Artículos de revistas: "Deformed materials"

1

Destrade, M. "Surface waves in deformed Bell materials". International Journal of Non-Linear Mechanics 38, n.º 6 (septiembre de 2003): 809–14. http://dx.doi.org/10.1016/s0020-7462(01)00125-1.

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2

Embury, J. D. "Micromechanical descriptions of heavily deformed materials". Scripta Metallurgica et Materialia 27, n.º 8 (octubre de 1992): 981–86. http://dx.doi.org/10.1016/0956-716x(92)90460-v.

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3

Klimanek, P., V. Klemm, A. E. Romanov y M. Seefeldt. "Disclinations in Plastically Deformed Metallic Materials". Advanced Engineering Materials 3, n.º 11 (noviembre de 2001): 877. http://dx.doi.org/10.1002/1527-2648(200111)3:11<877::aid-adem877>3.0.co;2-l.

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4

Sauvage, Xavier, Amandine Duchaussoy y Ghenwa Zaher. "Strain Induced Segregations in Severely Deformed Materials". MATERIALS TRANSACTIONS 60, n.º 7 (1 de julio de 2019): 1151–58. http://dx.doi.org/10.2320/matertrans.mf201919.

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5

Delsanto, P. P. y A. V. Clark. "Rayleigh wave propagation in deformed orthotropic materials". Journal of the Acoustical Society of America 81, n.º 4 (abril de 1987): 952–60. http://dx.doi.org/10.1121/1.394575.

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6

Field, D. P. "Analysis of Grain Fragmentation in Deformed Materials". Microscopy and Microanalysis 9, S02 (28 de julio de 2003): 76–77. http://dx.doi.org/10.1017/s1431927603440993.

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7

Ivlev, Y. "Vibrational compaction of hard deformed powder materials". Metal Powder Report 52, n.º 7-8 (julio de 1997): 38. http://dx.doi.org/10.1016/s0026-0657(97)80176-2.

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8

Ivlev, Y. "Vibrational compaction of hard deformed powder materials". Metal Powder Report 53, n.º 7-8 (8 de julio de 1997): 38. http://dx.doi.org/10.1016/s0026-0657(97)84682-6.

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9

Merala, T. B., H. W. Chan, D. G. Howitt, P. V. Kelsey, G. E. Korth y R. L. Williamson. "Dislocation microstructures in explosively deformed hard materials". Materials Science and Engineering: A 105-106 (noviembre de 1988): 293–98. http://dx.doi.org/10.1016/0025-5416(88)90510-1.

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10

Baranov, V. L. y A. V. Kanunnikov. "Response of deformed materials in dynamic contact". Russian Engineering Research 28, n.º 11 (noviembre de 2008): 1058–62. http://dx.doi.org/10.3103/s1068798x08110075.

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11

Ovid'ko, I. "Triple junction nanocracks in deformed nanocrystalline materials". Acta Materialia 52, n.º 5 (8 de marzo de 2004): 1201–9. http://dx.doi.org/10.1016/j.actamat.2003.11.004.

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12

Belyakov, Andrey y Rustam Kaibyshev. "Two Types of Grain Boundaries in Deformed Materials". Materials Science Forum 207-209 (febrero de 1996): 461–64. http://dx.doi.org/10.4028/www.scientific.net/msf.207-209.461.

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13

Scheriau, S., M. Kriegisch, S. Kleber, N. Mehboob, R. Grössinger y R. Pippan. "Magnetic characteristics of HPT deformed soft-magnetic materials". Journal of Magnetism and Magnetic Materials 322, n.º 20 (octubre de 2010): 2984–88. http://dx.doi.org/10.1016/j.jmmm.2010.04.032.

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14

Galich, Pavel I., Nicholas X. Fang, Mary C. Boyce y Stephan Rudykh. "Elastic wave propagation in finitely deformed layered materials". Journal of the Mechanics and Physics of Solids 98 (enero de 2017): 390–410. http://dx.doi.org/10.1016/j.jmps.2016.10.002.

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15

Gutkin, M. Yu y I. A. Ovid’ko. "Generation of dislocation loops in deformed nanocrystalline materials". Philosophical Magazine 86, n.º 11 (11 de abril de 2006): 1483–511. http://dx.doi.org/10.1080/14786430500199302.

