Thematische Bibliographien / Steel 11 320.3

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Auswahl der wissenschaftlichen Literatur zum Thema „Steel 11 320.3“

Autor: Grafiati
Veröffentlicht am 28. Juni 2021
Zuletzt aktualisiert am 5. Februar 2022

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Zeitschriftenartikel zum Thema "Steel 11 320.3"

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Suleymanov, Sultan Khamidovich, Elman Sayad ogli Nabiev, Valery Grigorevich Dyskin, Mustafa Umerovich Djanklich, Oleg Andreevich Dudko und Natalya Aleksandrovna Kulagina. „THE STUDY OF TECHNOLOGICAL REGIMES OF HARDENING BANDAGE STEEL OF THE CONCENTRATED FLOW OF ENERGY“. Computational nanotechnology 6, Nr. 3 (30.09.2019): 11–15. http://dx.doi.org/10.33693/2313-223x-2019-6-3-11-15.

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The work is devoted to the development of technological modes of strengthening of the band steel of locomotive wheels by the method of thermal treatment with concentrated energy flow. Thermal treatment of the banding steel was carried out on a solar furnace at flow densities 320, 450 and 500 W/sm2. Quenching was carried out in air and water. Heating and cooling rates are important for quenching. If speed of cooling is less than critical speed ( V cr ≈ 50 deg/s), quenching is not observed. The hardness of the tempered steel samples after thermal treatment at a temperature of 800-1200°C and treated in water reaches ≈726 HB, that is not optimum for bandage steel.The optimum temperature for quenching the band steel is 730-780°C at a flow density of 450 W/sm2. At the heating temperature of the steel samples 730-780°C and cooling by quenching into water, the hardness of the band steel is the required value of 350-400 HB. By changing the heating temperature and cooling rate of the steel, a predetermined hardness can be controlled and obtained.
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MacDougall, Colin, Mark F. Green und Scott Shillinglaw. „Fatigue Damage of Steel Bridges Due to Dynamic Vehicle Loads“. Journal of Bridge Engineering 11, Nr. 3 (Mai 2006): 320–28. http://dx.doi.org/10.1061/(asce)1084-0702(2006)11:3(320).

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3

Popova, N. A., E. L. Nikonenko, E. E. Tabieva, G. K. Uazyrkhanova und V. E. Gromov. „Influence of surface quenching on morphology and phase composition of ferritic-pearlitic steel“. Izvestiya. Ferrous Metallurgy 63, Nr. 11-12 (03.01.2021): 915–21. http://dx.doi.org/10.17073/0368-0797-2020-11-12-915-921.

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The study was carried out by means of transmission electron microscopy on thin foils to investigate the changes in matrix morphology and phase composition occurring in ferritic-pearlitic steel of St2 grade (Russian) under plasma electrolytic surface quenching. In the original state St2 steel is a material which underwent quenching under the temperature of 890 °C (2 – 2.5 h) with cooling into warm water (30 – 60 °C) and further tempering under the temperature of 580 °С (2.5 – 3 h). Surface quenching was conducted in aqueous salt solution during 4 seconds under the temperature of 850 – 900 °C, voltage of 320 V, and current rate of 40 A. In the original state morphological components of the steel matrix were lamellar pearlite and non-fragmented and fragmented ferrite. Surface quenching resulted in the following transformations of morphology and phase composition: 1 – to martensitic transformation (morphological components are lath martensite, lamellar low-temperature and high temperature martensite), 2 – to steel self-tempering (inside all martensite crystals there are thin plate-like precipitations of cementite), 3 – to diffusion transformation γ → α and precipitation of retained austenite (γ-phase) given as thin layers along the boundaries of laths and plates of low-temperature martensite and inside all the crystals of lamellar martensite in the shape of “needles” like in twin type colonies. Surface quenching led to precipitation of special carbides of Мe23С6 phase. It was revealed that carbide precipitation is attributed primarily to decomposition of retained austenite and martensite and also to partial dissipation of cementite and, moreover, it is due to carbon removal from dislocations and the boundaries of α-phase crystals. That means that in all cases carbon from retained austenite, α-solid solution, cementite particles and defects of crystal lattice is used for the formation of special carbides.
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Popova, N. A., E. L. Nikonenko, E. E. Tabieva, G. K. Uazyrkhanova und V. E. Gromov. „Influence of surface quenching on morphology and phase composition of ferritic-pearlitic steel“. Izvestiya. Ferrous Metallurgy 63, Nr. 11-12 (03.01.2021): 915–21. http://dx.doi.org/10.17073/0368-0797-2020-11-12-915-921.

