Caracterisation De Leffet Portevin Le Chatelier Dans Les Alliages Aluminium Magnesium

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Caractérisation de l'effet Portevin Le Chatelier dans les alliages Aluminium Magnésium

Author : Khaidre Bouabdallah
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (493 download)

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Book Synopsis Caractérisation de l'effet Portevin Le Chatelier dans les alliages Aluminium Magnésium by : Khaidre Bouabdallah

Download or read book Caractérisation de l'effet Portevin Le Chatelier dans les alliages Aluminium Magnésium written by Khaidre Bouabdallah and published by . This book was released on 2006 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les instabilités mécaniques associées à l'effet Portevin Le Chatelier (PLC) se manifestent par des hétérogénéités macroscopiques sous forme de bandes de localisation de la déformation plastique. Ce phénomène affecte les propriétés mécaniques du matériau et réduit la qualité du produit lors de la fabrication par mise en forme. Nous avons étudié le comportement instable de la déformation plastique dans une série d'alliages d'Aluminium Magnésium dilués industriels largement utilisés pour la fabrication de pièces mécaniques par emboutissage. Pour la caractérisation des instabilités PLC dans ces matériaux, les essais mécaniques ont été réalisés en traction uniaxiale à vitesse de déformation imposée. Les conditions d'apparition et de propagation des bandes de localisation de la déformation plastique liées au phénomène PLC ont été étudiées dans une large gamme de vitesses de déformation à température ambiante. L'influence de la teneur en élément d'alliage (Mg) sur les caractéristiques des instabilités est clairement établie. Nos résultats confirment l'existence d'une sensibilité négative de la contrainte d'écoulement par rapport à la vitesse de déformation dans l'ensemble du domaine de l'effet PLC. Nous montrons que le mode de propagation des bandes PLC dépend non seulement de la vitesse de déformation imposée mais aussi du taux d'écrouissage du matériau. Parallèlement au dispositif d'essai de traction classique nous avons enregistré les variations des champs de déplacement et de température en surface de l'éprouvette au cours de la déformation plastique. L'analyse par corrélation d'images de ces données a permit de mettre en évidence les différents modes de génération et de propagation des bandes A, B et C caractéristiques de l'effet PLC. Les paramètres physiques relatifs aux bandes PLC tels que largeur, vitesse de propagation et de déformation à l'intérieur de la bande ont été quantifiés. Nos investigations montrent, grâce à l'analyse des enregistrements par thermographie infrarouge, que l'instabilité PLC est associée à un saut de température propre à chaque type de bande en même temps qu'une décharge élastique ressentie par l'ensemble de l'éprouvette. En rapport avec le développement actuel dans le domaine de la modélisation du comportement mécanique des matériaux, l'analyse de la déformation plastique instable donne accès à des paramètres indispensables pour la mise au point de simulations par éléments finis réalistes.

Étude des particularités du phénomène Portevin-Le Chatelier dans les alliages aluminium-magnésium

Author : Jane Guillot
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (251 download)

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Book Synopsis Étude des particularités du phénomène Portevin-Le Chatelier dans les alliages aluminium-magnésium by : Jane Guillot

Download or read book Étude des particularités du phénomène Portevin-Le Chatelier dans les alliages aluminium-magnésium written by Jane Guillot and published by . This book was released on 1971 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Light Metals 2012

Author : Carlos Suarez
Publisher : Springer
ISBN 13 : 3319481797
Total Pages : 1314 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Light Metals 2012 by : Carlos Suarez

Download or read book Light Metals 2012 written by Carlos Suarez and published by Springer. This book was released on 2016-12-23 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt: An update of the definitive annual reference source in the field of aluminum production and related light metals technologies, a great mix of materials science and practical, applied technology surrounding aluminum, bauxite, aluminum reduction, rolling, casting, and production.

Electroless Nickel Plating: Fundamentals to Applications

Author : Fabienne Delaunois
Publisher : CRC Press
ISBN 13 : 0429881134
Total Pages : 337 pages
Book Rating : 4.4/5 (298 download)

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Book Synopsis Electroless Nickel Plating: Fundamentals to Applications by : Fabienne Delaunois

