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1

Gregory, P. W. "Finite elastic-plastic deformations of highly anisotropic materials." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282601.

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2

Ng, Kwok-sing. "Plastic deformation of aluminium micro-specimens." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B4175802X.

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3

Ruan, Haihui. "Collision between two perfectly plastic beam structures : modeling and verification /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?MECH%202004%20RUAN.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 235-241). Also available in electronic version. Access restricted to campus users.
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4

Ng, Kwok-sing, and 吳國勝. "Plastic deformation of aluminium micro-specimens." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B4175802X.

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5

Shah, Ritesh P. "Plastic deformation and microcracking behavior of polycrystalline NiAl(Zr)." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/18928.

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6

Wadwalkar, Saurabh Sunil Jackson Robert L. "A study of elastic plastic deformation of heavily deformed spherical surfaces." Auburn, Ala., 2009. http://hdl.handle.net/10415/1957.

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7

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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8

Ghauri, I. M. "Anomalies of the plastic response of solid-solutions at low temperatures." Thesis, Brunel University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353699.

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9

Shu, Dongwei. "Structural arrangements and geometric effects on plastic deformations in collisions." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335242.

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10

Pavier, M. J. "The numerical prediction of large plastic deformations in metal forming." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332753.

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11

Pruell, Christoph. "Generation and detection of lamb waves for the characterization of plastic deformation." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26479.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Jacobs, Laurence; Committee Member: Kim, Jin-Yeon; Committee Member: Qu, Jianmin. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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12

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. Thes
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13

Chen, Xiaoxiao, and 陈晓晓. "Plastic deformation of silver micro-wires under uniaxial tension." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47048268.

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14

Sotolongo, Wilfredo. "On the numerical implementation of cyclic elasto-plastic material models." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/17594.

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15

Hammer, Tor Arne. "Deformations, strain capacity and cracking of concrete in plastic and early hardening phases." Doctoral thesis, Norwegian University of Science and Technology, Department of Structural Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1789.

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<p>Field observation reveals that cracking of free concrete surfaces in the period before and during setting, may appear at two basically different ages: Minutes after surface finishing, here called “plastic phase” and at some hours after surface finishing, here called “early hardening phase”. This has been verified by tests in the present work by investigating the deformations and strain capacities in both phases, as well as the crack initiation and propagation.</p><p>In the plastic phase, the rate of water evaporation relative to the permeability of the concrete (i.e. the ability to transpor
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16

Li, Jianjun, and 李建军. "Theoretical modelling and numerical simulation of plastic deformation of nanostructured materials with high strength and ductility." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50605707.

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Nanostructured materials have attracted intensive scientific interests during the past two decades due to their outstanding physical and mechanical properties. However, the brittleness of nanostructured materials posed a great challenge for their engineering applications. Recently, several strategies were successfully adopted to produce nanostructured materials with both high strength and ductility such as surface-nanocrystallized (SNC) materials, nanocrystalline materials with stress-induced nanograin growth and nanotwinned metals. A lot of molecular dynamics (MD) simulations, modelling and
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17

Mohseni, Hamidreza Materials Science &amp Engineering Faculty of Science UNSW. "Microstructural development and thermal stability of aluminium-based composites processed by severe plastic deformation." Awarded by:University of New South Wales. School of Materials Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/26793.

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Equal channel angular pressing ECAP is a process whereby simple shear is applied to a billet during multiple passages through an angled channel of constant cross section. The process is capable of generating very large plastic strains that significantly refines the microstructure without altering the external dimensions of the billet. A number of properties are influenced by grain refinement with the generation of a submicron grain structure SMG by ECAP resulting in improved strength and hardness and enhanced superplasticity. In this thesis, both an AA7075 alloy and AA7075 Al-base metal matrix
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18

Biesen, Eric David. "Prediction of plastic deformation in aluminum softball bats using finite element analysis." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Summer2006/e%5Fbiesen%5F072606.pdf.