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The study was carried out by means of transmission electron microscopy on thin foils to investigate the changes in matrix morphology and phase composition occurring in ferritic-pearlitic steel of St2 grade (Russian) under plasma electrolytic surface quenching. In the original state St2 steel is a material which underwent quenching under the temperature of 890 °C (2 – 2.5 h) with cooling into warm water (30 – 60 °C) and further tempering under the temperature of 580 °С (2.5 – 3 h). Surface quenching was conducted in aqueous salt solution during 4 seconds under the temperature of 850 – 900 °C, voltage of 320 V, and current rate of 40 A. In the original state morphological components of the steel matrix were lamellar pearlite and non-fragmented and fragmented ferrite. Surface quenching resulted in the following transformations of morphology and phase composition: 1 – to martensitic transformation (morphological components are lath martensite, lamellar low-temperature and high temperature martensite), 2 – to steel self-tempering (inside all martensite crystals there are thin plate-like precipitations of cementite), 3 – to diffusion transformation γ → α and precipitation of retained austenite (γ-phase) given as thin layers along the boundaries of laths and plates of low-temperature martensite and inside all the crystals of lamellar martensite in the shape of “needles” like in twin type colonies. Surface quenching led to precipitation of special carbides of Мe23С6 phase. It was revealed that carbide precipitation is attributed primarily to decomposition of retained austenite and martensite and also to partial dissipation of cementite and, moreover, it is due to carbon removal from dislocations and the boundaries of α-phase crystals. That means that in all cases carbon from retained austenite, α-solid solution, cementite particles and defects of crystal lattice is used for the formation of special carbides.
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Kuzmak, Alexander E., N. E. Esipova und A. V. Kozheurov. „Опыт кулонометрической оценки коррозионноактивной поверхности аустенитной стали в агрессивном электролите при знакопеременной деформации“. Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 21, Nr. 2 (14.06.2019): 225–30. http://dx.doi.org/10.17308/kcmf.2019.21/760.

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Исследовано коррозионное поведение сложнолегированного сплава в растворе 3М НСl при статической деформации переменного знака. Результаты, полученные методом кулонометрической регистрации продуктов коррозии в начальный период взаимодействия металла со средой, обеспечили количественную оценку специфики растворения сплава. Полученные результаты позволили объемным методом в сочетании с методом кулонометрической регистрации продуктов коррозии разработать методологию селективной оценки коррозионного поведения многофазных сплавов в условиях агрессивной среды REFERENCES Berenshtein G. V., Dyachenko A. M., Rusanov A. I. Mekhanohimicheskij effekt rastvoreniya [Mechanochemical effect of dissolution] Report Academy of Sciences of the USSR, 1988, v. 298 (6), pp. 1402–1404. (in Russ.) Rusanov A. I., Uriev N. В., Eryukin P. V., Movchan T. G., Esipova N.E. Effect of the strain sign in corrosion under stress. Mendeleev Commun., 2004, v. 14(2), рр. 58–59. https://doi.org/10.1070/mc2004v014n02abeh001875 Rusanov A. , Ur’ev N. B., Eryukin P. V., Movchan T. G., Esipova N. E. Otkrytie effekta znaka deformacii v yavleniyah korrozii pod napryazheniem [Discovery of the sign deformation effect in stress corrosion phenomena]. Report Academy of Sciences, 2004, v. 395(3), pp. 364-366. (in Russ.) Esipova N. E., Blinov E. B., Movchan T. G., Bannykh O. Corrosion Resistance of a Bent Plate from a High-Nitrogen Nonmagnetic 05Kh22AG15N8M2F Steel in Aggressive Media. Russian metallurgy (Metally), 2007(2), pp. 148-75. Movchan T. G., Esipova N. E., Eryukin P. V., Uryev N. B., Rusanov A. I. Mechanochemical effects in processes of corrosion of metals. Russian Journal of General Chemistry, 2005, v. 75(11), pp. 1681–1686. https://doi.org/10.1007/s11176-005-0491-8 Rusanov A. I. Termodinamicheskie osnovy mekhanohimii [Thermodynamic principles of mechanochemistry]. Saint Petersburg, Nauka Publ., 2006, 221 p. (in Russ.) GOST 9.908-85. Metals and alloys. Interstate standard. (in Russ.) Kuzmak A. E., Kozheurov A. V., Efi menko L. A., Ilyukhin V. I. Kulonometricheskaya ocenka korrozii okoloshovnoj zony svarnogo shva pri deformacionnom starenii [Coulometric corrosion assessment of the heat-affected weld zone during strain aging]. Korroziya: Materialy, Zashchita, 2009(1), pp. 43–46. (in Russ.) Kuzmak A. E., Kozheurov A. V. Kulonometricheskaya ocenka skorosti korrozii uglerodistoj stali [Coulometric corrosion rate assessment for carbon steel]. Zashchita Metallov, 2004, v. 40(3), pp. 315–320. (in Russ.) Kuzmak A. E., Kozheurov A. V., Marin A. V. Coulometric evaluation of infl uence of the welding technology of 12Kh18N10T steel on welded zone corrosion. Korroziya: Materialy, Zashchita, 2005(1), pp. 43-46. (in Russ.)
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Belomyttsev, M. Yu, und V. G. Molyarov. „CREEP RESISTANCE OF FERRITIC-MARTENSITIC STEEL 16Cr12MoWSiVNbB (EP-823)“. Izvestiya. Ferrous Metallurgy 62, Nr. 4 (20.06.2019): 290–302. http://dx.doi.org/10.17073/0368-0797-2019-4-290-302.