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16

Ovid’ko, I. A. y A. G. Sheinerman. "Elliptic nanopores in deformed nanocrystalline and nanocomposite materials". Philosophical Magazine 86, n.º 10 (abril de 2006): 1415–26. http://dx.doi.org/10.1080/14786430500311766.

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17

BOULANGER, PH y M. HAYES. "FINITE-AMPLITUDE WAVES IN DEFORMED MOONEY-RIVLIN MATERIALS". Quarterly Journal of Mechanics and Applied Mathematics 45, n.º 4 (1992): 575–93. http://dx.doi.org/10.1093/qjmam/45.4.575.

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18

Gil Sevillano, J. y E. Aernoudt. "Low energy dislocation structures in highly deformed materials". Materials Science and Engineering 86 (febrero de 1987): 35–51. http://dx.doi.org/10.1016/0025-5416(87)90441-1.

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19

Destrade, M., M. Otténio, A. V. Pichugin y G. A. Rogerson. "Non-principal surface waves in deformed incompressible materials". International Journal of Engineering Science 43, n.º 13-14 (septiembre de 2005): 1092–106. http://dx.doi.org/10.1016/j.ijengsci.2005.03.009.

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20

Freudenberger, J., J. Lyubimova, A. Gaganov, H. Klauß y L. Schultz. "Mechanical behaviour of heavily deformed CuAgZr conductor materials". Journal of Physics: Conference Series 240 (1 de julio de 2010): 012112. http://dx.doi.org/10.1088/1742-6596/240/1/012112.

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21

Bobylev, S. V., M. Yu Gutkin y I. A. Ovid'ko. "Transformations of grain boundaries in deformed nanocrystalline materials". Acta Materialia 52, n.º 13 (agosto de 2004): 3793–805. http://dx.doi.org/10.1016/j.actamat.2004.04.029.

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22

Romanov, A. E. "Importance of Disclinations in Severe Plastically Deformed Materials". Advanced Engineering Materials 5, n.º 5 (16 de mayo de 2003): 301–7. http://dx.doi.org/10.1002/adem.200310087.

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23

Benn, Douglas I. y David J. A. Evans. "The interpretation and classification of subglacially-deformed materials". Quaternary Science Reviews 15, n.º 1 (enero de 1996): 23–52. http://dx.doi.org/10.1016/0277-3791(95)00082-8.

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24

Sakai, Taku y Hiromi Miura. "Annealing of Deformed Materials Developed by Continuous/Discontinuous Dynamic Recrystallization". Materials Science Forum 550 (julio de 2007): 327–32. http://dx.doi.org/10.4028/www.scientific.net/msf.550.327.

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Annealing behaviour was studied in deformed copper developed by continuous or discontinuous dynamic recrystallization (cDRX or dDRX). Pure copper was deformed to large strains by multi-directional forging at room temperature, resulting in an ultra-fine grained structure due to operation of cDRX. Subsequent annealing of such a fine-grained copper can be controlled mainly by grain growth accompanied with recovery and no texture change, that is continuous static recrystallization (cSRX). On the other hand, 4 kinds of static restoration processes operate during annealing of dDRXed copper, i.e. metadaynamic recovery and recystallization (mDRV and mDRX), and classical static recovery and recrystallization. The stable existence of mDRVed grains containing moderate dislocations leads to incomplete recrystallization even after a long period of annealing time. It is discussed how such various types of annealing processes, occurring in cDRXed or dDRXed matrices, can be connected with the characteristic nature of the deformed microstructures.

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25

Kramer, M. J., L. S. Chumbley y R. W. McCallum. "Analysis of deformed YBa2Cu3O7??" Journal of Materials Science 25, n.º 4 (abril de 1990): 1978–86. http://dx.doi.org/10.1007/bf01045752.

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26

Zhang, Zhenglin, Yangyang Sun, Qinghua Zhang, Jianli Duan y Lei Gao. "Applications of optical frequency-domain reflectometry technology in strain-deformed configuration conversion of structural surface deformed configuration measurement". International Journal of Distributed Sensor Networks 15, n.º 11 (noviembre de 2019): 155014771989163. http://dx.doi.org/10.1177/1550147719891636.