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19

Di, Leo Claudio V. "A coupled theory for diffusion of hydrogen and large elastic-plastic deformations of metals." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74460.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 101-103).<br>A thermodynamically-consistent coupled-theory which accounts for diffusion of hydrogen, trapping of hydrogen, diffusion of heat, and large elastic-plastic deformations of metals is developed. Our theoretical framework places the widely-used notion of an "equilibrium" between hydrogen residing in normal interstitial lattice sites and hydrogen trapped at microstructural defects, within a thermodynamically-con
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20

Ayoub, Sherif Fathy. "Analysis of elastic-plastic continuum at large deformation using hybrid descriptions and finite element method /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487265555439612.

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21

Robles, Lora Miguel Amaurys. "Study of the I-35W Highway Bridge Collapse Mechanism." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23183.

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The Deck truss portion of the I-35W Highway Bridge in Minneapolis, Minnesota collapsed on August 1, 2007 while roadwork was underway on the bridge. The entire truss was recovered from the river to study the causes of failure. The National Transportation Safety Board attributes the collapse to inadequate load carrying capacity of the steel gusset plates connecting the main truss members at four specific nodes. Permanent deformations of the members in proximity to these nodes were documented and a surveillance video camera recorded the collapse event in a major section of the structure.<br />The
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22

Kintzel, Olaf. "Modeling of elasto-plastic material behavior and ductile micropore damage of metallic materials at large deformations /." Bochum : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985340991.

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23

Conlon, Kelly Timothy. "The effect of mesoscopic spatial heterogeneity on the plastic deformation of Al-Cu alloys." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0004/NQ42838.pdf.

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24

Song, Yuzhan. "Thermo-elastoviscoplastic postbuckling behavior of shell-like structures." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/11703.

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25

Apel, Nikolas. "Approaches to the description of anisotropic material behaviour at finite elastic and plastic deformations theory and numerics /." Stuttgart : Inst. für Mechanik (Bauwesen), 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971020213.

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26

Vijaywargiya, Raghvendra. "A finite element investigation of the deformations, forces, stress formations, and energy lossses in elasto-plastic sliding contacts." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-05132006-131833/.

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27

Kintzel, Olaf [Verfasser]. "Modeling of elasto-plastic material behavior and ductile micropore damage of metallic materials at large deformations / Olaf Kintzel." Aachen : Shaker, 2007. http://d-nb.info/1166511863/34.

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28

Engels, Philipp Simon [Verfasser], Alexander [Gutachter] Hartmaier, and Ingo [Gutachter] Steinbach. "A multi-phase-field simulation approach incorporating finite, elasto-plastic deformations / Philipp Simon Engels. Gutachter: Alexander Hartmaier ; Ingo Steinbach." Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/1102525499/34.

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29

Nguyen, Binh Duong [Verfasser], Khanh Chau [Gutachter] Le, and Klaus [Gutachter] Hackl. "Formation of dislocation structure in single crystals during plastic deformations / Binh Duong Nguyen ; Gutachter: Khanh Chau Le, Klaus Hackl." Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/111449710X/34.

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30

Ahmadi, Sadegh. "A New Eulerian-Based Double Continuity Model for Predicting the Evolution of Pair Correlation Statistics under Large Plastic Deformations." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2551.

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A new model using a double-continuity relation for predicting the evolution of pair-correlation functions (PCFs) is presented. The proposed model was developed using statistical continuum theory and is employed to predict the viscoplastic behavior of polycrystalline materials. This model was built based upon the continuity relations and a double divergence law that guarantees the conservation of both orientation and mass; and also satisfies the field equations (equilibrium, constitutive, and compatibility) at every point of the polycrystalline material throughout the deformation process. In th
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31

Lloyd, Jeffrey Townsend. "Implications of limited slip in crystal plasticity." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34808.

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To better understand consequences of classical assumptions regarding deformation mechanisms at the mesoscale, experimental observations of mesoscale deformation are presented. In light of actual micrographics of deformed polycrystals, the Von Mises criterion which states that 5 independent plastic deformation sources are needed at each material point to satisfy compatibility is studied, and the consequences of violating this assumption are presented through comprehensive parametric studies. From these studies, it can be concluded that not only are 5 independent plastic deformation sources not
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32

Yamashita, Tatsuya. "Analysis of anisotropic material." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1177700236.