Download or read book Electroless Nickel Plating: Fundamentals to Applications written by Fabienne Delaunois and published by CRC Press. This book was released on 2019-10-30 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroless Nickel Plating: Fundamentals to Applications provides a complete and actualized view of electroless nickel plating, thus greatly improving the accessibility of knowledge on the subject. It touches upon all aspects of electroless nickel, from the fundamentals (including thermodynamics of electroless plating, bath chemistry, and substrate preparation) to more applied areas of the field such as bath replenishment, composite coatings, post-treatments, polyalloys, graded and multilayer coatings, ultrasound assistance, applications, and properties. Contributed to by a variety of international authors to ensure different points of view and interests are addressed, this book stands as the first complete and updated state-of-the-art text on electroless nickel in the twenty-first century. It also serves as the first technical book with a strong emphasis on nickel-boron. It also focuses on environmental aspects. Including cutting-edge content presented sufficiently extensive to be directly useful to the practitioner, this book is aimed at materials scientists, metallurgists, and other professionals working with electroless nickel plating.

Al-Si Alloys

Author : Francisco C. Robles Hernandez
Publisher : Springer
ISBN 13 : 3319583808
Total Pages : 253 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Al-Si Alloys by : Francisco C. Robles Hernandez

Download or read book Al-Si Alloys written by Francisco C. Robles Hernandez and published by Springer. This book was released on 2017-07-02 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details aluminum alloys with special focus on the aluminum silicon (Al‐Si) systems – that are the most abundant alloys second only to steel. The authors include a description of the manufacturing principles, thermodynamics, and other main characteristics of Al‐Si alloys. Principles of processing, testing, and in particular applications in the Automotive, Aeronautical and Aerospace fields are addressed.

Science of Hard Materials

Author : R. Viswanadham
Publisher : Springer Science & Business Media
ISBN 13 : 1468443194
Total Pages : 990 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Science of Hard Materials by : R. Viswanadham

Download or read book Science of Hard Materials written by R. Viswanadham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the first International Conference on the Science of Hard Materials held in Moran, Wyoming, Aug. 23-28, 1981. The objective of the conference was to review and advance the state of knowledge of the basic physical and chemical properties of hard materials and show how these properties influence performance in a variety of applications. To this end, the 49 con tributed papers and the four keynote papers by Prof. Fischmeister and Drs. Hintermann, Exner and Almond, present an excellent overview of the state of the art in the "science" of hard materials. The contents of these proceedings also reflect the fact that hard metal technology is now well matured and several aspects of the behavior of these materials are well understood and firmly established. Structure-property relationships in this class of materials are currently well known. Pitfalls in some of the traditional test methods have been recognized and new test methods are being developed which discriminate between intrinsic material properties and flaw content and distribution. Application of fracture mechanics, al though a late corner to the hard materials area (as compared to other structural materials), is rapidly gaining acceptance and new fracture toughness test methods are being developed. Application of modern analysis and analytical techniques to these materials has begun and entirely new and unexpected information has been obtained. For a variety of reasons, "hard metals" have dominated the research and development scene of "hard materials".

THERMEC 2021

Author : Mihail Ionescu
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3035736308
Total Pages : 1937 pages
Book Rating : 4.0/5 (357 download)

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Book Synopsis THERMEC 2021 by : Mihail Ionescu

Download or read book THERMEC 2021 written by Mihail Ionescu and published by Trans Tech Publications Ltd. This book was released on 2021-01-05 with total page 1937 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Conference on Processing & Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications Selected, peer-reviewed papers from the International Conference on Processing & Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications (THERMEC 2021), May 10-14, 2021, Vienna, Austria

Friction, Wear and Wear Protection

Author : Alfons Fischer
Publisher : John Wiley & Sons
ISBN 13 : 3527628525
Total Pages : 784 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Friction, Wear and Wear Protection by : Alfons Fischer

Download or read book Friction, Wear and Wear Protection written by Alfons Fischer and published by John Wiley & Sons. This book was released on 2011-02-10 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings collect invited and contributed papers from more than 150 scientists and engineers worldwide which provide an up-to-date overview of the current research on friction and wear, including new systematic approaches as well as innovative technical solutions.