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In this study, the conversion relation between deformed configuration and strain during structural monitoring was analyzed based on the basic mechanics principle of materials. A distributed fiber optic measurement system was used to measure the accurate values of structural surface strain, and then calculate the intensity of surface-deformed configuration further. An optical fiber was attached to the surface of a flexible steel ruler, and the generated strain data were used to precisely measure the endpoint-deformed configuration of the ruler. Furthermore, the calculated deformed configuration was calculated and compared with the actual deformed configuration. It was found that the curves of calculated deformed configuration basically coincided (with a relative error of less than 0.6%) with the curves of actual deformed configuration.

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27

Kassner, M. E., P. Geantil, L. E. Levine y B. C. Larson. "Backstress, the Bauschinger Effect and Cyclic Deformation". Materials Science Forum 604-605 (octubre de 2008): 39–51. http://dx.doi.org/10.4028/www.scientific.net/msf.604-605.39.

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Backstresses or long range internal stresses (LRIS) in the past have been suggested by many to exist in plastically deformed crystalline materials. Elevated stresses can be present in regions of elevated dislocation density or dislocation heterogeneities in the deformed microstructures. The heterogeneities include edge dislocation dipole bundles (veins) and the edge dipole walls of persistent slip bands (PSBs) in cyclically deformed materials and cell and subgrain walls in monotonically deformed materials. The existence of long range internal stress is especially important for the understanding of cyclic deformation and also monotonic deformation. X-ray microbeam diffraction experiments performed by the authors using synchrotron x-ray microbeams determined the elastic strains within the cell interiors. The studies were performed using, oriented, monotonically deformed Cu single crystals. The results demonstrate that small long-range internal stresses are present in cell interiors. These LRIS vary substantially from cell to cell as 0 % to 50 % of the applied stress. The results are related to the Bauschinger effect, often explained in terms of LRIS.

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28

Wilde, Gerhard y Sergiy Divinski. "Grain Boundaries and Diffusion Phenomena in Severely Deformed Materials". MATERIALS TRANSACTIONS 60, n.º 7 (1 de julio de 2019): 1302–15. http://dx.doi.org/10.2320/matertrans.mf201934.

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29

Panin, V. E., N. S. Surikova, A. S. Smirnova y Yu I. Pochivalov. "Mesoscopic Structural States in Plastically Deformed Nanostructured Metal Materials". Physical Mesomechanics 21, n.º 5 (septiembre de 2018): 396–400. http://dx.doi.org/10.1134/s102995991805003x.

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30

Boulanger, Ph, M. Hayes y C. Trimarco. "Finite-amplitude plane waves in deformed Hadamard elastic materials". Geophysical Journal International 118, n.º 2 (agosto de 1994): 447–58. http://dx.doi.org/10.1111/j.1365-246x.1994.tb03976.x.

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31

Petrov, A. I. y M. V. Razuvaeva. "Criterion for the pore-pore interaction in deformed materials". Technical Physics 60, n.º 4 (abril de 2015): 607–9. http://dx.doi.org/10.1134/s1063784215040210.

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32

Kratochvíl, Jan, Martin Kružík y Radan Sedláček. "Instability origin of subgrain formation in plastically deformed materials". International Journal of Engineering Science 48, n.º 11 (noviembre de 2010): 1401–12. http://dx.doi.org/10.1016/j.ijengsci.2010.09.017.

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33

WALGRAEF, D. "Reaction-transport dynamics and dislocation patterns in deformed materials". Earth-Science Reviews 29, n.º 1-4 (octubre de 1990): 299–308. http://dx.doi.org/10.1016/0012-8252(90)90044-v.

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34

Leffers, T. "Long-range stresses associated with boundaries in deformed materials". Physica Status Solidi (a) 149, n.º 1 (16 de mayo de 1995): 69–84. http://dx.doi.org/10.1002/pssa.2211490105.

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35

Yu, Tianbo y Niels Hansen. "Coarsening kinetics of fine-scale microstructures in deformed materials". Acta Materialia 120 (noviembre de 2016): 40–45. http://dx.doi.org/10.1016/j.actamat.2016.08.032.

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36

Martinkovič, Maroš y Stefan Vaclav. "Estimation of Local Plastic Deformation of Polycrystalline Materials". Key Engineering Materials 586 (septiembre de 2013): 39–42. http://dx.doi.org/10.4028/www.scientific.net/kem.586.39.

