Relevant bibliographies by topics / Plastic deformation in metals

Academic literature on the topic 'Plastic deformation in metals'

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Published: 6 September 2023

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Journal articles on the topic "Plastic deformation in metals"

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VERLINDEN, BERT. "Severe plastic deformation of metals." Metalurgija-Journal of Metallurgy 11, no. 3 (September 30, 2005): 165–82. http://dx.doi.org/10.30544/380.

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This paper provides an introduction in the field of severe plastic deformation (SPD). First of all the main methods to produce SPD materials are discussed. In the following section, the mechanisms leading to the formation of fine grains are reviewed and the influence of changes in strain path is highlighted. During post-SPD thermal annealing, some typical microstructural changes take place. The influence of SPD and subsequent annealing on strength, ductility and superplastic properties are reviewed. Finally the paper provides a short overview of fatigue resistance and corrosion properties of those materials.
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Kim, L., J. Hofler, A. Daykin, Robert S. Averback, and Carl Altstetter. "Plastic Deformation of Nanophase Metals." Materials Science Forum 189-190 (July 1995): 367–72. http://dx.doi.org/10.4028/www.scientific.net/msf.189-190.367.

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Weertman, J. R., and P. G. Sanders. "Plastic Deformation of Nanocrystalline Metals." Solid State Phenomena 35-36 (September 1993): 249–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.35-36.249.

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Ghoshi, S. K. "The plastic deformation of metals." Journal of Mechanical Working Technology 12, no. 3 (February 1986): 388. http://dx.doi.org/10.1016/0378-3804(86)90011-2.

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Kiv, Arnold, Arkady Bryukhanov, Vladimir Soloviev, Andrii Bielinskyi, Taras Kavetskyy, Dmytro Dyachok, Ivan Donchev, and Viktor Lukashin. "Complex Network Methods for Plastic Deformation Dynamics in Metals." Dynamics 3, no. 1 (January 30, 2023): 34–59. http://dx.doi.org/10.3390/dynamics3010004.

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Plastic deformation of DC04 steel is regarded as a nonlinear, complex, irreversible, and self-organized process. The stress–strain time series analysis provided the possibility to identify areas of (quasi-)elastic deformation, plastic deformation, and necking. The latter two regions are the most informative. The area of inelastic deformation is reflected by collective, self-organized processes that lead to the formation of pores, and finally, the development of microcracks and a general crack as the cause of sample failure. Network measures for the quantitative assessment of the structural deformations in metals are proposed. Both spectral and topological measures of network complexity were found to be especially informative. According to our results, they can be used not only to classify the stages of plastic deformation, but also, they can be applied as a precursor of the material destruction process.
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Kvačkaj, Tibor, and Jana Bidulská. "From Micro to Nano Scale Structure by Plastic Deformations." Materials Science Forum 783-786 (May 2014): 842–47. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.842.

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Nowadays, the strategy for improving of mechanical properties in metals is not oriented to alloying followed by heat treatment. An effective way how to improve the mechanical properties of metals is focused on the research looking for some additional structural abilities of steels. Structural refinement is one of the ways. Refinement of the austenitic grain size (AGS) carried out through plastic deformation in a spontaneous recrystallization region of austenite, formation of AGS by plastic deformations in a non-recrystallized region of austenite will be considered as potential ways for AGS refinement. After classic methods of plastic deformations, next structure refinement can be obtained by an application of severe plastic deformation (SPD) methods.
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Zhang, Chao. "Research on Metal Elastic - Plastic Deformation." International Journal of Innovative Research in Engineering & Management 3, no. 6 (November 17, 2016): 474–76. http://dx.doi.org/10.21276/ijirem.2016.3.6.4.

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Rosochowski, Andrzej. "Processing Metals by Severe Plastic Deformation." Solid State Phenomena 101-102 (January 2005): 13–22. http://dx.doi.org/10.4028/www.scientific.net/ssp.101-102.13.

