Download or read book Frottement int rieur et s gr gation aux joints de grains dans les alliages fer carbone written by École polytechnique (Montréal, Québec). Département de génie métallurgique and published by . This book was released on 1972 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INFLUENCE DU CARBONE SUR LA STABILITE DES DISLOCATIONS EXTRINSEQUES DES JOINTS DE GRAINS DU FER ALPHA ET DES ALLIAGES FER CHROME ET FER NICKEL CUBIQUES CENTRES written by Omar Khalfallah and published by . This book was released on 1980 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE SUR FE; FE-9% CR ET FE-4% NI A FAIBLES TENEURS EN CARBONE. DETERMINATION DES CONDITIONS DE STABILISATION DES DISLOCATIONS EXTRINSEQUES DANS LES JOINTS DE GRAINS DU FER ET DE SES ALLIAGES EN FONCTION DU CARACTERE "SPECIAL" OU "GENERAL" DU JOINT, DE L'INTERVENTION OU NON D'UNE SEGREGATION INTERFACIALE

Download or read book tude des pics de frottement int rieur attribu s la relaxation des joints de grains dans les m taux C F C cubiques faces centr es de haute puret written by Jacques Woirgard and published by . This book was released on 1974 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: UN MODELE PLUS GENERAL DE LA RELAXATION EST PROPOSE, APPLICABLE TANT AUX MONOCRISTAUX QU'AUX POLYCRISTAUX, BASE SUR LA MONTEE DES DISLOCATIONS. LES VALEURS EXPERIMENTALES DES PARAMETRES DE RELAXATION DES METAUX DE STRUCTURE CUBIQUE A FACES CENTREES POLYCRISTALLINS ONT ETE PRECISEES. L'ORIGINE DE LA RELAXATION A ETE PRECISEE PAR UNE METHODE NOUVELLE SUR DES ECHANTILLONS BICRISTALLINS DE DESORIENTATION DEFINIE. L'EXISTENCE DE PICS DE RELAXATION A BASSE TEMPERATURE A ETE MISE EN EVIDENCE SUR DES METAUX DE FAIBLE ENERGIE DE FAUTE D'EMPILEMENTS, SAUF LE PB, ET DANS TOUS LES CAS DE PICS DE HAUTE TEMPERATURE. DES PICS SEMBLABLES AUX PICS TROUVES SUR DES POLYCRISTAUX ONT ETE TROUVES SUR DES MONOCRISTAUX ET DES BICRISTAUX, AVEC UNE INTENSITE MOINDRE

Download or read book Etude des pics de frottement int rieur attributes la relaxation des joints de grains dans les m taux C F C de haute puret written by Jacques Woirgard and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Les joints de grains written by Louisette Priester and published by EDP Sciences. This book was released on 2012-12-03T00:00:00+01:00 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les joints de grains sont des éléments majeurs constitutifs des matériaux cristallins. Ils jouent un rôle important dans les propriétés de ces matériaux d'autant plus que la taille des grains diminue et/ou que des procédés d'élaboration et de transformation se développent permettant de jouer sur la diversité de ces éléments dans un polycristal. Cet ouvrage présente les connaissances de base sur les joints de grains et ouvre la voie à des orientations de recherche diversifiées dans ce domaine. Le recours à des approches mathématiques est volontairement limité. Les exemples sont privilégiés, les questions qu'ils soulèvent sont discutées par référence aux théories. La démarche générale est sous-tendue par deux objectifs étroitement associés : - conduire le lecteur du joint « idéal » au joint « réel » dans les matériaux d'emploi ; - partir des connaissances établies pour aborder les perspectives qui se dessinent dans la voie d'une « Ingénierie des joints de grains ». Par ce concept, on vise la maîtrise des textures morphologiques et cristallographiques qui conditionnent les propriétés des matériaux. Ces idées expliquent la division de l'ouvrage en trois grandes parties : 1/ De l'ordre au désordre intergranulaire ; 2/ Du joint de grains idéal au joint de grains réel ; et 3/ Du joint de grains libre au joint de grains contraint. Ce livre s'adresse aux étudiants en thèse, aux ingénieurs et aux chercheurs en Science des matériaux ; il vise également une communauté scientifique désireuse de parfaire ses connaissances sur les solides cristallins et d'appréhender l'enjeu d'une Ingénierie des joints de grains pour l'amélioration des performances des matériaux.

