Interaction couches d'oxyde et résistance à la fatigue de l'acier inoxydable 316L PDF Download

Author: Cyril Vernault
Publisher:
ISBN:
Category :
Languages : fr
Pages : 297

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Book Description
UNE DES CAUSES DE RUPTURE DE PIECES EN SERVICE PROVIENT DE LEUR SOLLICITATION PAR FATIGUE. L'ENDOMMAGEMENT QUI EN RESULTE EST ACCRU ET PARFOIS MODIFIE PAR LA PRESENCE D'UN ENVIRONNEMENT OXYDANT. DANS CE CONTEXTE, NOUS AVONS ETUDIE L'INFLUENCE DES COUCHES D'OXYDE SUR LES MECANISMES DE FISSURATION PAR FATIGUE D'UN ACIER INOXYDABLE TYPE 316L. CECI A NECESSITE LA CARACTERISATION DES PROCESSUS ET DES PRODUITS D'OXYDATION A 300C ET 600C SUR UN MATERIAU NON PRE-DEFORME AINSI QUE PRE-DEFORME PAR FATIGUE. NOUS AVONS ALORS, ETABLI L'EFFET INTRINSEQUE DE CES COUCHES SUR L'ENDOMMAGEMENT EN FATIGUE PLASTIQUE DU 316L, PAR LA COMPARAISON D'EPROUVETTES PRE-OXYDEES OU NON PRE-OXYDEES SOLLICITEES SOUS VIDE. CECI A PERMIS DE DEMONTRER L'EXISTENCE D'INTERACTIONS ENTRE LA PLASTICITE ET LES JOINTS DE GRAINS OXYDES. CELLES-CI CONDUISENT A UNE AUGMENTATION DES FISSURES INTERGRANULAIRES. DES LORS, LES CONDITIONS DE SOLLICITATION OU LA TENUE EN FATIGUE EST CONTROLEE PAR LE STADE D'AMORCAGE (FATIGUE ENDURANCE) SONT OPTIMALES POUR OBSERVER UN EFFET SIGNIFICATIF DES OXYDES SUR LA DUREE DE VIE.

Author: Laurent Sabatier
Publisher:
ISBN:
Category :
Languages : fr
Pages : 223

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Book Description
Cette thèse vise à évaluer ce que les techniques d'analyses locales récentes que sont l'EBSD et l'AFM permettent d'apporter dans l'étude des conditions de déformation et d'endommagement en surface d'un acier inoxydable 316L sollicité en fatigue (LCF). Une première partie concerne la caractérisation de la structure fine des bandes de glissements produites au cours du cyclage. La morphologie des extrusions-intrusions y est étudiée à l'échelle nanométrique (AFM) en relation directe avec les configurations cristallographiques locales (EBSD). L'influence de l'air ambiant y est étudiée par comparaison avec des résultats établis sous vide. Une seconde partie porte sur les effets induits par deux couches minces influant sur les processus d'émergence des bandes de glissement : un film (0,1æm) de NiTi de structure amorphe ayant des effets bénéfiques sur la durée de vie du 316L et une couche d'oxydes produite à haute température dont les caractéristiques dépendent de l'orientation des grains du substrat.

Author: Noam Eliaz
Publisher: Springer Science & Business Media
ISBN: 1461439426
Category : Technology & Engineering
Languages : en
Pages : 521

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Book Description
This book reviews the current understanding of the mechanical, chemical and biological processes that are responsible for the degradation of a variety of implant materials. All 18 chapters will be written by internationally renowned experts to address both fundamental and practical aspects of research into the field. Different failure mechanisms such as corrosion, fatigue, and wear will be reviewed, together with experimental techniques for monitoring them, either in vitro or in vivo. Procedures for implant retrieval and analysis will be presented. A variety of biomaterials (stainless steels, titanium and its alloys, nitinol, magnesium alloys, polyethylene, biodegradable polymers, silicone gel, hydrogels, calcium phosphates) and medical devices (orthopedic and dental implants, stents, heart valves, breast implants) will be analyzed in detail. The book will serve as a broad reference source for graduate students and researchers studying biomedicine, corrosion, surface science, and electrochemistry.

Author: Brenda J. Little
Publisher: John Wiley & Sons
ISBN: 0470112441
Category : Science
Languages : en
Pages : 295

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Book Description
A multi-disciplinary, multi-industry overview of microbiologically influenced corrosion, with strategies for diagnosis and control or prevention Microbiologically Influenced Corrosion helps engineers and scientists understand and combat the costly failures that occur due to microbiologically influenced corrosion (MIC). This book combines recent findings from diverse disciplines into one comprehensive reference. Complete with case histories from a variety of environments, it covers: Biofilm formation Causative organisms, relating bacteria and fungi to corrosion mechanisms for groups of metals Diagnosing and monitoring MIC Electrochemical techniques, with an overview of methods for detection of MIC The impact of alloying elements, including antimicrobial metals, and design features on MIC MIC of non-metallics Strategies for control or prevention of MIC, including engineering, chemical, and biological approaches This is a valuable, all-inclusive reference for corrosion scientists, engineers, and researchers, as well as designers, managers, and operators.