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Severe plastic deformation (SPD) is used to convert traditional coarse grain metals and alloys into ultrafine-grained (UFG) materials. UFG materials possess a number of improved mechanical and physical properties which destine them for a wide commercial use. However, any attempt to use SPD technology commercially requires a better insight into the mechanics and practicality of SPD processes. This paper looks into historical development of SPD processes and focuses on such aspects of SPD as material flow, role of hydrostatic pressure, friction, geometry of tools, billet and feeding considerations, technical feasibility, etc. The discussion of these topics sets a background for decisions concerning further research and commercialisation of SPD.
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Alden, Thomas H. "Plastic and viscous deformation of metals." Metallurgical Transactions A 16, no. 3 (March 1985): 375–92. http://dx.doi.org/10.1007/bf02814336.

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Cabibbo, Marcello, and Eleonora Santecchia. "Early Stages of Plastic Deformation in Low and High SFE Pure Metals." Metals 10, no. 6 (June 5, 2020): 751. http://dx.doi.org/10.3390/met10060751.

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Severe plastic deformation (SPD) techniques are known to promote exceptional mechanical properties due to their ability to induce significant grain and cell size refinement. Cell and grain refinement are driven by continuous newly introduced dislocations and their evolution can be followed at the earliest stages of plastic deformation. Pure metals are the most appropriate to study the early deformation processes as they can only strengthen by dislocation rearrangement and cell-to-grain evolution. However, pure metals harden also depend on texture evolution and on the metal stacking fault energy (SFE). Low SFE metals (i.e., copper) strengthen by plastic deformation not only by dislocation rearrangements but also by twinning formation within the grains. While, high SFE metals, (i.e., aluminium) strengthen predominantly by dislocation accumulation and rearrangement with plastic strain. Thence, in the present study, the early stages of plastic deformation were characterized by transmission electron microscopy on pure low SFE Oxygen-Free High Conductivity (OFHC) 99.99% pure Cu and on a high SFE 6N-Al. To induce an almost continuous rise from very-low to low plastic deformation, the two pure metals were subjected to high-pressure torsion (HPT). The resulting strengthening mechanisms were modelled by microstructure quantitative analyses carried out on TEM and then validated through nanoindentation measurements.
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Dissertations / Theses on the topic "Plastic deformation in metals"

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Valkonen, Aki Ensio. "Plastic deformation and roughness of free metal surfaces /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487330761216718.

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Cai, Minghao. "Acousto-Plastic deformation of metals by nonlinear stress waves." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1156445865.

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Siu, Kai-wing, and 蕭啟穎. "Effects on plastic deformation by high-frequency vibrations on metals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50534087.

