. Friction coefficient measurements have been done on computer-controlled wear-friction testing machine, which has been developed at Surface Engineering Laboratory in NJIT. For the proposed series of experiments, this machine employs conforming disc-on-ring arrangement of rubbing bodies at boundary lubrication; sample couple is steel AISI 4340 and bronze SAE 40; nominal contact pressure ranges from 1.9 MPa to 3.7 MPa with sliding speed of 0.61 m/s. Tested lubricants were prepared on the basis of super duty motor oil SAE 10 by adding one weight percent of additives: pure C60, mixture of C60 and C70 and graphite powder. Performance comparison of fullerene contained lubricants with pure oil and oil modified by graphite powder showed that although there is no any clear difference in friction coefficient value for tested lubricants, fullerene contained lubricants decrease wear rate of rubbing bodies.

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Matthews, Wendy J., Karren L. More und Larry R. Walker. „Accelerated Oxidation of Type 347 Stainless Steel Primary Surface Recuperators Operating Above 600°C“. In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27190.

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Type 347 stainless steel has traditionally been used in the manufacture of microturbine primary surface recuperators. It has been established during the past few years that the water vapor present in the microturbine exhaust gas causes accelerated oxidation of austenitic stainless steels at operating temperatures above ∼600°C (∼1110°F), which has resulted in the replacement of austenitic stainless steels with more highly alloyed Fe-based alloys and Ni-based alloys in microturbine recuperators. The effect of water vapor on type 347 stainless steel primary surface recuperators has been studied extensively by Capstone Turbine Corporation in collaboration with Oak Ridge National Laboratory. Several recuperators exposed in a Capstone C60 MicroTurbine™ under different steady-state and cyclic operating conditions, have been microstructurally characterized. Evaluation of surface oxide scale formation and associated compositional changes has been carried out on representative sections from recuperators with operating lives ranging from ∼2,000–15,000 hours. Results from the microstructural and compositional analyses of the engine-tested recuperators illustrate the progression of accelerated oxidation of type 347 stainless steel at recuperator operating temperatures above 600°C.

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Sebastian, Jason, Jeff Grabowski und Dave Snyder. „New High Performance Gear Steels for Rotorcraft Transmission Applications (Ferrium® C61™ and Ferrium C64™)“. In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13363.

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QuesTek Innovations LLC will present an overview of its Ferrium® C61™ and Ferrium C64™ high-performance gear steels. QuesTek designed, developed and implemented these two new steels using its Materials by Design® technology, an “Integrated Computational Materials Engineering” (ICME)-type approach. Both steels are commercially available (Ferrium C61 falls under Aerospace Materials Specification [AMS] number 6517 and Ferrium C64 falls under AMS 6509) and both can significantly reduce rotorcraft weight and manufacturing costs while increasing operational robustness (including gear steel oil-out/high temperature survivability). Ferrium C61 and C64 are new high strength, secondary hardening gear steels that offer different levels of case hardness. These highly-processable steels exhibit excellent hardenability, and were explicitly designed to leverage the advantages of high-temperature vacuum carburization. Ferrium C61 (AMS 6517) exhibits both excellent surface fatigue and core properties (225 ksi yield strength, 240 ksi ultimate tensile strength, 130 ksi•?in fracture toughness), and is a good candidate for integral gear/shaft applications where maximum torque transfer with minimum weight is tantamount. Ferrium C64 (AMS 6509) exhibits excellent surface hardness (62+ HRC after vacuum carburization), with the potential for significantly better surface fatigue performance as compared to incumbent gear steels such as AISI 9310 (AMS 6265) and Pyrowear® Alloy 53 (AMS 6308). The final tempering temperatures of both C61 and C64 (482–510°C) are 200–300°C higher than most incumbent gear steels, providing excellent scoring resistance and superior thermal stability in high-temperature environments and “oil-out” emergency conditions. Rotorcraft applications underway include an evaluation of C64 by Bell Helicopter under the U.S. Army Future Advanced Rotorcraft Drive Systems (FARDS) program, and of C61 for the forward rotorshaft of Boeing’s CH-47 Chinook under a U.S. Army Small Business Innovation Research (SBIR) Phase II project.

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Matthews, Wendy J. „Additional Engine Testing of an Advanced Alloy for Microturbine Primary Surface Recuperators“. In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90068.

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HAYNES ® alloy HR-120 ® is being evaluated as a replacement for type 347 stainless steel for use in Microturbine Primary Surface Recuperators. The material has been characterized after being subjected to both steady-state and cyclic engine exposure in a Capstone C60 MicroTurbine™ operating at 100°F above the normal operating temperature. Oxide scale growth and elemental depletion has been analyzed and documented after 1,800 and 2,500 hours of exposure. A preliminary estimate of the remaining usable oxidation life has been made using a simplified parabolic model. Engine test results indicate that HR-120 has improved oxidation resistance and elemental stability.

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Li, Guilin, Di Shi und Xiaojiang Zhang. „Partial cable-stayed bridge in the application of heavy haul railway“. In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0513.

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<p>Taking the partial cable-stayed bridge with main span of 248 meters which used on the railway coal corridor from western Inner Mongolia to central China as an example. the adaptability and particularity of partial cable-stayed bridge in the span range are analyzed based on structural static analysis theory. Pylon and girder rigid fixity, pier and beam separation system is applied, H- shaped bridge towers, the double cell concrete box girder and the monofilament epoxy coating prestress strand is used in this bridge. The results indicate that stay-cables contribution to the overall stiffness value of 33%. In order to improve the structure performance of the controlling area such as cross section, bridge tower adopt the high tower type system, depth-span ratio is determined to be 1/4.35, C60 high performance concrete is applied. The main pier bearing adopts double 190000 kN large tonnage steel spherical bearings because of the heavy dead loads and the heavy live loads, using the high-performance materials and Partial sealing technique to ensure the bearing durability, stability and long service life. The structure of the bridge meets the requirements of heavy haul railway according to the analysis.</p>

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Zarini, Stefano, Barbara Previtali, Maurizio Vedani und Ludovica Rovatti. „Cracks Susceptibility Elimination in Fiber Laser Cladding of Ni-Based Alloy With Addition of Tungsten Carbides“. In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20623.

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In plastic injection molding the most critical component in terms of wear and corrosion problem is represented by the barrel-screw system. This is due to the friction of plastic on the inner part of the barrel and to contact between the screw and the inner walls of the barrel. Fiber laser cladding is a promising technique that, through deposition of powder onto a substrate increases wearproprieties and consequently lifetime of the component. In particular, cladding Ni-Cr alloy with WC is an extremely promising combination of elements for this purpose. Specifically, WC is able to increase the hardness of the deposit so that it becomes more suitable for severe wear application. On the other hand, high Cr amount contained in the Ni-based alloy, guaranties high corrosion resistance for harsh environments. Nevertheless, this combination of materials is highly susceptible to cracks. Through the optimization of process parameters and preheating temperature (250-350-450-550°C) defect free coatingsare obtained. This work presentsan investigation on fiber laser cladding of Ni based alloy (Ni40, Ni60) with addition of spherical tungsten carbides (-53+20 μm) on C60 steel substrate. Optimal conditions are evaluated through macro and a micro analysis. In the first case penetrantliquids are used to evaluate crack presence. For the second field, micro hardness was measured and microstructure if cross-sectioned samples were investigated by optical microscopy.

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Huang, Zhide, Mowen Xie und Zhenyu Xiang. „Research on mechanical properties of C30 Model Steel Fiber Reinforced Rubber Concrete“. In 5th International Conference on Civil Engineering and Transportation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/iccet-15.2015.279.

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Vasiliev, Alexandr, und Svetlana Daškevič. „ASSESSMENT OF THE DEPTH AND RATE OF CORROSION IN STEEL REINFORCEMENT OF REINFORCED CONCRETE CULVERTS“. In 11th International Conference “Environmental Engineering”. VGTU Technika, 2020. http://dx.doi.org/10.3846/enviro.2020.831.

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Based on the results of many research years on concrete carbonisation: both immediately after manufacture (using heat-moisture treatment) and in reinforced concrete elements operated for the periods of various length (in an open atmosphere); the effect of carbonisation on the change in the protective properties of concrete in relation to steel reinforcement; for determination of the dependence of the corrosion state of steel reinforcement on the degree of concrete carbonisation in the area of steel reinforcement; the obtained regression dependences of the change (by time in the cross section) of the degree of concrete carbonisation of various classes in strength, – the analysis of the time of the onset of the boundary values of the degrees of concrete carbonisation (strength classes C12/15–C30/37) for the operating conditions of the open atmosphere was performed. Based on it, the regression dependences of the time variation of the depth of corrosion damage of steel reinforcement were construed (for fixed thicknesses of the concrete protective layer). The obtained nature of dependences made it possible to offer, in a general form, the regression dependences of the depth of corrosion damage and corrosion rate of steel reinforcement for concretes (strength classes C12/15–C30/37) for operating conditions in open atmosphere.

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Quade, Ulrich. „Radiological Characterization of Steel Scrap Recycling by Melting“. In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1139.

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Abstract Recycling of slightly radioactively contaminated steel scrap from nuclear installations to waste containers, shieldings or any other components for the nuclear cycle is practice in Germany since the early 90ies. To qualify the process, characterization of the radiological inventories in metal, slag and filter dust as well as metallurgical analysis is necessary. Therefore samples from the melt, slag and filter dust are taken to be analyzed by gammaspectroscopy. Alpha and beta emitting radionuclide inventories are calculated based on the typical nuclide ratio of the nuclear facility where the scrap results from. Activity distribution factors for each radio element are empirical values based on the melting of about 10,000 t of steel scrap with various nuclide ratios. High decontamination of the metal can be achieved for uranium, thorium, plutonium, cesium and strontium, which allows free release of the metal in most cases. For Co60 — the main radionuclide in reactor scrap — the decontamination by melting is limited and in most cases the strong criteria for free release can not be yielded. Such metal can be used for manufacturing cast iron components like containers or shieldings. To manage the expected large amount of metallic waste resulting from the decommissioning of nuclear facilities recycling is well developed and accepted in Germany. By the high cost of intermediate and final storage of nuclear waste recycling is a very economical alternative (3, 4).

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Sahoo, Dillip Kumar, A. Jaswanth und D. Abhinay Varma. „A characterization study on coating geometry during deposition of AISI304 stainless steel over C40 high carbon steel using friction surfacing process“. In 3RD INTERNATIONAL CONFERENCE ON FRONTIERS IN AUTOMOBILE AND MECHANICAL ENGINEERING (FAME 2020). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034546.

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Berichte der Organisationen zum Thema "Steel C60"

Weirick, L. J. Plane Shock Generator Explosive Lens: Shock characterization of 4340 and PH13-8Mo steels, C360 brass and PZT 65/35 ferro-electric ceramic. Office of Scientific and Technical Information (OSTI), März 1994. http://dx.doi.org/10.2172/10142257.

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