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33

Apel, Nikolas [Verfasser]. "Approaches to the description of anisotropic material behaviour at finite elastic and plastic deformations : theory and numerics / Institut für Mechanik (Bauwesen) der Universität Stuttgart. Vorgelegt von Nikolas Apel." Stuttgart : Inst. für Mechanik (Bauwesen), 2004. http://d-nb.info/971020213/34.

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34

Contesti, Eric. "Description de l'interaction plasticite-viscoplasticite par un modele phenomenologique a deux deformations inelastiques : application a un acier inoxydable austenitique." Paris, ENMP, 1988. http://www.theses.fr/1988ENMP0106.

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Proposition d'un modele de comportement base sur la distinction classique, plasticite-viscoplasticite pouvant rendre compte des phenomenes de couplage entre les deux modes de deformation considerees. Dans ce modele, l'effet "inverse" de la vitesse sur les courbes de traction peut etre reproduit et l'influence de la vitesse de mise en charge sur le comportement ulterieur en relaxation est decrit. Application a la modelisation du comportement a chaud d'un acier inoxydable austenitique utilise en chaudronnerie nucleaire
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35

Kintzel, Olaf [Verfasser], Günther [Gutachter] Meschke, Klaus [Gutachter] Hackl, and Mikhail [Gutachter] Itskov. "Modeling of elasto-plastic material behavior and ductile micropore damage of metallic materials at large deformations / Olaf Kintzel ; Gutachter: Günther Meschke, Klaus Hackl, Mikhail Itskov ; Fakultät für Bau- und Umweltingenieurwissenschaften." Bochum : Ruhr-Universität Bochum, 2007. http://d-nb.info/1231542071/34.

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36

Weaver, J. M. R. "The ultrasonic imaging of plastic deformation." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375316.

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37

Thompson, Robert Peter. "Plastic deformation in complex crystal structures." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/286335.

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Many materials with complex crystal structures have attractive properties, including high specific strength, good creep resistance, oxidation resistance, often through high silicon or aluminium content. This makes them of interest for high temperature structural applications, but the use of many such phases is limited by low toughness. Even outside structural applications, brittle failure is a primary cause of failure in coatings and device materials and, therefore, improved toughness is desirable. In complex crystals plasticity, and hence toughness, is limited by the energy increases that occ
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38

Sampaio, Felipe Cavalcanti. "Análise dimensional da aresta lateral de corte e núcleo de instrumentos reciprocantes antes e após o preparo do canal radicular." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/6816.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-03T10:29:28Z No. of bitstreams: 2 Tese - Felipe Cavalcanti Sampaio - 2016.pdf: 2347191 bytes, checksum: 1aee5c04358a4bdadb8bfdb66ba81a33 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-03T10:29:48Z (GMT) No. of bitstreams: 2 Tese - Felipe Cavalcanti Sampaio - 2016.pdf: 2347191 bytes, checksum: 1aee5c04358a4bdadb8bfdb66ba81a33 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available
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39

Dahlen, Anfrid. "Plastic deformation and fracture of polymer materials." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15968.

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Polymer materials are known to dilate during plastic deformation. This thesis is a study on some of the mechanisms behind the volume change and how it is affected by triaxiality in stress. The goal was to assess how the current hyperelastic-viscoplastic constitutive material model for thermoplastics made at Structural Impact Laboratory (SIMLab) could be developed further. The volume change was studied by conducting tension tests on axisymmetric smooth and notched specimens made of high-density polyethylene (HDPE) and polyvinyl chloride (PVC). In order to change the stress triaxiality, the notc
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40

Wu, Xijia. "Constitutive laws of plastic deformation and fracture." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7821.

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Environment assisted fatigue involves plastic deformation and degrading chemical reactions, which occur in a localized region ahead of the crack tip. Basically, transgranular crack growth proceeds by alternating slip processes. In this study, a transgranular fatigue crack growth rate model is developed on the basis of restricted slip reversibility (RSR), where transgranular fatigue crack growth rate is related to plastic deformation accommodation ahead of the crack tip (the product of the cyclic plastic strain range and the plastic zone size). The model is shown to take the form of the Paris e
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41

Ющенко, Ольга Володимирівна, Ольга Владимировна Ющенко, Olha Volodymyrivna Yushchenko, and D. S. Yurko. "Investigation of Plastic Deformation Considering Nanoscale Effects." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42640.