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The effect of softening due to vibrations induced on metals has been used in many industrial processes such as forming, machining and joining. These industrial applications utilize ultrasonic vibrations in addition to quasi-static stresses in order to deform metals more easily. The phenomenon of ultrasonic softening is also called the Blaha effect or acoustoplastic effect. Besides the macro-scale softening due to ultrasonic vibrations imposed on quasi-static deformation stress, sub-micron level softening due to vibrations was also observed in nanoindentation experiments in recent years. These experiments made use of the oscillatory stresses of the vibrations provided by the continuous stiffness measurement (CSM) mode of nanoindentation. Lowering of loading and hardness data has been observed at shallow indent depths where the amplitude of vibration is relatively large. Despite the common industrial usages of acoustoplastic effect and the observation of softening in CSM mode nanoindentation, the physical principle underlying is still not well understood. For acoustoplastic effect the existing understanding is usually one in which the ultrasonic irradiation either imposes additional stress waves to augment the quasi-static applied load, or causes heating of the metal. For the softening observed in CSM mode nanoindentation, the effect is either attributed to instrumental errors or enhancement of nucleation of dislocations which makes them move faster. Investigations on the link between microscopical changes and the softening have been rare. In this thesis, indentation experiments in both macro and micro scales were performed on aluminium, copper and molybdenum samples with and without the simultaneously application of oscillatory stresses. Significant softening was observed, and the amount of softening from macro to micro scale indentation of similar displacement/amplitude ratios is similar. The deformation microstructures underneath the indents were investigated by a combination of cross-sectional microscopic techniques involving focused-ion-beam milling, transmission electron microscopy and crystal orientation mapping by electron backscattered diffraction. Electron microscopy analyses reveal subgrain formation under the vibrated indents, which implies intrinsic changes. To further give physical insight into the phenomenon, dislocation dynamics simulations were carried out to investigate the interactions of dislocations under the combined influence of quasi-static and oscillatory stresses. Under a combined stress state, dislocation annihilation is found to be enhanced leading to larger strains at the same load history. The simulated strain evolution under different stress schemes also resembles closely certain experimental observations previously obtained. The discovery here goes far beyond the simple picture that the effect of vibration is merely an added-stress one, since here, the intrinsic strain-hardening potency of the material is found to be reduced by the oscillatory stress, through its effect on enhancing dislocation annihilation. The experimental and simulation results collectively suggest that simultaneous application of oscillatory stress has the ability to enhance dipole annihilation and cause subgrain formation. The superimposed oscillatory stress causes dislocations to travel longer distances in a jerky manner, so that they can continuously explore until dipole annihilation. In addition, microscopic observations showed that subgrain formation and reduction in dislocation density generally occurred in different metals when stress oscillations were applied. These suggest that the intrinsic oscillation-induced effects of softening and dislocation annihilation are a rather general phenomenon occurring in metals with different stacking fault energies and crystal structures.
published_or_final_version
Mechanical Engineering
Doctoral
Doctor of Philosophy
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Zhang, Hao. "Energy Assisted-Surface Plastic Deformation of Hard-to-Deform Metals." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574245713905713.

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Shen, Ninggang. "Microstructure prediction of severe plastic deformation manufacturing processes for metals." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6282.

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The objective of the research presented in this thesis has been to develop a physics-based dislocation density-based numerical framework to simulate microstructure evolution in severe plastic deformation (SPD) manufacturing processes for different materials. Different mechanisms of microstructure evolution in SPD manufacturing processes were investigated and summarized for different materials under dynamic or high strain rates over a wide temperature range. Thorough literature reviews were performed to clarify discrepancies of the mechanism responsible for the formation of nanocrystalline structure in the machined surface layer under both low-temperature and high-temperature conditions. Under this framework, metallo-thermo-mechanically (MTM) coupled finite element (FE) models were developed to predict the microstructure evolution during different SPD manufacturing processes. Different material flow stress responses were modeled subject to responsible plastic deformation mechanisms. These MTM coupled FE models successfully captured the microstructure evolution process for various materials subjected to multiple mechanisms. Cellular automaton models were developed for SPD manufacturing processes under intermediate to high strain rates for the first time to simulate the microstructure evolution subjected to discontinuous dynamic recrystallization and thermally driven grain growth. The cellular automaton simulations revealed that the recrystallization process usually cannot be completed by the end of the plastic deformation under intermediate to high strain rates. The completion of the recrystallization process during the cooling stage after the plastic deformation process was modeled for the first time for SPD manufacturing processes at elevated temperatures.
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Thuramalla, Naveen. "Multiscale modeling and analysis of failure and stability during super plastic deformation -- under different loading conditions." Lexington, Ky. : [University of Kentucky Libraries], 2004. http://lib.uky.edu/ETD/ukymeen2004t00171/NAVEEN.pdf.

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Thesis (m.s.)--University of Kentucky, 2004.
Title from document title page (viewed Jan. 5, 2005). Document formatted into pages; contains x, 112p. : ill. Includes abstract and vita. Includes bibliographical references.
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Bronkhorst, Curt Allan. "Plastic deformation and crystallographic texture evolution in face-centered cubic metals." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13457.

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Volk, Gregor. "Characterisation and modelling of non-proportional plastic deformation in sheet metals." Thesis, Ulster University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685426.

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While sheet metal forming process analysis is well established, the complex material models often require experimental data that is difficult to obtain using single axis test equipment. This thesis outlines a new method in describing and determining yield and a methodology to measure multiaxial yield points. For the new yield point determination method, yielding in sheet metal aluminium alloys is critically reviewed. An intrinsic method of determining the yield point is then developed. This new method is compared with the accepted standard methods along with several alternative approaches to overcome the highlighted issues with the standard method. The new method also provides a means of determining a yield range, since all metals do not yield abruptly at a specific point. The Hill family of yield criteria are reviewed and calibration methods are compared and analysed. A new experimental method of reaching specific points on the yield surface is implemented. These different modes of deformation are achieved through the adaptation of an otherwise known test which is implemented in sheet metal aluminium alloy testing. A new test rig is developed to fit on a standard tensile test machine. The test rig controller and associated data acquisition analysis are developed with LabVIEW as a standalone system. The mathematical analysis of the data is developed and validated. A set of tests for an aluminium alloy was conducted to show the efficacy of this new form of material testing. The possibility of calibrating the Hill family of yield criteria with the new test results is investigated. Alternative data visualization methods are also implemented in order to illustrate the suitability of the new technique.
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Hoover, Luke Daniel. "Large Strain Plastic Deformation of Traditionally Processed and Additively Manufactured Aerospace Metals." University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1627570139729633.

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Kuhr, Bryan Richard. "Modeling the Role of Surfaces and Grain Boundaries in Plastic Deformation." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78704.

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In this dissertation, simulation techniques are used to understand the role of surfaces and grain boundaries in the deformation response of metallic materials. This research utilizes atomistic scale modeling to study nanoscale deformation phenomena with time and spatial resolution not available in experimental testing. Molecular dynamics techniques are used to understand plastic deformation of grain boundaries and surfaces in metals under different configurations and loading procedures. Stress and strain localization phenomena are investigated at plastically deformed boundaries in axially strain thin film samples. Joint experimental and modelling work showed increased stress states at the intersections of slip planes and grain boundaries. This effect, as well as several other differences related to stress and strain localization are thoroughly examined in digital samples with two different grain boundary relaxation states. It is found that localized stress and strain is exacerbated by initial boundary disorder. Dislocation content in the randomly generated boundaries of these samples was quantified via the dislocation extraction algorithm. Significant numbers of lattice dislocations were present in both deformed and undeformed samples. Trends in dislocation content during straining were identified for individual samples and boundaries but were not consistent across all examples. The various contributions to dislocation content and the implications on material behavior are discussed. The effects of grain boundary hydrogen on the deformation response of a digital Ni polycrystalline thin film sample is reported. H content is found to change the structure of the boundaries and effect dislocation emission. The presence of dispersed hydrogen caused a slight increase in yield strength, followed by an increase in grain boundary dislocation emission and an increase in grain boundary crack formation and growth. An atomistic nano indenter is employed to study the nanoscale contact behavior of the indenter-surface interface during nano-indentation. Several indentation simulations are executed with different interatomic potentials and different indenter orientations. A surface structure is identified that forms consistently regardless of these variables. This structure is found to affect several atomic layers of the sample. The implications of this effect on the onset of plasticity are discussed. Finally, the implementation of an elastic/plastic continuum contact solution for use in mesoscale molecular dynamics simulations of solid spheres is discussed. The contact model improves on previous models for the forces response of colliding spheres by accounting for a plastic regime after the point of yield. The specifics of the model and its implementation are given in detail. Overall, the dissertation presents insights into basic plastic deformation phenomena using a combination of experiment and theory. Despite the limitations of atomistic techniques, current computational power allows meaningful comparison with experiments.
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Books on the topic "Plastic deformation in metals"

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Veli-Tapani, Kuokkala, ed. Plastic deformation and strain hardening. Enfield, N.H: Trans Tech, 2002.

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Matěj, Bílý, ed. Cyclic deformation and fatigue of metals. Amsterdam: Elsevier, 1993.