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Base characteristics of ferritic-martensitic heat resisting steels with 12 % of chrome are parameters of their strength and creep resistance at temperatures of 600 – 750 °С. Steel 16Cr12MoWSiVNbB (EP-823) is considered as the basic material for manufacturing environments fuel rods (TVEL) of a developed reactor with natural safety of BRESTtype. In the literature, there are data about its mechanical characteristics for tensile tests in a range of temperatures of 20 – 750 °С and the limited characteristics of rupture strength. Data on its creep velocity is absent. Laws of creep of steel EP-823 were investigated on metal of three heats with weight of 3 kg. The compression tests at air were applied for cylindrical samples of 5 ÷ 6 mmat temperatures of 600 – 760 °С and stresses of 70 – 310 MPa. The base of compression tests did not exceed 11 hours. The structure after quenching and tempering consisted of tempered martensite and 6 – 12 vol. % of delta-ferrite, the grain size was less 20 μm. It is shown, that the description of creep tests results in double logarithmic (log (σ) – log (έ)) coordinates provides the best concurrence of results of approximation and experiment, than in half-logarithmic (σ – log (έ)). The analysis of parametrical dependences on Hollomon’s PS = (T/1000)[CS – log (έ) and to Larsen-Miller’s PE = (T/1000)[СE – log (σ)] has allowed to find the equations for creep velocity for the set pressure level of 100 – 220 MPa in the form of log (έ) = –19,355 + 9,17 (T/1000) log (σ) and ultimate strength of creep under the set admissions for creep velocity of 0,01 – 1 %/hour in the form of log (σ) = 4,304 – – 0,109 (T/1000) [20 – log (έ)]. Calculations of ultimate strength of creep and creep velocity on pair models and models of Hollomon (Larsen-Miller) give close results, but the preference should be given the second ones as these models consider all three varied factors. Data of control tests under the scheme of a tensile in the same conditions are cited. It is shown, that between results of tests on compression and on tensile at definition of durability characteristics, there is the linear dependence expressed by the equation σ0.2 at compression = 1.3σ0.2 at tensile. At the analysis of creep it has been established, that creep velocity for steel of one grade (09Cr12W3NbB) and for one heat at different type of loading (tensile or compression) have similar values while creep velocities for steel of one grade (EP-823), but of different heats even at one type of loading – compression, can differ substantially.
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Ushakov, I. A., V. S. Nikonova, I. V. Polynskii, L. G. Knyazeva, M. M. Polynskaya und E. A. Antsiferov. „Study on efficiency of corrosion inhibitors based on derivatives of isothiuronic salts“. Proceedings of Universities. Applied Chemistry and Biotechnology 11, Nr. 2 (04.07.2021): 326–32. http://dx.doi.org/10.21285/2227-2925-2021-11-2-326-332.

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Metals play a pivotal role in industry; their use constantly grows. It is virtually impossible to find an industrial field without the use of metals and their alloys. However, owing to the quality degradation of metal during the operational process, corrosion appears not only on its surface but also under a coating, which leads to its destruction. To avoid this, corrosion inhibitors are necessary. Organic compounds have been widely used as corrosion inhibitors. Many organic corrosion inhibitors have been developed nowadays. In the literature, organic compounds comprising N, O, S and P heteroatoms are described, which reduce corrosion rate. The organic compounds are adsorbed on the metal surface, forming a thin layer. Adsorption occurs either through electrostatic interaction or, in some cases, the formation of covalent bonds. The work aimed to study isothiuronic salts as corrosion inhibitors to evaluate their protective properties using the polarisation curves method. Objects of research were isothiuronic compounds containing two active centres separated by saturated and unsaturated carbon bonds (structures 1-3). In structures 4-7, one isothiuronic fragment has different propylene substituting groups. It has been previously shown that these compounds can act as effective brightening agents when applying nickel coatings. A model solution with a density of 1.12 g/cm3 was prepared to study the corrosion inhibitors. The corrosion inhibitor concentration was 400 mg/L. Studies have shown that the compounds with two isothiuronic moieties do not always exhibit improved properties for inhibiting metal degradation in a corrosive environment. In particular, they showed worsening of the inhibiting properties for samples made of steel 20 and identical properties for that made of steel 3.
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Sastrowiyono, Supriyono. „The Effect of the Ball Size on the Product Characteristics of Shaker HEBM to Produce Nano Particle from Bamboo Charcoal“. Journal of Energy, Mechanical, Material and Manufacturing Engineering 3, Nr. 1 (30.06.2018): 15. http://dx.doi.org/10.22219/jemmme.v3i1.5761.