Encyclopedia of Iron, Steel, and Their Alloys (Online Version)

Author : Rafael Colás
Publisher : CRC Press
ISBN 13 : 1000031675
Total Pages : 3918 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Encyclopedia of Iron, Steel, and Their Alloys (Online Version) by : Rafael Colás

Download or read book Encyclopedia of Iron, Steel, and Their Alloys (Online Version) written by Rafael Colás and published by CRC Press. This book was released on 2016-01-06 with total page 3918 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first of many important works featured in CRC Press’ Metals and Alloys Encyclopedia Collection, the Encyclopedia of Iron, Steel, and Their Alloys covers all the fundamental, theoretical, and application-related aspects of the metallurgical science, engineering, and technology of iron, steel, and their alloys. This Five-Volume Set addresses topics such as extractive metallurgy, powder metallurgy and processing, physical metallurgy, production engineering, corrosion engineering, thermal processing, metalworking, welding, iron- and steelmaking, heat treating, rolling, casting, hot and cold forming, surface finishing and coating, crystallography, metallography, computational metallurgy, metal-matrix composites, intermetallics, nano- and micro-structured metals and alloys, nano- and micro-alloying effects, special steels, and mining. A valuable reference for materials scientists and engineers, chemists, manufacturers, miners, researchers, and students, this must-have encyclopedia: Provides extensive coverage of properties and recommended practices Includes a wealth of helpful charts, nomograms, and figures Contains cross referencing for quick and easy search Each entry is written by a subject-matter expert and reviewed by an international panel of renowned researchers from academia, government, and industry. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]

Comprehensive Guide for Nanocoatings Technology

Author : Mahmood Aliofkhazraei
Publisher : Nova Science Publishers
ISBN 13 : 9781634824477
Total Pages : 0 pages
Book Rating : 4.8/5 (244 download)

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Book Synopsis Comprehensive Guide for Nanocoatings Technology by : Mahmood Aliofkhazraei

Download or read book Comprehensive Guide for Nanocoatings Technology written by Mahmood Aliofkhazraei and published by Nova Science Publishers. This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first volume of a four volume set of the Comprehensive Guide for Nanocoatings Technology. Nanocoatings are a kind of thin film with at least one nanometric dimension. The main difference between nano and ordinary coatings is in their structure and properties. To recognise these differences, it is required to study the properties and structure of nanocoatings. The properties of every substance are controlled by their constituents. In this regard, properties of coatings depend on the constituent grains and particles. The chemical, physical, and mechanical properties of nanocoatings including their electrical resistance, permeability, corrosion and abrasion resistance, and magnetic properties, which are a function of structure and particle size of coatings. It is evident that use of these features creates many potential applications. This volume mainly discusses the deposition and growth mechanism of nanocoatings. There are 16 chapters in this volume; each one includes examples of these interesting materials, supported by appropriate figures for better clarification.

Comprehensive Guide for Nanocoatings Technology, Volume 1

Author : Mahmood Aliofkhazraei
Publisher :
ISBN 13 : 9781634824729
Total Pages : 455 pages
Book Rating : 4.8/5 (247 download)

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Book Synopsis Comprehensive Guide for Nanocoatings Technology, Volume 1 by : Mahmood Aliofkhazraei

Download or read book Comprehensive Guide for Nanocoatings Technology, Volume 1 written by Mahmood Aliofkhazraei and published by . This book was released on 2015 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first volume of a four volume set of the Comprehensive Guide for Nanocoatings Technology. Nanocoatings are a kind of thin film with at least one nanometric dimension. The main difference between nano and ordinary coatings is in their structure and properties. To recognize these differences, it is required to study the properties and structure of nanocoatings. The properties of every substance are controlled by their constituents. In this regard, properties of coatings depend on the constituent grains and particles. The chemical, physical, and mechanical properties of nanocoatings including their electrical resistance, permeability, corrosion and abrasion resistance, and magnetic properties, which are a function of structure and particle size of coatings. It is evident that use of these features creates many potential applications. This volume mainly discusses the deposition and growth mechanism of nanocoatings. There are 16 chapters in this volume; each one includes examples of these interesting materials, supported by appropriate figures for better clarification.

Inorganic and Environmental Materials

Author : Kenjiro Fujimoto
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038265276
Total Pages : 290 pages
Book Rating : 4.0/5 (382 download)

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Book Synopsis Inorganic and Environmental Materials by : Kenjiro Fujimoto

Download or read book Inorganic and Environmental Materials written by Kenjiro Fujimoto and published by Trans Tech Publications Ltd. This book was released on 2014-06-24 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected, peer reviewed papers from the 2nd International Symposium on Inorganic Environmental Materials (ISIEM 2013), October 27-31, 2013, Rennes, France. The 55 papers are grouped as follows: Chapter 1: Cement/Gypsum/Lime, Chapter 2: Electric Current Assisted Sintering, Chapter 3: Energy and Sustainable Materials, Chapter 4: Environment-Related Materials, Chapter 5: Functional Materials, Chapter 6: Nanotechnology, Chapter 7: Science and Technology of Inorganic Materials, Chapter 8: Thermoelectric Materials