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Vilys, Jonas. Particularies [sic] of plastic deformation of metals near surface layers: Monograph. Kaunas: "Technologija", 2003.

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Jen, Wang, Drucker Daniel C. 1918-, and International Union of Theoretical and Applied Mechanics., eds. Constitutive relations for finite deformation of polycrystalline metals: Proceedings of the IUTAM Symposium, held in Beijing, China, July 22-25, 1991. Beijing, China: Peking University Press, 1992.

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L, Raphanel J., Sidoroff F, and Teodosiu C, eds. Large plastic deformations: Fundamental aspects and applications to metal forming. Rotterdam: A.A. Balekema, 1993.

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Simpósio, de Conformação Plástica dos Metais (4th 1990 São Paulo Brazil). IV Simpósio de Conformação Plástica dos Metais: 27 e 28 de novembro de 1990, São Paulo : anais. [São Paulo]: Escola Politécnica, Universidade de São Paulo, 1990.

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1947-, Pietrzyk Maciej, ed. Huber's yield criterion in plasticity. Kraków: Akademia Górniczo-Hutnicza, 1994.

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M, Caddell Robert, ed. Metal forming: Mechanics and metallurgy. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1993.

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Hosford, William F. Metal forming: Mechanics and metallurgy. Englewood Cliffs, N.J: Prentice-Hall, 1990.

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M, Caddell Robert, ed. Metal forming. 3rd ed. New York, NY: Cambridge University Press, 2007.

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Book chapters on the topic "Plastic deformation in metals"

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Vinogradov, A., and S. Hashimoto. "Fatigue of Severely Deformed Metals." In Nanomaterials by Severe Plastic Deformation, 661–76. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch12a.

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Winther, Grethe, and Xiaoxu Huang. "Boundary Characteristics in Heavily Deformed Metals." In Nanomaterials by Severe Plastic Deformation, 321–31. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch6a.

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Voyiadjis, George Z., and Peter I. Kattan. "Coupling of damage and viscoplasticity for large deformation of metals." In Large Plastic Deformations, 345–52. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203749173-41.

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Van Swygenhoven, H., P. M. Derlet, and A. Hasnaoui. "Atomistic Modeling of Strength of Nanocrystalline Metals." In Nanomaterials by Severe Plastic Deformation, 597–608. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch11a.

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Günther, H. "Compressible Plastic Deformation of Porous Metals." In Advances in Continuum Mechanics, 58–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-48890-0_5.

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Rosochowski, Andrzej. "Processing Metals by Severe Plastic Deformation." In Solid State Phenomena, 13–22. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/3-908451-02-7.13.

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Würschum, Roland, Simone Herth, and Ulrich Brossmann. "Diffusion in Nanocrystalline Metals and Alloys - A Status Report." In Nanomaterials by Severe Plastic Deformation, 753–66. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch14a.

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Tabachnikova, E. D., V. Z. Bengus, V. D. Natsik, A. V. Podolskii, S. N. Smirnov, R. Z. Valiev, V. V. Stolyarov, and I. V. Alexandrov. "Low Temperature Strain Rate Sensitivity of Some Nanostructured Metals." In Nanomaterials by Severe Plastic Deformation, 207–12. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch3p.

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Neale, K. W., and Y. Zhou. "Behaviour of Textured FCC Sheet Metals." In Anisotropy and Localization of Plastic Deformation, 160–63. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3644-0_37.

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Lowe, Terry C., and Yuntian T. Zhu. "Commercialization of Nanostructured Metals Produced by Severe Plastic Deformation Processing." In Nanomaterials by Severe Plastic Deformation, 787–97. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527602461.ch15a.

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Conference papers on the topic "Plastic deformation in metals"

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Zerilli, Frank J., and Ronald W. Armstrong. "Constitutive relations for the plastic deformation of metals." In High-pressure science and technology—1993. AIP, 1994. http://dx.doi.org/10.1063/1.46201.

