Download or read book Grain Boundaries and Crystalline Plasticity written by Louisette Priester and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of this book is to put forward the fundamental role of grain boundaries in the plasticity of crystalline materials. To understand this role requires a multi-scale approach to plasticity: starting from the atomic description of a grain boundary and its defects, moving on to the elemental interaction processes between dislocations and grain boundaries, and finally showing how the microscopic phenomena influence the macroscopic behaviors and constitutive laws. It involves bringing together physical, chemical and mechanical studies. The investigated properties are: deformation at low and high temperature, creep, fatigue and rupture.
Download or read book Joints de grains et plasticit cristalline written by PRIESTER Louisette and published by Lavoisier. This book was released on 2011 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: La 4e de couverture indique : "Les joints de grains jouent un rôle majeur dans les propriétés des matériaux cristallins, en particulier dans leur comportement plastique. Une connaissance approfondie de l`objet "joint de grains" et des réactions élémentaires entre dislocations et joints de grains s`avère nécessaire pour mieux comprendre les comportements intergranulaires dans la déformation à chaud et à froid, le fluage, la fatigue et la rupture. Cette connaissance passe par le couplage des études physiques, chimiques et mécaniques ; elle requiert également une approche multi échelle : depuis l`échelle nanométærique de la structure fine du joint de grains jusqu`à l`échelle macroscopique de la réponse du polycristal à une sollicitation mécanique. Ces différents aspects sont pris en compte dans cet ouvrage ; la compréhension de l`influence des joints de grains sur la plasticité cristalline apparaît comme un enjeu dans la maîtrise des performances des matériaux."
Download or read book Defects and Disorder in Crystalline and Amorphous Solids written by Richard Catlow and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of defects and disorder in solids remains a central topic in solid state science. Developments in the field continue to be promoted by new experimental and theoretical techniques, while further impetus for the study of disorder in solids is provided by the growing range of applications of solid state materials in which disorder at the atomic level plays a crucial rOle. In this book we attempt to present a survey of fundamental and applied aspects of the field. We consider the basic aspects of defective crystalline and amorphous solids. We discuss recent studies of structural, electronic, transport, thermodynamic and spectroscopic properties of such materials. Experimental and theoretical methodologies are reviewed, and detailed consideration is given to materials such as fast ion conductors and amorphous semiconductors that are of importance in an applied context. Any survey of this large field is necessarily selective. We have chosen to emphasise insulating (especially oxidic) and semi-conducting materials. But many of the approaches and techniques we describe apply generally across the entire field of solid state science. This volume is based on a NATO ASI held at the Residencia Santa Teresa de Jesus, Madrid in September 1991. The Editor is grateful to the NATO Scientific Affairs Division for their sponsorship of this School. Thanks are also due to all who participated in and lectured at the school, but especially to the organising committee of A. V. Chadwick, G. N. Greaves, M. Grigorkiewicz, J. H. Harding and S. Kalbitzer. C. R. A.
Download or read book Joints de Grains Les written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work deals with homophase interfaces in crystalline materials. It is addressed to Ph. D. students, engineers and young researchers in the science of materials.
Download or read book Crystal Plasticity Finite Element Methods written by Franz Roters and published by John Wiley & Sons. This book was released on 2011-08-04 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the leading experts in computational materials science, this handy reference concisely reviews the most important aspects of plasticity modeling: constitutive laws, phase transformations, texture methods, continuum approaches and damage mechanisms. As a result, it provides the knowledge needed to avoid failures in critical systems udner mechanical load. With its various application examples to micro- and macrostructure mechanics, this is an invaluable resource for mechanical engineers as well as for researchers wanting to improve on this method and extend its outreach.