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The objective of this research is to study the effect of ball size on characteristics of product of shaker high energy ball milling (HEBM) to produce nano particle from bamboo charcoal. A new shaker mechanism is developed. The characteristics of the particle are represented by particle size, surface morphology, and the substances presence in the product. Particle size analyzer (PSA) is conducted to have the particle sizes, whereas SEM and EDX are used to have surface morphology and substances presence in the products respectively. The mixtures of 11 gr of bamboo charcoal powder of 200 meshes and about 299 gr of steel ball are placed in vials. The vial is from stainless steel cylinder with 1 inch diameter and 120 mm length. The stroke of the shaker is 54 mm at increasing speed of connecting rod pulley for every 1 million cycles. The total number of cycle is 3 million. Therefore, the connecting rod speed of the first 1 million cycles is 300 rpm, the second is 333 rpm, and the third is 367 rpm. The steel ball sizes are and inch. PSA results indicate that there is no certain correlation between the steel ball size and particle size. The final shape of the particles is determined by fracture mechanism. The highest substance presence in the result is carbon and followed by silicon.
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Lee, Myeong-Hoon, Yeon-Won Kim, Seul-Gee Lee, Jae-Wook Kang, Jun-Mu Park, Kyung-Man Moon und Yun-Hae Kim. „Influence of annealing temperatures on corrosion resistance of magnesium thin film-coated electro-galvanized steel“. Modern Physics Letters B 29, Nr. 06n07 (20.03.2015): 1540015. http://dx.doi.org/10.1142/s0217984915400151.

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To improve the corrosion resistance of an electro-galvanized steel sheet, we deposited magnesium film on it using a vacuum evaporation method and annealed the films at 250–330°C. The zinc–magnesium alloy is consequently formed by diffusion of magnesium into the zinc coating. From the anodic polarization test in 3% NaCl solution, the films annealed at 270–290°C showed better corrosion resistance than others. In X-ray diffraction analysis, ZnMg 2 was detected throughout the temperature range, whereas Mg 2 Zn 11 and FeZn 13 were detected only in the film annealed at 310°C. The depth composition profile showed that the compositions of Mg at 270–290°C are evenly and deeply distributed in the film surface layer. These results demonstrate that 270–290°C is a proper temperature range to produce a layer of MgZn 2 intermetallic compound to act as a homogenous passive layer.
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Mei, Fang, Guang Zhou Sui und Man Feng Gong. „Residual Stress Analysis in Different Thickness TiN Coatings on High-Speed-Steel Substrates“. Advanced Materials Research 239-242 (Mai 2011): 2331–35. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.2331.

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TiN coatings were deposited on AISI M2 high-speed-steel (HSS) substrates by multi-arc ion plating technique. The thickness of substrate was 1.0 mm and five thicknesses of TiN coatings were 3.0, 5.0, 7.0, 9.0 and 11.0 μm, respectively. X-ray diffraction (XRD) has been used for measuring residual stresses. The stresses along five different directions (Ψ=0°, 20.7°, 30°, 37.8° and 45°) have been measured by recording the peak positions of TiN (220) reflection for each 2θ at different tilt angles Ψ. Residual compressive stresses present in the TiN coatings. Furthermore, the results revealed that the value of the residual stresses in TiN coatings was high. While the coatings thickness changed from 3 to 11 μm, the residual stresses varied from -3.22 to -2.04 GPa, the intrinsic stresses -1.32 to -0.14 GPa, the thermal stresses -1.86 to -1.75 GPa. The residual stresses in TiN coatings showed a nonlinear change. When the coatings thickness was about 8 μm, the residual stresses in TiN coatings reached to the maximum value.
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Dissertationen zum Thema "Steel 11 320.3"

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Vahala, Jiří. „Výroba krytu kloubu přívěsného vozíku“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445155.

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The project elaborated design of technology production of the trailer connecting joint from the deep drawing sheet iron 11 320. Pursuant to of the literary pursuit a problem of the deep drawing and calculation was designed progressive tool concatenate four operations. The lower ejectors are using for ejecting components. The drawing instrument especially made of non-standardised components and it is designed for use on a hydraulic press CTH 250, with nominal tensile force 250 kN. Drawing punch and drawing die are produced from alloyed instrumental steel 19 436 heat-worked according to drawing documentation. The technical and economical evaluation was focused on the forming cost, which is 2 922 893 CZK in total.
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Kos, Bohumír. „Výroba držáku klaksonu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-228938.