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Makarov, S. V., V. A. Plotnikov, and M. V. Lysikov. "Wave correlation of elementary deformation events during plastic deformation of metals." In ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Author(s), 2016. http://dx.doi.org/10.1063/1.4966440.

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NAIZABEKOV, Abdrakhman, Sergey LEZHNEV, Yevgeniy PANIN, Alexandr ARBUZ, Irina VOLOKITINA, and Andrey VOLOKITIN. "EFFECTIVE TECHNOLOGIES OF SEVERE PLASTIC DEFORMATION." In METAL 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/metal.2020.3465.

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GREGER, Miroslav, Stanislav RUSZ, Jiří ŠVEC, Ladislav KANDER, and Oscar KWARTENG. "SEVERE PLASTIC DEFORMATION STEEL AISI 316." In METAL 2022. TANGER Ltd., 2022. http://dx.doi.org/10.37904/metal.2022.4475.

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Khomenko, A. V., D. S. Troshchenko, K. P. Khomenko, and I. O. Solonar. "Phase diagram of metals fragmentation modes at severe plastic deformation." In 2016 International Conference on Nanomaterials: Application & Properties (NAP). IEEE, 2016. http://dx.doi.org/10.1109/nap.2016.7757264.

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Khomenko, A. V., D. S. Troshchenko, I. O. Solonar, M. A. Khomenko, and A. M. Litsman. "Phase Portraits of Metals Fragmentation Modes During Severe Plastic Deformation." In 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). IEEE, 2018. http://dx.doi.org/10.1109/nap.2018.8914890.

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Lunev, A. G., M. V. Nadezhkin, S. A. Barannikova, and L. B. Zuev. "Ultrasonic criteria of plastic deformation and fracture in structural metals." In MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2018): Proceedings of the 12th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Author(s), 2018. http://dx.doi.org/10.1063/1.5084397.

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Tretyakov, D. A., and A. K. Belyaev. "Surface effect of acoustic anisotropy during plastic deformation of metals." In MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2019): Proceedings of the 13th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5135123.

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Pe´rez-Prado, M. T., A. P. Zhilyaev, L. Jiang, M. E. Kassner, and O. A. Ruano. "Nanostructuring Pure Zr by Severe Plastic Deformation." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59022.

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Severe plastic deformation (SPD) techniques have now successfully been applied to fabricate a large number of nanostructured metals and alloys. Most studies have so far focused on fcc materials, although some studies on Ti and Mg also exist. In this work we describe the nanostructures resulting from processing pure Zr by high pressure torsion (HPT) and accumulative roll bonding (ARB).
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Razorenov, S. V., A. A. Bogatch, G. I. Kanel, A. V. Utkin, V. E. Fortov, and D. E. Grady. "Elastic-plastic deformation and spall fracture of metals at high temperatures." In The tenth American Physical Society topical conference on shock compression of condensed matter. AIP, 1998. http://dx.doi.org/10.1063/1.55496.

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Reports on the topic "Plastic deformation in metals"

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Sarafanov, G. F., and F. G. Sarafanov. ELECTRODYNAMIC MODEL OF DISLOCATION DYNAMICS IN METALS UNDER PLASTIC DEFORMATION. Journal Article published February 2020 in Bulletin of Science and Technical Development issue 150, 2020. http://dx.doi.org/10.18411/vntr2020-150-3.

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Vitek, Vaclav. Atomistic Study of the Plastic Deformation of Transition Metals and High Entropy Alloys. Office of Scientific and Technical Information (OSTI), March 2020. http://dx.doi.org/10.2172/1604998.

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Patel, Jamshed R. Electromigration-Induced Plastic Deformation in Passivated Metal Lines. Office of Scientific and Technical Information (OSTI), June 2002. http://dx.doi.org/10.2172/799100.

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4

Langdon, Terence G. Processing of Metal Matrix Composites through Severe Plastic Deformation. Fort Belvoir, VA: Defense Technical Information Center, November 2003. http://dx.doi.org/10.21236/ada422186.