Download or read book Proceedings of the 8th International Symposium on Superalloy 718 and Derivatives written by The Minerals, Metals & Materials Society (TMS) and published by John Wiley & Sons. This book was released on 2014-12-02 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation and Flow of Solids Verformung und Fliessen des Festk rpers written by Richard Grammel and published by Springer Science & Business Media. This book was released on 2013-03-13 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Auf einer Sitzung des :Biiros der Internationalen Union fiir Theore tische und Angewandte Mechanik (IUTAM) in :Briissel am 21. Septem ber 1953 wurde beschlossen, ein Kolloquium iiber Festkorpermechanik (vorlaufiger Titel) fiir die letzte Septemberwoche 1955 zu pla.nen, und zwa.r in Madrid, entsprechend einer EinIadung, welche die Vertreter der zugehorigen spanischen Organisation Instituto Naciona.l de Tecnica Aeronautica "Esteban Terradas" (INTA), die Herren A. NUNEz und A. PEREZ-MARiN personIich iiberbrachten. Das vom :Biiro der IUTAM hierfiir eingesetzte Wissenschaftliche Komitee bestand aus R. GRAMMEL als Vorsitzendem und den Herren TH. VON K. ARMiN, M. Roy und G.I. TAYLOR, das spanische Organisa tions-Komitee aus den Herren A. NUNEz und A. PEREZ-MARiN samt einem Stab technischer und administrativer Mitarbeiter. In drei :Beratungen des Wissenschaftlichen Komitees (:Briissel, 27. Juli 1954; Farnborough, to. September 1954; Paris, 23. Mai 1955) wurde das Programm des Kolloquiums mit dem endgiiltigen Titel "Verformung und FlieBen des Festkorpers" festgelegt und dann in den Tagen vom 26. bis 30. September 1955 gemaB dem Plan von Seite IX verwirklicht. Jedes der drei Themen (Versetzungen und Plastizitat; Nichtlineare Elastizitat; Viskoelastizita.t und Relaxation) und insbesondere jede Sitzung wurde durch einen AIIgemeinen V ortrag eingeleitet. Die Titel aller V ortrage gibt das Inhaltsverzeichnis Seite XI und XII an. Die Vortrage wurden am 26., 27. und 29. September im Consejo Superior de Investigaciones Cientificas in Madrid gehalten, am 28. Sep tember in Torrej6n de Ardoz, verbunden mit einer :Besichtigung der Laboratorien des INTA daselbst.
Download or read book Creep of Crystals written by Jean-Paul Poirier and published by Cambridge University Press. This book was released on 1985-02-28 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook describes the physics of the plastic deformation of solids at high temperatures. It is directed at geologists or geophysicists interested in the high-temperature behaviour of crystals who wish to become acquainted with the methods of materials science in so far as they are useful to earth scientists. It explains the most important models and recent experimental results without losing the reader in the primary literature of materials science. In turn the book deals with the essential solid-state physics; thermodynamics and hydrostatics of creep; creep models and their applications in the geological sciences; diffusion creep; superplastic deformation and deformation enhanced by phase transformations. Five concluding chapters give experimental results for metals, ceramics and minerals. There are extensive bibliographies to aid further study.
Download or read book Mod lisation de la Plasticit Cristalline Et de la Migration Des Joints de Grains de L acier 304L L chelle M soscopique written by Ana Laura Cruz Fabiano and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical and functional properties of metals are strongly related to their microstructures, which are themselves inherited from thermal and mechanical processing. For example, the material grain size distribution plays an important role on the material yield limit and work hardening. The understanding of these microstructure evolutions during thermo-mechanical processes is of prime importance for a better prediction and control of the material mechanical properties. During this Ph.D., we have worked on the modelling of crystal plasticity, static recrystallization and grain growth at the mesoscopic scale in the context of isotropic mobility and interface energy. The full field model developed is based on a finite element formulation combined with a level set framework used to describe the granular structure. This Ph.D. thesis is divided in three main parts: statistical generation of digital microstructures, crystal plasticity modelling and grain boundary migration modelling. In what concerns the digital microstructures statistical generation, a comparative study between two methods (Voronoï and Laguerre-Voronoï) is presented. The ability of the second approach to respect a given grain size distribution is highlighted in 2D and 3D. Secondly, the metallic materials crystal plasticity is studied. Two hardening laws have been implemented and validated: the first one considering the total dislocation density and a second one that differentiates the statistically stored dislocations (SSD) from geometrically necessary dislocations (GNDs). Two different tests cases are used in order to validate the implementation of both hardening laws in the considered crystal plasticity model. The first one corresponds to a planar hot compression test (channel die test) on a 304L stainless steel whereas the second one corresponds to a simple cold compression test on a tantalum olygocrystal composed by six different grains. The obtained results are compared to experimental data for both cases. Grain boundary migration is studied for static recrystallization and grain growth phenomena. Compared to previous work in the considered level-set framework, the focus is on the consideration of capillary forces. Indeed pure grain growth is developed in the considered finite elements/level set formalism and this algorithm is validated using well-known analytical results. Moreover, the results of the developed full field grain growth model are compared in 2D with several well-known mean field grain growth models (Burke and Turbull model and Hillert/Abbruzzese model). The results obtained illustrate that only the Hillert/Abbruzzese model accurately describes grain growth kinetics for all initial grain size distributions. The validity of the Burke and Turnbull model is, on the contrary, restricted to specific distributions. Static recrystallization is then discussed considering both driving forces: (i) internal energy gradient and (ii) grain boundaries capillarity effects. The influence of capillary effects appears to be strongly related to the spatial distribution of the new grains. Finally, the crystal plasticity numerical results are used as input data of the developed static recrystallization full field model. The comparison of the numerical predictions obtained with 304L experimental results allows illustrating the relevance of the SSDs/GNDs formalism used concerning the prediction of the nuclei potential position.