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The project elaborated in frame of engineering studies branch 2303T002. The project is submitting design of technology production of the part from the deep drawing sheet iron 11 320.30. Pursuant to of the literary pursuit a problem of the shearing, bending and calculation was designed manufacturing in transfer combined die, which is set on the eccentric press LEXN 100 C (producer TOMA INDUSTRIES s.r.o. Trnava), with nominal force 1000 kN. Functional parts of tool are produced of tool steel 19 436.3.
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Dušek, Otakar. „Výroba uzavřené matice objemovým tvářením“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231211.

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The diploma thesis suggests a producing plan of the cover nut using cold forming technology. The component will be made of the structural steel 11 320 5R. Size of its assumed annual production is 800 000 pieces. The best option was chosen from four suggested production versions. A wire with a diameter of 13.2 mm was designed as a semi-product. The component will be made in four forming operations. Roll forming machine TPM 8 (produced by Šmeral Brno) with a nominal force of 1000 kN was elected for the proposed manufacturing technology. Drawing documentation was elaborated, which includes drawing of the rolling tool assembly and drawing of tools for 3rd operation (backward extrusion). The results of the economic evaluation shows that the production cost of one nut is 1 CZK.
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Kosek, Lukáš. „Výroba pouzdra pružiny objemovým tvářením“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230629.

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The master’s thesis presents a concept for spring bush manufacturing made of 11 320-5R steel by cold forming. Five steps process of manufacturing is based on the literary studies and technical calculations. The multistage cold forming machine HATEBUR AKP 5-5 was chosen for selected option of forming technology. As raw material was used cylinder shape with diameter of 26 mm and length of 29 mm. The economic results fix the price of one component of 16 CZK for annual dose 250 000 pieces.
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Koukal, Vojtěch. „Výroba spojovacího čepu objemovým tvářením“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231212.

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The project of master’s thesis elaborated within engineering studies of engineering technology deals with concept of manufacturing procedure of connecting pin made of steel 11 320 5R with cold forming. Two variants of production technique were projected based on the literature study of the cold heading and cold extrusion. Selected variant, for which the technological calculation was accomplished, consists of five forming operations. Manufacture was projected for multistage automatic forming machine TPM 8-A made by manufacturer Šmeral Brno with nominal forming force 1000 kN. Tool steel 19 436 was chosen as a material of extrusion and heading tools.
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Bücher zum Thema "Steel 11 320.3"

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AWS Committee on Procedure and Performance Qualification. Standard welding procedure specification (WPS) self-shielded flux cored arc welding of carbon steel: (M-1/P-1/S-1, Group 1 or 2), 1/8 through 3/4 inch thick, E71T-11, as-welded condition. Miami, Fla: American Welding Society, 1995.

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Mcdermott, Leeanne. GamePro Presents: Sega Genesis Games Secrets: Greatest Tips. Rocklin: Prima Publishing, 1992.

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S&S Studio. Medium Sudoku Puzzle Book for Adults Volume 3: 320 Medium Puzzles Volume 3, Medium Sudoku Book for Adults to Sharpen Their Brains, 8. 5 X 11 In. Independently Published, 2020.

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Buchteile zum Thema "Steel 11 320.3"

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Theisen-Womersley, Gail. „Prevalence of PTSD Among Displaced Populations—Three Case Studies“. In Trauma and Resilience Among Displaced Populations, 67–82. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67712-1_3.

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AbstractAs explored in chapter two, displaced populations face a myriad of traumatic events, throughout the migration process. It comes as no surprise than, that two landmark, systematic meta-reviews found prevalence rates among refugee populations of 40% (Turrini et al., .International Journal of Mental Health Systems 11:51, 2017) and 30.6% (Steel et al., .JAMA 302:537–549, 2009) respectively.
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Spittel, M., und T. Spittel. „Steel symbol/number: X2CrNi19–11/1.4306“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 624–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_95.

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Spittel, M., und T. Spittel. „Steel symbol/number: X5CrNiMo19–11/1.4403“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 648–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_99.

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Spittel, M., und T. Spittel. „Steel symbol/number: X2CrNiMoN17–11–2/1.4406“. In Metal Forming Data of Ferrous Alloys - deformation behaviour, 660–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-44760-3_101.

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Yin, Feng Shi, Woo Sang Jung und Soon Hyo Chung. „Investigation on the Microstructure of an 11% Cr Martensitic Steel with Titanium“. In Solid State Phenomena, 1441–44. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1441.

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Honda, Kazuhiko, Kohsaku Ushioda und Wataru Yamada. „Nucleation of the Primary Al Phase on TiAl3 during Solidification of a Hot-Dip Zn-11%Al-3%Mg-0.2%Si Coating on Steel Sheet“. In Ceramic Transactions Series, 355–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470444214.ch37.

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Fisher, John W., und Sougata Roy. „FATIGUE DAMAGE IN STEEL BRIDGES AND EXTENDING THEIR LIFE“. In Volume 11 Number 3, 250–68. The Hong Kong Institute of Steel Construction, 2015. http://dx.doi.org/10.18057/ijasc.2015.11.3.1.