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Final properties of formed steel or another alloy pieces are affected even by plastic deformation of material. Therefore it is needful to know detail structure changes of material under conditions of plastic deformation caused by forming, grinding, drilling etc. Estimation of the deformation based on its observable macroscopic effects doesn’t correspond fully with microscopic structural changes in whole volume of deformed parts and such estimation is quite impossible in case if only surface layers are deformed. It is possible to obtain value of strain by measurement of grain boundary deformation. Effect of grains boundaries self-orientation caused by grains deformation can be identified on metallographic cut. Stereological measurement of degree of grain boundary orientation is relatively simple if axes of orientation are known (as it is in most of deformation processes). Preferred direction of grains boundaries orientation is the same as direction of deformation; however orientation is not the same thing as deformation. Therefore model of conversion of degree of grain boundary orientation to deformation based on an idealized shape of grains has been proposed. This conversion model is independent on an initial grain size – strain depends only on the shape of the grain and does not depend on its dimension. It allows experimental estimation of local plastic deformation by means of measurement of grain boundary orientation in various areas of plastically deformed parts.

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37

Hao, Min, Cheng Wen Tan, Xu Dong Wang, Wei Wei He y Bin Yang. "Impact of Peak Shock Stress on the Microstructure and Reloaded Mechanical Behavior of AZ31 Magnesium Alloy". Materials Science Forum 788 (abril de 2014): 64–67. http://dx.doi.org/10.4028/www.scientific.net/msf.788.64.

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Magnesium alloys can be utilized as potential aerospace materials due to their low density, high specific strength, good vibration and shock absorption ability. This paper deals with the mechanical behavior of hot-rolled AZ31 alloy that was shock-deformed to 2.3 and 3.3 GPa. The post shock microstructure and mechanical response have been determined via full one-dimensional recovery techniques. The microstructure of deformed sample was characterized by the transmission electron microscopy (TEM) and electron back scattered diffraction (EBSD) techniques. All the shock-deformed materials showed shock-strengthening effect that was greater at higher shock pressure. The reload yield stress of the shock-deformed 2.3 GPa sample was determined to be 238 MPa while 264 MPa for the sample which shock-deformed at 3.3 GPa. It was postulated that the shock-strengthening is ascribed to a greater dislocation density and the formation of deformation twins.

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38

Swamy, P. Narayana. "q-deformed Fermions". European Physical Journal B 50, n.º 1-2 (16 de febrero de 2006): 291–94. http://dx.doi.org/10.1140/epjb/e2006-00055-7.

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39

Bartha, Kristína, Anna Terynková, Josef Stráský, Peter Minárik, Jozef Veselý, Veronika Polyakova, Irina Semenova y Miloš Janeček. "Inhomogeneous Precipitation of the α-Phase in Ti15Mo Alloy Deformed by ECAP". Materials Science Forum 941 (diciembre de 2018): 1183–88. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1183.

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A metastable β-titanium alloy, Ti15Mo was subjected to equal channel angular pressing (ECAP). The resulting microstructure of the material is inhomogeneous consisting of micrometer size β-grains with deformed bands containing ultra-fine β-grains. The ECAP-deformed sample was subjected to thermal treatment in order to elucidate the difference in morphology of the α-phase precipitation in deformed and non-deformed materials. The α-phase formation is accelerated in areas with higher concentration of lattice defects. The detail investigation by transmission electron microscopy revealed equixed α-phase formation in deformed bands. In the transition area between deformed band and β-matrix grain boundary α-phase forms while in the interior of the β-grains the α-phase precipitation is suppressed.

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40

Zhang, Wenxue, Youping Yi, Shiquan Huang, Hailin He y Fei Dong. "Effects of Deformation at High, Medium, and Cryogenic Temperatures on the Microstructures and Mechanical Properties of Al-Zn-Mg-Cu Alloys". Materials 15, n.º 19 (7 de octubre de 2022): 6955. http://dx.doi.org/10.3390/ma15196955.