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5

Denys, R. M. L51712 Fracture Behavior of Large-Diameter Girth Welds - Effect of Weld Metal Yield Strength Part II. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), May 1994. http://dx.doi.org/10.55274/r0010121.

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Fitness for purpose girth defect assessments assume the presence of a single defect. This assumption is not always fulfilled. Welds may contain many small defects. These defects, when considered individually and without interaction, are generally innocuous. However, this may be a false conclusion as to the true strength or deformation capacity of the weld because neighbouring imperfections or defects may interact and may be more severe than each individual imperfection. When non-destructive examinations reveal multiple defects, a defect recategorisation procedure has to be applied to determine whether neighbouring defects will interact other under load. The interaction criteria of BS PD6493, ASME Boiler and Pressure Vessel Code Section XI and the Japanese fitness-of-purpose code WES 2805 are based on a combination of linear elastic fracture mechanics calculations and engineering judgement. The PD6493 and ASME XI rules are based on the principle that the increase in the stress intensity magnification caused by interaction of neigbouring defects should be limited to 20% (PD 6493) and 6% (ASME XI), whereas the WES criterion is based on the principle that the stress intensity magnification or CTOD value of the interacting neighbouring defects should be limited to 20% of the shortest defect. As the fracture behaviour of line pipe girth welds differs from linear elastic behaviour, it is expected that the existing rules are not necessarily applicable for elastic-plastic or plastic material behaviours. This consideration suggests that there exist a need for developing criteria which permit plasticity effects to be incorporated. The mathematical treatment of multiple defects under elastic-plastic and or plastic fracture conditions is a complex issue because it is not possible to predict yielding behaviour and make a distinction between local and ligament collapse. Because of this limitation, it is thus necessary to employ large scale tensile tests in which the interaction effects can be reproduced. In persuing this approach, it is further possible: (a) to verify and establish the conservatism built into the existing interaction criteria. (b) to formulate alternative interaction criteria for elastic-plastic or plastic behavior. The goal of this study was to obtain information on the failure behavior of girth welds containing two coplanar fatigue pre-cracked defects. The results were correlated with tests on welds containing a single crack to determine the engineering significance of existing defect interaction rules under elastic-plastic and plastic fracture conditions.
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6

Pitman, E. B. Plastic Deformation of Granular Materials. Fort Belvoir, VA: Defense Technical Information Center, March 1989. http://dx.doi.org/10.21236/ada208589.

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7

Di Mario, Luca, Juergen Von Kories, and Mohammed Haikal. Metals and Plastic Recycling in Maldives. Asian Development Bank, March 2023. http://dx.doi.org/10.22617/wps230010-2.

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This working paper shows how Maldives can boost recycling to strengthen its solid waste management strategy, protect its blue ocean economy, and create green business opportunities to support its long-term sustainable growth. Estimating under 2 percent of plastic waste is recycled in the island nation, it outlines how factors including high costs, inefficient collection efforts, and a lack of reprocessing facilities are hobbling recycling efforts. It recommends Maldives set up public-private partnerships with waste exporters and recyclers, incentivize domestic demand, and build a modern waste collection system to protect its environment and start the transition to a circular economy.
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Raghavan Srinivasan, Prabir K. Chaudhury, Balakrishna Cherukuri, Qingyou Han, David Swenson, and Percy Gros. Continuous Severe Plastic Deformation Processing of Aluminum Alloys. Office of Scientific and Technical Information (OSTI), June 2006. http://dx.doi.org/10.2172/885079.

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9

El-Azab, Anter. STATISTICAL MECHANICS MODELING OF MESOSCALE DEFORMATION IN METALS. Office of Scientific and Technical Information (OSTI), April 2013. http://dx.doi.org/10.2172/1073049.

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10

Suter, Robert M., and Anthony D. Rollett. Quantifying Damage Accumulation During Ductile Plastic Deformation Using Synchrotron Radiation. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1292100.

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