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8

Wang, Chun-sheng, Mu-sai Zhai, Lan Duan und Qian Wang. „FATIGUE SERVICE LIFE EVALUATION OF EXISTING STEEL AND CONCRETE BRIDGES“. In Volume 11 Number 3, 305–21. The Hong Kong Institute of Steel Construction, 2015. http://dx.doi.org/10.18057/ijasc.2015.11.3.5.

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9

Tao, Xiao-yan, und Yu-ling Zhang. „SERVICE LIFE EVALUATION EXPERIENCE FOR EXISTING RAILWAY STEEL BRIDGE IN CHINA“. In Volume 11 Number 3, 347–58. The Hong Kong Institute of Steel Construction, 2015. http://dx.doi.org/10.18057/ijasc.2015.11.3.8.

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10

Wang, Chun-sheng, Ben T. Yen, Hai-ting Li und Lan Duan. „FATIGUE LIFE EVALUATION OF IN-SERVICE STEEL BRIDGES BY USING BI-LINEAR S-N CURVES“. In Volume 11 Number 3, 269–82. The Hong Kong Institute of Steel Construction, 2015. http://dx.doi.org/10.18057/ijasc.2015.11.3.2.

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Konferenzberichte zum Thema "Steel 11 320.3"

1

Domae, Masafumi, Hirotaka Kawamura, Daisuke Akutagawa, Kenji Hisamune, Yosuke Katsumura und Yusa Muroya. „Corrosion Test of 304 Stainless Steel in Hydrazine and Methanol Solutions at 320°C Under Gamma-Irradiation and Gamma Radiolysis of Hydrazine and Methanol“. In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29281.

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It has been pointed out that dissolved hydrogen is one of the key factors of PWSCC (primary water stress corrosion cracking) in the primary systems of pressurized water reactors. The authors consider that application of alternative reductant for hydrogen may mitigate PWSCC. The corrosion tests of 304 stainless steels in 2 mmol dm−3 methanol solution and 2 mmol dm−3 hydrazine solution at 320 °C were carried out under γ-ray irradiation, and the corrosion environment was evaluated. Electrochemical corrosion potential (ECP) of the stainless steels was measured during the immersion tests. The ECP values were −605 mV and −643 mV vs. SHE in 2 mmol dm−3 hydrazine solution and 2 mmol dm−3 methanol solution at 320 °C, respectively. After the immersion tests, oxide films formed on the stainless steel specimens were analyzed with scanning probe microscope and X-ray diffraction. It is concluded that from the ECP measurement and comparison with previous results corrosion environment under following conditions is similar: (1) DH 1.5 ppm without irradiation, (2) methanol 2.9 ppm without irradiation, (3) hydrazine 2 mmol dm−3 under γ-ray irradiation and (4) methanol 2 mmol dm−3 under γ-ray irradiation. During the immersion tests, the test waters were sampled several times, and analyzed, in order to understand radiolysis of the methanol solution and the hydrazine solution at 320 °C. Hydrazine is decomposed predominantly through thermal decomposition, and an ammonia molecule is formed from a hydrazine molecule. Formaldehyde and ethylene glycol were detected in the methanol solution. But, carboxylates were not detected. The present results do not demonstrate oxidation of methanol to CO or CO2. It is pointed out that irradiation experiments of higher absorbed dose are necessary.
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2

Li, Qibo, Iram Lerma, Jorge Alvarado, Immanuel Edinbarough und Wayne N. P. Hung. „Characterization of Micromist for Effective Machining“. In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53632.

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This study presents wetting characteristic of several lubricants for minimum quantity lubrication (MQL) by comparing their respective contact angles on different tool and workpiece materials. The size of an airborne droplet is estimated by measuring the profile of average droplets depositing on a polished and flat glass surface. The droplet velocity field in front of a nozzle is simulated numerically, and compared against measured data using anemometry and laser particle image velocimetry techniques. A favorable contact angle of ∼5° is obtained for oil-based lubricants on titanium, stainless steel, and tungsten carbide samples. Such low contact angle is preferred over a higher contact angle of ∼30° typically found when using water-based cutting fluids. The micromist used in the study forms a conical flow of ∼ 20° in front of a coaxial nozzle. High air pressure can atomize lubricant into microdroplets with characteristics droplets of 4–11 μm in size, which are comparable with published data for microdroplet diameters. An optimum size of 3–5 μm microdroplets is preferred since airborne microdroplets below 2 μm may cause a health concern to some machine operators. When the input pressure is above 300 kPa, the air speed in front of a nozzle is at least 100 m/s (6,000 m/min) along a working distance of 20–100 mm from the nozzle tip. Since this droplet speed could be 5 times faster than the cutting speed of a diamond tool in ultrahigh speed machining, such microdroplet could penetrate the boundary layer of a fast rotating tool, adhere and wet the tool and workpiece surfaces for effective lubrication and heat removal. The axial microdroplet speed, however, is drastically reduced in the direction perpendicular to the flow due to vortices forming beyond ∼50 mm downstream from the nozzle tip. A single nozzle would be sufficient for a single point cutting tool — as in turning operation — if the working distance is short and the airstream is near the laminar regime, but multiple MQL nozzles should be utilized for a larger milling tool.
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3