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Thermomechanical treatment is an effective way to refine the coarse microstructures of aluminum alloys. In this work, multiaxial forging deformation at high, medium, and cryogenic temperatures (i.e., 450, 250, and −180 °C, respectively) was performed on 7085 Al-Zn-Mg-Cu alloys, and its effect on the microstructure evolution and mechanical properties during the subsequent T6 heat treatment process was studied. The results revealed that the coarse particles were broken into finer particles when deformed at cryogenic temperatures, promoting the dissolution of the material after solid solution treatment. Dynamic recrystallization occurred when deformed at 450 °C; however, more dislocations and substructures were found in the samples deformed at 250 and −180 °C, causing static recrystallization after solid solution treatment. The cryogenic deformed sample exhibited a more intense and homogeneous precipitation phase distribution. The strength of the sample deformed at high temperature was high, but its elongation was low, while the strength of the sample deformed at medium temperature was low. The microstructure refinement of the cryogenic deformed sample led to high comprehensive mechanical properties, with an ultimate tensile strength of 535 MPa, a yield strength of 506 MPa, and a fracture elongation of 11.1%.

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41

Gentot, Laetitia, Mathias Brieu y Gérard Mesmacque. "Modeling of Stress-Softening for Elastomeric Materials". Rubber Chemistry and Technology 77, n.º 4 (1 de septiembre de 2004): 759–75. http://dx.doi.org/10.5254/1.3547850.

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Abstract An experimental study of deformed reinforced elastomeric materials in uni-axial tension test has been carried out and brings to the fore a significant stress-softening during the first cycles. A new predicted stress-softening model is proposed and well adapted to many rubber-like materials.

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42

Venerus, David C., David Nieto Simavilla y Jay D. Schieber. "THERMAL TRANSPORT IN CROSS-LINKED ELASTOMERS SUBJECTED TO ELONGATIONAL DEFORMATIONS". Rubber Chemistry and Technology 92, n.º 4 (1 de octubre de 2019): 639–52. http://dx.doi.org/10.5254/rct.19.80382.

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ABSTRACT Investigations on thermal transport in cross-linked elastomers subjected to elongational deformations are reviewed and discussed. The focus is on experimental research, in which the deformation-induced anisotropy of the thermal conductivity tensor in several common elastomeric materials is measured using novel optical techniques developed in our laboratory. These sensitive and noninvasive techniques allow for the reliable measurement of thermal conductivity (diffusivity) tensor components on samples in a deformed state. When combined with measurements of the stress in deformed samples, we are able to examine the validity of the stress–thermal rule, which predicts a linear relationship between the thermal conductivity and stress tensor in deformed polymeric materials. These results are used to shed light on possible underlying mechanisms for anisotropic thermal transport in elastomers. We also present results from a novel experimental technique that show evidence of a deformation dependence of the heat capacity, which implies that, in addition to the usual entropic contribution, there is an energetic contribution to the stress in deformed elastomers.

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43

Landau, P., R. Z. Shneck, G. Makov y A. Venkert. "Microstructure evolution in deformed copper". Journal of Materials Science 42, n.º 23 (20 de agosto de 2007): 9775–82. http://dx.doi.org/10.1007/s10853-007-1999-6.

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44

Zaefferer, S. "On-Line Semi-Automatic Measurement of Individual Crystal Orientations in Heavily Deformed Materials in the TEM". Microscopy and Microanalysis 5, S2 (agosto de 1999): 202–3. http://dx.doi.org/10.1017/s1431927600014331.

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The measurement of individual crystal orientations in heavily deformed materials is of great importance especially for the study of recrystallization mechanisms. The electron backscattering diffraction (EBSD) technique which is frequently used nowadays in the SEM for these kind of studies has three important drawbacks: first, its spatial resolution is limited to about 0.5 μm, second, the sample deformation is limited to only about 60 %, and third, the dislocation microstructure cannot be observed. All these problems can be overcome using a micro beam diffraction technique in the TEM. Two techniques can be distinguished, the Kikuchi pattern technique and the spot pattern technique. With a spatial resolution of down to about 10 nm they arc well suited for orientation measurements in highly deformed material. Nevertheless, since spot patterns are less sensible to deformation the spot technique is the ultimate choice in the case a most highly deformed material. An automatic procedure for the evaluation of spot patterns has been developed and, together with the Kikuchi technique, implemented in a computer program for the on-line analysis of crystal orientations at the TEM. The new procedure and its applications to highly deformed materials is the subject of this presentation. Spot patterns are less sensitive to the sample deformation than Kikuchi patterns due to the differences in the diffraction geometry and due to the relaxation of the Bragg diffraction conditions for spot patterns.