Download or read book Internationale Union f r Theoretische und Angewandte Mechanik International Union of Theoretical and Applied Mechanics written by International Union of Theoretical and Applied Mechanics and published by Springer. This book was released on 2013-11-27 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation and Flow of Solids written by International Union of Theoretical and Applied Mechanics and published by . This book was released on 1956 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 4th Congr s International de G otechnique Ouvrages Structures written by Hoang-Hung Tran-Nguyen and published by Springer. This book was released on 2017-10-20 with total page 1181 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume for the 4th international conference CIGOS 2017 (Congrès International de Géotechnique - Ouvrages - Structures) presents novel technologies, solutions and research advances, making it an excellent guide in civil engineering for researchers, students, and professional engineers alike. Since 2010, CIGOS has become a vital forum for international scientific exchange on civil engineering. It aims to promote beneficial economic partnerships and technology exchanges between enterprises, worldwide institutions and universities. Following the success of the last three CIGOS conferences (2010, 2013 and 2015), the 4th conference was held at Ho Chi Minh City University of Technology, Ho Chi Minh City (Saigon), Vietnam on 26 to 27 October 2017. The main scientific themes of CIGOS 2017 were focused on ‘New Challenges in Civil Engineering’.
Download or read book The Clay worker written by and published by . This book was released on 1911 with total page 1546 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The log of the clay worker": v. 100, p. 188-193.
Download or read book Mechanical Twinning of Crystals written by M. V. Klassen-Neklyudova and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is not confined to mechanical twinning in the narrow sense (lattice reorientation in re sponse to mechanical stress); it deals also with many effects related to mechanical twinning. such as formation of reoriented regions in response to high temperatures (martensite transformations. recrystallization twins). elec tric fields (ferroelectric domains). and magnetiC fields (magnetic domains). Mechanical reorientation is discussed for classical twinning and also for an inhomogeneous distribution of residual stresses (irrational twinning. kinking. and so on). Mechanical twinning in the narrow sense (regular. symmetrical lattice reorientation in response to me chanical stress) was for many years a specialist topic for mineralogists. petrographers. and crystallographers. Mineralogists and crystallographers carried out the study of the basic geometrical relationships in twinning; the principal names here are MUgge, Niggli. Johnsen. Reusch. Baumhauer. Churchman. Wallerant. Evans. and FriedeL The laws of mechanical twinning are now widely used in mineral identification and in elucidating the conditions of formation of rocks from the minerals they contain. The distribution of the twin bands in rock forming minerals enables one to establish the later processes that have occurred in the rock. Mechanical twinning is discussed by geOlogiSts and petrologists in the analYSis of flow effects. The importance of mechanical twinning in the plastic deformation and rupture of crystalline solids was W stressed by Academician V.I. Vernadskii in 1897 and by Kirpicheva ina paper entitled WFatigue in Metals in 1914.
Download or read book Strengthening Mechanisms in Crystal Plasticity written by Ali Argon and published by Oxford University Press on Demand. This book was released on 2008 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technologically important metals and alloys have been strengthened throughout history by empirical means. The scientific bases of the central mechanisms of such forms of strengthening, developed over the past several decades are presented here through mechanistic models and associated experimental results.
Download or read book Mining Science written by and published by . This book was released on 1911 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-10 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