Van de Water, A., R. Xhonneux und F. De Clerck. „ANTI-THROMBOTIC EFFECT IN CANINE CORONARY ARTERIES OF A COMBINED TXA2 synthetase/TXA2-prostaglandin ENDOPEROXIDE RECEPTOR INHIBITOR (R 68070)“. In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643463.

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The effects of R 68070 an oxime-alkane carboxylic acid derivative combining specific thromboxane A2 (TXA2) synthetase inhibition with TXA2/prostaglandin endoperoxide receptor blockade in one molecule, on thrombus formation in a coronary artery following electrically-induced endothelial injury and on its myocardial repercussions were examined in dogs. In an open-chest model in anaesthetized dogs, a stainless steel electrode was inserted into the left anterior descending coronary artery (LAD) distally (+ 1 cm) from an electromagnetic flow probe. ECG and heart rate were derived from limb leads. Serum TXB2 levels were measured by RIA on venous spontaneously coagulated blood (1 h, 37°C). Endothelial cell injury in the LAD coronary artery was induced by the application of an anodal current of 300 μA during 30 min; after an additional 60 min observation period, the thrombus wet weight was determined.In comparison with solvent treatment (n = 8), R 68070 (1.25 mg/kg I.V. 10 min before electrical stimulation, n = 7), significantly reduced the thrombus mass (solvent : 43 mg; R 68070 : 18 mg median value, p < 0.05), the incidence of ECG changes indicative for myocardial ischemia (fibrillation : solvent 1/8; R 68070 0/7; arrhythmias : solvent 3/8; R 68070 2/7; ST changes : solvent 7/8; R 68070 1/7, p < 0.05) and the decrease in coronary blood flow after electrical stimulation (solvent : from 13 to 6.5 ml/min; R 68070 : from 13 to 11 ml/min median values, p < 0.05). Serum TXB2 levels were reduced by 92 % at 100 min after the injection of the active compound (median value, n = 7).Heart rate and coronary blood flow measured before the induction of the endothelial injury were not modified by R 68070.The present study thus demostrates that R 68070 exerts a potent anti-thrombotic effect in canine coronary arteries. The relative contributions to this effect of TXA2 synthetase inhibition and of TXA2/prostaglandin endoperoxide receptor blockade exerted by the compound are being investigated.
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4

Zheng, Jinyang, Xiufeng Lin und Yubin Lu. „Stress Analysis of Plastic Pipe Reinforced by Cross Helically Wound Steel Wires“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93071.

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Polyethylene pipe reinforced by cross helically wound steel wires (PSP), which has excellent performance, is a new type of plastic-matrix steel composite pipe. PSP consists of three continuous layers, i.e., inner PE layer, composite layer and outer PE layer. Elastic parameters of the composite layer were obtained with series and parallel models. Solutions for elastic stresses and strains of the PSP under internal pressure, external pressure, and axial force were developed by using the three-dimensional (3-D) anisotropic elasticity. Good agreement between theoretical results and experimental data shows that the presented model can well predict stresses and strains of the PSP.
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5

Flewitt, P. E. J., G. E. Smith, G. M. Hughes und A. G. Crocker. „An Overview of 3-D Geometric Models to Describe Brittle Fracture in Polycrystalline Ferritic Steels“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93644.

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Flaws that can be present within pressure vessels, pipework and other engineering components are assessed using the principles of fracture mechanics. In general, failure avoidance methodologies are used for assessments. In these, mechanical properties and fracture toughness of the particular materials, taking account of the thermo-mechanical history, are important input parameters. In addition, however, it is necessary to support these approaches with an understanding of the underlying fracture mechanisms. In the case of lower shelf brittle fracture of ferritic materials, various approaches have been adopted to provide an understanding of the initiation and growth of these cracks. Certainly polycrystalline ferritic steels are widely used for construction of engineering components. Although a truly multiscale problem, this overview describes the key features of 3D geometric models that can be used to consider brittle fracture of a variety of polycrystalline materials, including bcc materials, in the intermediate microscale range of 10−6 to 10−3 m. Results of the modelling applied to the brittle fracture of bcc polycrystalline ferritic materials are presented, particularly with respect to predicted crack paths as an initiated crack propagates across the model. In this situation, brittle cleavage and intergranular brittle fracture are addressed. One particular application is the effect of prior grain boundary creep damage, arising from plant service history, on the subsequent lower shelf brittle fracture of ferritic steel components. The implications of this 3D modelling of polycrystalline material are discussed.
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6

Tanguy, B., J. Besson und S. Bugat. „Modelling of Irradiation Embrittlement in the Ductile to Brittle Transition Range for an A508 Pressure Vessel Steel“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93400.

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The aging behavior of structural steels used to manufacture nuclear pressure vessels is surveyed using Charpy V-notch specimens located in capsules inside the pressure vessel. The Charpy data are then used to assess the safety integrity of the structures based on semi-empirical relations relating Charpy impact transition curve shifts and the fracture toughness shifts due to irradiation. Using a computational strategy proposed in [1] which combines a deterministic model for ductile fracture and a statistical description of brittle fracture, this work aims at the prediction of the whole Charpy transition curve of irradiated steels. The actual strain hardening behavior of an A508 Cl.3 steel from the french surveillance program is considered in the simulations, contrarily to a previous work where a shift of the un-irradiated stress-strain curve to higher stress values was considered. Comparison with Charpy energy data for two levels of irradiation shows that irradiation possibly also affect brittle fracture. It is also shown that if a low increase of the yield stress is considered, the ductile fracture energy can decrease as a result of a compensation between the increase of dissipated energy due to a higher yield stress and a decrease of dissipated energy due to a faster ductile crack propagation.
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7

Becht, Charles, Tony Paulin, Don Edwards, Mark Stonehouse, William Santiago Lock und Charles Becht. „Sustained Stress Indices (SSI) in the B31.3 2010 Edition“. In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28267.

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The 2010 version of B31.3 introduced sustained stress indices (SSI’s) in paragraph 320. Using methods in references [1],[2],[3],[4],[5], and [11], a test procedure was developed to evaluate these SSI’s for standard metallic piping components. The test procedure has been incorporated into draft versions of B31J so that the sustained stress index can be produced at the same time stress intensification or flexibility factor tests are performed for a particular component. This paper describes the sustained stress index and the B31J test procedure used to determine the SSI.
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Solin, Jussi P. „Fatigue of Stabilized SS and 316 NG Alloy in PWR Environment“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93833.

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Strain controlled constant and variable amplitude fatigue tests for 316NG and Titanium stabilized stainless steels in low oxygen PWR waters were performed. The stabilized steel has been plant aged for 100 000 hours. Constant amplitude test results at 0,01 Hz sinusoidal straining comply with predicted lives according to the Fen approach for both materials. Spectrum straining both in air and in environment caused predicted life reduction factors (about 3) for the stabilized steel, but for the 316NG steel spectrum straining in environment resulted to a larger reduction in life.
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Bezdikian, Georges. „Reactor Pressure Vessel and Reactor Coolant Circuit Cast Duplex Stainless Steel Components: Contribution of the Expertise for Life Management Studies“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93403.

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The life management of French Nuclear Power Plants is a major stake from an economic and a technical point of view considering the aging management assessment of the key components of the plant. The actual life evaluation is the results of prediction of life assessment from important program of expertises for the 3-loop PWR and 4-loop PWR plants in operation. To optimize the strategic in order to achieve the best possible performance and to prepare the technical and economical choice and decision, the paper presents the association of life management strategy and the program of expertises considering: • the identification of degradation for different components and prediction criteria proposed, • the large database from cast reactor coolant and component removed from nuclear power plants and expertised to confirm the prediction, • the life evaluation of RPV with radiation surveillance program based on the expertises of irradiation capsules, it is particularly shown how the expertise is in the center of the strategic choice. The French utility has organized the life management of Nuclear Plant in function of several program of expertises of knowledge on the long term experience feedback and the maintenance program for life. This paper shows updated on RPV and reactor coolant equipments activities engaged by utility on: • periodic maintenance and volume of expertise, • Alternative maintenance actions, • Large volume of expertises and how are managed these results to predict the aging management.
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Lam, P. S., M. J. Morgan, K. J. Imrich und G. K. Chapman. „Predicting Tritium and Decay Helium Effects on Burst Properties of Pressure Vessels“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93274.

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Burst testing is used to assess the performance of stainless steel pressure vessels designed to contain tritium, a radioactive isotope of hydrogen. Burst ductility of tritium-exposed vessels is reduced in time as a result of the combined embrittlement effects from tritium that has diffused into the microstructure and its radioactive decay product, helium-3. A materials system model and finite element procedure were developed to predict burst pressure and the vessel volume change (ductility) during burst testing. The model is used to predict changes in burst pressure and ductility from the tritium service history, known values of tritium diffusivity, and published data on the effects of tritium and helium on the tensile properties of stainless steel. Good agreement has been achieved with actual burst test data for unexposed vessels. It is shown that the service history could be used to derive values of tritium concentration in the metal and the depth of penetration in the vessel sidewall. These values could be used in the finite element model to predict values of burst pressure and burst ductility for tritium-exposed vessels.
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