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45

Scardi, Paolo, Matteo Leoni y Mirco D'Incau. "Full Pattern Methods for the Analysis of Plastically Deformed Materials". Solid State Phenomena 130 (diciembre de 2007): 27–32. http://dx.doi.org/10.4028/www.scientific.net/ssp.130.27.

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The recent evolution of powder diffraction line profile analysis toward full pattern methods is discussed. Specific reference is made to the Whole Powder Pattern Modelling (WPPM), as applied to metals and ceramics subjected to strong plastic deformation. Examples concerning three different materials science studies are shown to illustrate features and potentialities of the WPPM approach.

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46

Miyamoto, Hiroyuki, Motohiro Yuasa, Muhammad Rifai y Hiroshi Fujiwara. "Corrosion Behavior of Severely Deformed Pure and Single-Phase Materials". MATERIALS TRANSACTIONS 60, n.º 7 (1 de julio de 2019): 1243–55. http://dx.doi.org/10.2320/matertrans.mf201935.

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47

Leem, Juyoung. "A snapshot review on exciton engineering in deformed 2D materials". MRS Advances 5, n.º 64 (2020): 3491–506. http://dx.doi.org/10.1557/adv.2020.350.

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AbstractMost optoelectronic characteristics of two-dimensional (2D) materials are associated with excitonic effects. Excitonic effects in 2D material have been intensively investigated, and various efforts to engineer exciton behavior in 2D materials have been reported for advanced nanophotonic and optoelectronic applications. Excitons in 2D semiconductors can be controlled by external stimuli, including mechanical, electrical, thermal, and magnetic stimuli. Mechanical stimuli applied to a 2D material can generate uniform or non-uniform deformation and strain gradient in the 2D lattice, which creates a strain-induced bandgap energy gradient in the 2D material. In an inhomogeneous bandgap energy gradient generated by a non-uniform strain gradient, excitons drift across the energy gradient. Exciton engineering in deformed 2D materials aims to control exciton movement by mechanical strain. In this snapshot review, we focus on exciton engineering in a mechanically deformed 2D material and their potential towards advanced optoelectronic and photonic applications.

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48

Biradar, A. M., S. S. Bawa y W. Haase. "Goldstone mode behaviour in deformed helix ferroelectric liquid crystal materials". Ferroelectrics 256, n.º 1 (enero de 2001): 201–10. http://dx.doi.org/10.1080/00150190108015984.

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49

Henn, Tamás y Róbert W. Pál. "Evaluation of desiccated and deformed diaspores from natural building materials". Ethnobiology Letters 6, n.º 1 (27 de marzo de 2015): 10–24. http://dx.doi.org/10.14237/ebl.6.1.2015.229.

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With the increasing sophistication of paleoethnobotanical methods, it is now possible to reconstruct new aspects of the day-to-day life of past peoples, and, ultimately, gain information about their cultivated plants, land-use practices, architecture, diet, and trade. Reliable identification of plant remains, however, remains essential to the study of paleoethnobotany, and there is still much to learn about precise identification. This paper describes and evaluates the most frequent types of deformed desiccated diaspores revealed from adobe bricks used in buildings in Southwestern Hungary that were built primarily between 1850 and 1950. A total of 24,634 diaspores were recovered from 333.05 kg adobe samples. These seeds and fruits belong to 303 taxa, and the majority were arable and ruderal weed species. A total of 98.97% of the diaspores were identified to species. In other cases, identification was possible only to genus or family (0.93% and 0.10% of diaspores, respectively). Difficulties in identification were caused mainly by morphological changes in the size, shape, color, and surface features of diaspores. Most diaspores were darker in color and significantly smaller than fresh or recently desiccated seeds and fruits. Surface features were often absent or fragmented. The most problematic seeds to identify were those of Centaurea cyanus, Consolida regalis, Scleranthus annuus and Daucus carota ssp. carota, which are discussed in detail. Our research aids archaeobotanists in the identification of desiccated and deformed diaspores.

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50

Rushchitsky, Jeremiah. "Self-switching of displacement waves in elastic nonlinearly deformed materials". Comptes Rendus Mécanique 330, n.º 3 (enero de 2002): 175–80. http://dx.doi.org/10.1016/s1631-0721(02)01444-4.

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Artículos de revistas sobre el tema "Deformed materials"

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