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The self-consistent theory of plastic deformation in solid was considered within the framework of the presence of the nanoscale defects ensemble. The synergetic equations describing the self-organization of nanoscale defects were analyzed. An effective potential that distinguish plastic and solid states was obtained. For the plastic deformation waves the dispersion law depending on the diffusion coefficient of the defects was considered.
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42

Borodachenkova, Marina. "Severe plastic deformation of Al–Zn alloys." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/15492.

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Doutoramento em Engenharia Mecânica<br>In this work, the R&D work mainly focused on the mechanical and microstructural analysis of severe plastic deformation (SPD) of Al–Zn alloys and the development of microstructure–based models to explain the observed behaviors is presented. Evolution of the microstructure and mechanical properties of Al–30wt% Zn alloy after the SPD by the high–pressure torsion (HPT) has been investigated in detail regarding the increasing amount of deformation. SPD leads to the gradual grain refinement and decomposition of the Al–based supersaturated solid solution. The i
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43

MAGRO, TOMMASO. "Severe plastic deformation by backward tube flowforming." Doctoral thesis, Università degli studi di Padova, 2022. http://hdl.handle.net/11577/3459215.

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Tailored components are increasingly used in modern industry, as they allow the exploitation of key properties, such as strength, thickness, corrosion protection, type of material, in specific areas of interest of the workpiece, removing the weight where not necessary for performance purposes. It is possible to use a class of processes called “Severe Plastic Deformation” to modify some of these properties. Through the considerable refinement of the crystalline grain resulting from the high plastic deformation to which the component is subjected, not only does the resistance of the material inc
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44

Yapici, Guney Guven. "Severe plastic deformation of difficult-to-work alloys." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/531.

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The present work aims to reveal the microstructural evolution and post-processing mechanical behavior of difficult-to-work alloys upon severe plastic deformation. Severe plastic deformation is applied using equal channel angular extrusion (ECAE) where billets are pressed through a 90o corner die achieving simple shear deformation. Three different materials are studied in this research, namely Ti-6Al-4V, Ti-6Al-4V reinforced with 10% TiC and AISI 316L stainless steel. Microstructure and mechanical properties of successfully extruded billets were reported using light microscopy, scanning electro
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45

Tan, Evren. "Severe Plastic Deformation Of Age Hardenable Aluminum Alloys." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614968/index.pdf.

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Industrial products of high-strength Al-alloys are currently manufactured by thermo-mechanical processes, which are only applicable in the integrated plants requiring high investment cost. Moreover, reduction of the average grain size not less than 10 &mu<br>m and re-adjustment of process parameters for each alloy type is evaluated as disadvantage. Therefore, recently there have been many research studies for development of alternative manufacturing techniques for aluminum alloys. Research activities have shown that it is possible to improve the strength of Al-alloys remarkably by severe plast
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46

Whitten, Philip Gregory. "Friction induced plastic deformation of high polymer surfaces." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050118.113517/index.html.

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47

Chen, Zhiming [Verfasser]. "Modelling the plastic deformation of iron / Zhiming Chen." Karlsruhe : KIT Scientific Publishing, 2013. http://www.ksp.kit.edu.

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48

Ebeling, Timo [Verfasser]. "Plastic Deformation Modeling of Magnesium Alloys / Timo Ebeling." Aachen : Shaker, 2010. http://d-nb.info/1122546262/34.

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49

Kamyab, Morad. "Deformation of soft plastic solids by rigid walls." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241826.

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50

Mallmann, Camila. "Mechanisms of plastic deformation of magnesium matrix nanocomposites." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI083/document.

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Le magnésium est le plus léger des métaux, ce qui lui confère un fort potentiel pour être utilisé dans des applications où l’allégement des structures est requis. Pour autant, sa résistance mécanique est très faible, et doit donc être augmentée afin de rivaliser avec d’autres métaux légers tels que l’aluminium ou le titane. Une solution consiste à renforcer le magnésium et ses alliages en introduisant des nanoparticules d’oxydes. De par sa structure cristalline hexagonale compacte, le magnésium présente des propriétés plastiques complexes telles qu’une très forte anisotropie plastique et une p
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