Author: Edward A. Metzbower
Publisher: ASM International(OH)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 286

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Author: Reza Javaherdashti
Publisher: Springer
ISBN: 3319443062
Category : Technology & Engineering
Languages : en
Pages : 230

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Book Description
Significantly extended from the first edition, this book presents the basics of microbiologically influenced corrosion (MIC) in an accessible and concise manner. It explores strategies for recognizing, understanding, mitigating and preventing this type of corrosion, and investigates this topic from the point of view of an engineer. Chapters cover issues including stress corrosion cracking and microbial corrosion, the pros and cons of biocides, the involvement of magnetic bacteria in microbial corrosion, and cathodic protection based on recent research in microbial environments. The 2nd Edition provides new material examining the following topics: *The corrosion-related bacteria clostridia *Mathematical modelling of MIC, in particular fuzzy logic *A comparison of culture-independent methods with culture-dependent methods *Further practical strategies for dealing with MIC *Natural biocidesThis book has provided course material for the author’s microbial corrosion workshops around the world, and it presents an invaluable resource to corrosion and integrity professionals working in a wide range of industries including power generation, oil and gas, marine, and mining. It is also intended for students and academics of corrosion engineering, materials science, microbiology, chemical engineering and welding.

Author: Y. Frank Cheng
Publisher: John Wiley & Sons
ISBN: 1118537084
Category : Science
Languages : en
Pages : 292

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Book Description
Explains why pipeline stress corrosion cracking happens and how it can be prevented Pipelines sit at the heart of the global economy. When they are in good working order, they deliver fuel to meet the ever-growing demand for energy around the world. When they fail due to stress corrosion cracking, they can wreak environmental havoc. This book skillfully explains the fundamental science and engineering of pipeline stress corrosion cracking based on the latest research findings and actual case histories. The author explains how and why pipelines fall prey to stress corrosion cracking and then offers tested and proven strategies for preventing, detecting, and monitoring it in order to prevent pipeline failure. Stress Corrosion Cracking of Pipelines begins with a brief introduction and then explores general principals of stress corrosion cracking, including two detailed case studies of pipeline failure. Next, the author covers: Near-neutral pH stress corrosion cracking of pipelines High pH stress corrosion cracking of pipelines Stress corrosion cracking of pipelines in acidic soil environments Stress corrosion cracking at pipeline welds Stress corrosion cracking of high-strength pipeline steels The final chapter is dedicated to effective management and mitigation of pipeline stress corrosion cracking. Throughout the book, the author develops a number of theoretical models and concepts based on advanced microscopic electrochemical measurements to help readers better understand the occurrence of stress corrosion cracking. By examining all aspects of pipeline stress corrosion cracking—the causes, mechanisms, and management strategies—this book enables engineers to construct better pipelines and then maintain and monitor them to ensure safe, reliable energy supplies for the world.

Author: Igor Bezverkhyy
Publisher: Trans Tech Publications Ltd
ISBN: 3038137030
Category : Technology & Engineering
Languages : en
Pages : 600

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Book Description
The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.

Author: Florian B. Mansfeld
Publisher: CRC Press
ISBN: 9780824776275
Category : Mathematics
Languages : en
Pages : 476

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Book Description
This book discusses the mechanisms that have been proposed for the main corrosion phenomena, providing a thorough discussion of the pros and cons of the various corrosion mechanisms with support by experimental and theoretical results.

Author: Hendra Hermawan
Publisher: Springer Science & Business Media
ISBN: 3642311709
Category : Technology & Engineering
Languages : en
Pages : 73

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Book Description
This book in the emerging research field of biomaterials covers biodegradable metals for biomedical applications. The book contains two main parts where each of them consists of three chapters. The first part introduces the readers to the field of metallic biomaterials, exposes the state of the art of biodegradable metals, and reveals its application for cardiovascular implants. Some fundamental aspects to give basic understanding on metals for further review on the degradable ones is covered in chapter one. The second chapter introduces the concept of biodegradable metals, it's state of the art and discuses a shifted paradigm from inert to bioactive, from corrosion resistant to corrodible metals. The third chapter focuses on the challenges and opportunities of using biodegradable metals for cardiovascular applications. The second part exposes an example of biodegradable metals from its concept to applications where a complete study on metallic biodegradable stent is detailed from materials design, development, testing till the implant fabrication. The forth chapter reveals new alloys development devoted for metallic biodegradable stent based on required criteria derrived from clinical needs and current nondegradable stents properties. Degradation of the alloys in simulated arterial conditions and its effect to cells are exposed in chapter five. The both chapters are concluded with a benchmarking of some more recent researches on materials development and testing for biodegradable stents. Chapter six reveals the tranformation process of the materials into stent prototypes where a standard process for making 316L stainless steel stents was followed. The book is completed by a perspective on the use of biodegradable metals for biomedical applications in the era of tissue engineering.