Download or read book Etude du vieillissement d alliages fer carbone apr s trempe alpha written by Pierre Chollet and published by . This book was released on 1964 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ETUDE DES PHENOMENES DE RELAXATION DES ALLIAGES FER CARBONE DILUES written by JOSE MANUEL.. RUBIANES and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS ETUDIE LES PHENOMENES DE RELAXATION LIES A LA PRESENCE DE CARBONE DANS LE FER DE HAUTE PURETE CONTENANT DIFFERENTES CONCENTRATIONS DE CARBONE (EFFET SNOEK, EFFET SNOEK EN PRESENCE DE DISLOCATIONS DESE ET EFFET SNOEK-KOSTER). DES EXPERIENCES DE FROTTEMENT INTERIEUR, DE RECOUVRANCE ET DE MICROFLUAGE ET DES OBSERVATIONS DE MET ONT ETE EFFECTUEES. L'ANALYSE DES RESULTATS EXPERIMENTAUX MONTRE UNE DEPENDENCE IMPORTANTE DE L'INTENSITE DE LA RELAXATION SNOEK AVEC LA TEXTURE ET A PERMIS LE CALCUL DE SES PARAMETRES D'ACTIVATION. D'AUTRE PART, NOS RESULTATS MONTRENT QUE LE DESE EST UN PIC DE RELAXATION ET QU'IL FAIT PARTICIPER LES ATOMES INTERSTITIELS DE CARBONE ET LES DISLOCATIONS NON-VIS. C'EST LE MODELE D'OGURTANI ET SEEGER DU DESE QUI REND LE MIEUX COMPTE DE SES CARACTERISTIQUES EXPERIMENTALES: LA RELAXATION SERAIT DUE A LA REORIENTATION DES DIPOLES ELASTIQUES DE CARBONE INDUITE PAR LE CHAMP DE CONTRAINTES DES DISLOCATIONS NON-VIS. L'INSTABILITE DE LA RELAXATION SNOEK-KOSTER LORS DE LA PREMIERE MONTEE EN TEMPERATURE PEUT ETRE EXPLIQUEE PAR LA PRECIPITATION DE LA PHASE EPSILON, SA REVERSION ET PAR LA PRECIPITATION DE CEMENTITE

Download or read book Contribution l tude des alliages fer carbone et aluminium magn sium par frottement interne moyenne fr quence written by Danièle Lemercier and published by . This book was released on 1969 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Intangible Elements of Culture in Ethnoarchaeological Research written by Stefano Biagetti and published by Springer. This book was released on 2016-06-02 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the intangible elements of human cultures, whose relevance in the study of archaeology has often been claimed but rarely practiced. In this book, the authors successfully show how the adoption of ethnoarchaeological perspectives on non-material aspects of cultures can support the development of methodologies aimed at refining the archaeological interpretation of ancient items, technologies, rituals, settlements and even landscape. The volume includes a series of new approaches that can foster the dialogue between archaeology and anthropology in the domain of the intangible knowledge of rural and urban communities. The role of ethnoarchaeology in the study of the intangible heritage is so far largely underexplored, and there is a considerable lack of ethnoarchaeological studies explicitly focused on the less tangible evidence of present and past societies. Fresh case studies will revitalize the theoretical debate around ethnoarchaeology and its applicability in the archaeological and heritage research in the new millennium. Over the past decade, ‘intangible’ has become a key word in anthropological research and in heritage management. Archaeological theories and methods regarding the explorations of the meaning and the significance of artifacts, resources, and settlement patterns are increasingly focusing on non-material evidence. Due to its peculiar characteristics, ethnoarchaeology can effectively foster the development of the study of the intangible cultural heritage of living societies, and highlight its relevance to the study of those of the past.

Download or read book Dictionary of French and English English and French written by John Bellows and published by . This book was released on 1911 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book UNESCO General History of Africa Vol I Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description

Download or read book Peaceful Uses of Atomic Energy written by United States. Department of State and published by . This book was released on 1955 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A German English Dictionary for Chemists written by Austin M 1876-1956 Patterson and published by Scholar Select. This book was released on 2015-08-08 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Dictionary of the French and English Languages written by Gabriel Surenne and published by . This book was released on 1856 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Dictionary of English Homonyms written by A. F. Inglott Bey and published by Alpha Edition. This book was released on 2019-09 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been considered by academicians and scholars of great significance and value to literature. This forms a part of the knowledge base for future generations. We have represented this book in the same form as it was first published. Hence any marks seen are left intentionally to preserve its true nature.

Download or read book Reactor Materials written by and published by . This book was released on 1968 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: