June 12, 2021

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Nanostructured Metals and Alloys

Nanostructured Metals and Alloys
Author : S. H. Whang
Publisher : Woodhead Publishing
Release Date : 2016-06
Category : Science
Total pages :840
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Tensile strength, fatigue strength and ductility are important properties of nanostructured metallic materials, which make them suitable for use in applications where strength or strength-to-weight ratios are important. Nanostructured metals and alloys reviews the latest technologies used for production of these materials, as well as recent advances in research into their structure and mechanical properties. One of the most important issues facing nanostructured metals and alloys is how to produce them. Part one describes the different methods used to process bulk nanostructured metals and alloys, including chapters on severe plastic deformation, mechanical alloying and electrodeposition among others. Part two concentrates on the microstructure and properties of nanostructured metals, with chapters studying deformation structures such as twins, microstructure of ferrous alloys by equal channel angular processing, and characteristic structures of nanostructured metals prepared by plastic deformation. In part three, the mechanical properties of nanostructured metals and alloys are discussed, with chapters on such topics as strengthening mechanisms, nanostructured metals based on molecular dynamics computer simulations, and surface deformation. Part four focuses on existing and developing applications of nanostructured metals and alloys, covering topics such as nanostructured steel for automotives, steel sheet and nanostructured coatings by spraying. With its distinguished editor and international team of contributors, Nanostructured metals and alloys is a standard reference for manufacturers of metal components, as well as those with an academic research interest in metals and materials with enhanced properties.

Atomic-scale Modeling of Nanostructured Metals and Alloys

Atomic-scale Modeling of Nanostructured Metals and Alloys
Author : Alexander Stukowski
Publisher : Unknown
Release Date : 2010
Category :
Total pages :155
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PROPERTIES AND NANOSTRUCTURES OF NANO-MATERIALS PROCESSED BY SEVERE PLASTIC DEFORMATION (SPD).

PROPERTIES AND NANOSTRUCTURES OF NANO-MATERIALS PROCESSED BY SEVERE PLASTIC DEFORMATION (SPD).
Author : Anonim
Publisher : Unknown
Release Date : 2001
Category :
Total pages :129
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Metallic materials usually exhibit higher strength but lower ductility after being plastically deformed by conventional techniques such as rolling, drawing and extrusion. In contrast, nanostructured metals and alloys processed by severe plastic deformation (SPD) have demonstrated both high strength and high ductility. This extraordinary mechanical behavior is attributed to the unique nanostructures generated by SPD processing. The combination of ultrafine grain size and high-density dislocations appears to enable deformation by new mechanisms not active in coarse-grained metals and alloys. These results demonstrate the possibility of tailoring the microstructures of metals and alloys by SPD to obtain superior mechanical properties. Nanostructured metals and alloys processed by SPD techniques have unique nanostructures not observed in nano-materials synthesized by other techniques such as the consolidation of nanopowders. The SPD-generated nanostructures have many features related to deformation, including high dislocation densities, and high- and low-angle grain boundaries in equilibrium or non-equilibrium states. Future studies are needed to investigate the deformation mechanisms that relate the unique nanostructures with the superior mechanical properties exhibited by SPD-processed metals and alloys.

Nanostructured Metals and Alloys

Nanostructured Metals and Alloys
Author : S H Whang
Publisher : Elsevier
Release Date : 2011-03-22
Category : Technology & Engineering
Total pages :840
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Tensile strength, fatigue strength and ductility are important properties of nanostructured metallic materials, which make them suitable for use in applications where strength or strength-to-weight ratios are important. Nanostructured metals and alloys reviews the latest technologies used for production of these materials, as well as recent advances in research into their structure and mechanical properties. One of the most important issues facing nanostructured metals and alloys is how to produce them. Part one describes the different methods used to process bulk nanostructured metals and alloys, including chapters on severe plastic deformation, mechanical alloying and electrodeposition among others. Part two concentrates on the microstructure and properties of nanostructured metals, with chapters studying deformation structures such as twins, microstructure of ferrous alloys by equal channel angular processing, and characteristic structures of nanostructured metals prepared by plastic deformation. In part three, the mechanical properties of nanostructured metals and alloys are discussed, with chapters on such topics as strengthening mechanisms, nanostructured metals based on molecular dynamics computer simulations, and surface deformation. Part four focuses on existing and developing applications of nanostructured metals and alloys, covering topics such as nanostructured steel for automotives, steel sheet and nanostructured coatings by spraying. With its distinguished editor and international team of contributors, Nanostructured metals and alloys is a standard reference for manufacturers of metal components, as well as those with an academic research interest in metals and materials with enhanced properties.

Advances in Nanostructured Materials Processed by Severe Plastic Deformation

Advances in Nanostructured Materials Processed by Severe Plastic Deformation
Author : Xiaozhou Liao,Yonghao Zhao
Publisher : Trans Tech Publication
Release Date : 2008
Category : Science
Total pages :154
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Nanostructured materials, in which the structural features (e.g., grains and/or domains separated by low-angle grain boundaries) are smaller than 100nm in at least one dimension, have attracted worldwide research interest for more than a decade because of their unique properties. For example, the combination of high strength with high ductility has been reported for some nanostructured metals and alloys: this is a rare, if not impossible, combination of mechanical properties for coarse-grained metals and alloys. Among the many techniques available for producing nanostructured materials, severe plastic deformation (SPD)26 is26 the most popular and most rapidly developing one. The presenteditors invited prominent researchers in this field to contribute research and review papers, on the advances made in nanostructured materials processing by SPD, to this special-topic book. The ten papers cover a wide range of issues that are of primordial interest to the SPD research community including: mechanical properties, microstructures, theoretical aspects of plastic behavior and recent development in practical SPD techniques. This book will therefore be essential reading for those having an interest in studying or using the SPD method.

Recent Developments in the Processing and Applications of Structural Metals and Alloys

Recent Developments in the Processing and Applications of Structural Metals and Alloys
Author : Marcello Cabibbo,Stefano Spigarelli
Publisher : Trans Tech Publications Ltd
Release Date : 2008-10-21
Category : Technology & Engineering
Total pages :442
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Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume brings together the most exciting ideas of international, and especially European, researchers concerning the latest developments in severe plastic deformation techniques and in the thermomechanical processing of materials for both structural and functional applications. The areas of interest include not only the conventional hot- and cold-deformation of metals but also recently developed severe plastic deformation processes for the production of ultra-fine and nanostructured materials. In particular, the following specific topics are covered: Multifunctional nanostructured coatings, Modelling and recrystallization, Nanostructured materials and Severe plastic deformation, Hot plastic deformation, Process Mechanics and Microstructure.

Fatigue and Fracture of Nanostructured Materials

Fatigue and Fracture of Nanostructured Materials
Author : Pasquale Cavaliere
Publisher : Springer Nature
Release Date : 2020-11-28
Category : Science
Total pages :425
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This book describes the main approaches for production and synthesis of nanostructured metals and alloys, taking into account the fatigue behavior of materials in additive manufactured components. Depending on the material type, form, and application, a deep discussion of fatigue properties and crack behavior is also provided. Pure nanostructured metals, complex alloys and composites are further considered. Prof. Cavaliere’s examination is supported by the most up-to-date understanding from the scientific literature along with a thorough presentation of theory. Bringing together the widest range of perspective on its topic, the book is ideal for materials researchers, professional engineers in industry, and students interested in nanostructured materials, fracture/fatigue mechanics, and additive manufacturing. Describes in detail the relevance of nanostructures in additive manufacturing technologies; Includes sufficient breadth and depth on theoretical modelling of fatigue and crack behavior for use in the classroom; Identifies many open questions regarding different theories through experimental finding; Contextualizes the latest scientific results for readers in industry.

Understanding the Deformation Mechanisms in Nanostructured Metals by a Novel Discrete Crystal Plasticity Finite Element Model

Understanding the Deformation Mechanisms in Nanostructured Metals by a Novel Discrete Crystal Plasticity Finite Element Model
Author : Rui Yuan
Publisher : Unknown
Release Date : 2017
Category :
Total pages :146
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"Implementation of nanostructured metals and alloys for use in engineering applications requires a detailed knowledge of the underlying deformation mechanisms in these materials. It is well known that plastic deformation in metals and alloys is mainly mediated by dislocation activities. Nonetheless, TEM observations and atomistic simulations indicate that dislocation-mediated plasticity in nanostructured metals and alloys is significantly different from that in their coarse-grained counterparts. Therefore, this dissertation focuses on the exploration of the deformation mechanisms in nanostructured metals via crystal plasticity finite element modeling and simulation. A statistical grain boundary dislocation source model accounting for dislocation nucleation and slip events was developed and incorporated into a 3D discrete crystal plasticity finite element model to study the mechanical behaviors of nanostructured metals including nanocrystalline, nanotwinned and heterogeneous lamellar structured metals. It was found that a Hall-Petch scaling of strength emerged from grain size limitation on dislocation source length, and that the Hall-Petch slope depended sensitively on texture and was proportional to the Taylor factor. Furthermore, it was shown that experimentally observed scaling between yield strength and twin thickness in columnar-grained nanotwinned Cu arose from statistical variability in dislocation source length, and that reducing twin thickness could increase plastic anisotropy as a result of the increase in mean stress to emit dislocations. In addition, it was revealed that a heterogeneous lamellar structure consisting of a nanocrystalline layer sandwiched between two coarse-grained lamellae could effectively homogenize plastic strain in the nanocrystalline layer, leading to suppressed strain heterogeneity and enhanced ductility"--Abstract, page iv.

Advances in Nanostructured Materials Processed by SPD

Advances in Nanostructured Materials Processed by SPD
Author : Xiao Zhou Liao,Yonghao Zhao
Publisher : Trans Tech Publications Ltd
Release Date : 2008-04-07
Category : Technology & Engineering
Total pages :166
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Nanostructured materials, in which the structural features (e.g., grains and/or domains separated by low-angle grain boundaries) are smaller than 100nm in at least one dimension, have attracted worldwide research interest for more than a decade because of their unique properties. For example, the combination of high strength with high ductility has been reported for some nanostructured metals and alloys: this is a rare, if not impossible, combination of mechanical properties for coarse-grained metals and alloys. Among the many techniques available for producing nanostructured materials, severe plastic deformation (SPD) is the most popular and most rapidly developing one.

High Performance Structural Materials

High Performance Structural Materials
Author : Yafang Han
Publisher : Springer
Release Date : 2018-04-17
Category : Technology & Engineering
Total pages :1068
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This proceedings volume gathers selected papers presented at the Chinese Materials Conference 2017 (CMC2017), held in Yinchuan City, Ningxia, China, on July 06-12, 2017. This book covers a wide range of powder metallurgy, high performance aluminum alloys, high performance titanium & titanium alloys, superalloys, metal matrix composite, space materials science and technology, rare metals, refractory metals and their applications, advanced ceramics materials, nanostructured metals and alloys. The Chinese Materials Conference (CMC) is the most important serial conference of the Chinese Materials Research Society (C-MRS) and has been held each year since the early 1990s. The 2017 installment included 37 Symposia covering four fields: Advances in energy and environmental materials; High performance structural materials; Fundamental research on materials; and Advanced functional materials. More than 5500 participants attended the congress, and the organizers received more than 700 technical papers. Based on the recommendations of symposium organizers and after peer reviewing, 490 papers have been included in the present proceedings, which showcase the latest original research results in the field of materials, achieved by more than 300 research groups at various universities and research institutes.

Surface Coating and Modification of Metallic Biomaterials

Surface Coating and Modification of Metallic Biomaterials
Author : Cuie Wen
Publisher : Woodhead Publishing
Release Date : 2015-03-31
Category : Technology & Engineering
Total pages :448
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Despite advances in alternative materials, metals are still the biomaterial of choice for a number of clinical applications such as dental, orthopedic and cardiac implants. However, there are a number of intrinsic problems associated with implanting metal in the biological environment, such as wear, corrosion, biocompatibility and toxicity, which must be addressed. Modern technology has enabled scientists to modify metal surfaces or apply special coatings to metals to improve their performance safety. Surface Coating and Modification of Metallic Biomaterials will discuss the most important modification techniques and coatings for metals, first covering the fundamentals of metals as a biomaterial and then exploring surface modification techniques and coatings. An expansive overview of surface modification techniques for biomedical use In-depth exploration of issues arising from metal biomaterial use Includes examples of applications in a clinical setting

Corrosion of Magnesium Alloys

Corrosion of Magnesium Alloys
Author : G L Song
Publisher : Woodhead Publishing
Release Date : 2011-04-08
Category : Technology & Engineering
Total pages :656
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The use of magnesium alloys is increasing in a range of applications, and their popularity is growing wherever lightweight materials are needed. This book provides a comprehensive account of the corrosion of magnesium alloys. It covers not only the corrosion performances and mechanisms of Mg alloys in conventional environments, such as sodium chloride solutions, but also looks at their corrosion behaviours in special media, like engine coolants and simulated body fluids. Part one covers fundamentals such as the corrosion electrochemistry, activity and passivity of magnesium and its alloys. Part two then considers the metallurgical effect in relation to the corrosion of magnesium alloys, including the role of micro-structure and earth-rare elements, the corrosion behaviour of magnesium-based bulk metallic glasses, and the corrosion of innovative magnesium alloys. Part three goes on to describe environmental influences on the corrosion of magnesium alloys, such as atmospheric corrosion, stress corrosion cracking, creep and fatigue behaviour, and galvanic corrosion. Finally, part four is concerned with various means of protecting magnesium alloys against corrosion through the use of aluminium electrodeposition, conversion and electrophoretic coatings, and anodisation. With its distinguished editor and team of contributors, this book is an invaluable resource for metallurgists, engineers and designers working with magnesium and its alloys, as well as professionals in the aerospace and automotive industries. Provides a comprehensive account of the corrosion of magnesium alloys covering fundamentals such as the corrosion electrochemistry, activity and passivity Reviews the metallurgical effect in relation to the corrosion of magnesium alloys, including the role of micro-structure and earth-rare elements Assesses environmental influences such as atmospheric corrosion, stress corrosion cracking, creep and fatigue behaviour, and galvanic corrosion

PROPERTIES AND NANOSTRUCTURES OF MATERIALS PROCESSED BY SPD TECHNIQUES.

PROPERTIES AND NANOSTRUCTURES OF MATERIALS PROCESSED BY SPD TECHNIQUES.
Author : Anonim
Publisher : Unknown
Release Date : 2001
Category :
Total pages :10
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Metallic materials usually exhibit higher strength but lower ductility after being plastically deformed by conventional techniques such as rolling, drawing and extrusion. In contrast, nanostructured metals and alloys processed by severe plastic deformation (SPD) have demonstrated both high strength and high ductility. This extraordinary mechanical behavior is attributed to the unique nanostructures generated by SPD processing. It demonstrates the possibility of tailoring the microstructures of metals and alloys by SPD to obtain superior mechanical properties. The SPD-generated nanostructures have many features related to deformation, including high dislocation densities, and high- and low-angle grain boundaries in equilibrium or non-equilibrium states. This paper reviews the mechanical properties and the defect structures of SPD-processed nanostructured materials. Keywords: strength, ductility, nanostructures, SPD, non-equilibrium grain boundary.

Bulk Nanostructured Materials

Bulk Nanostructured Materials
Author : Michael J. Zehetbauer,Yuntian Theodore Zhu
Publisher : John Wiley & Sons
Release Date : 2009-06-10
Category : Technology & Engineering
Total pages :736
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The processing and mechanical behaviour of bulk nanostructured materials are one of the most interesting new fields of research on advanced materials systems. Many nanocrystalline materials possess very high strength with still good ductility, and exhibit high values of fatigue resistance and fracture toughness. There has been continuing interest in these nanomaterials for use in structural and biomedical applications, and this has led to a large number of research programs worldwide. This book focuses on the processing techniques, microstructures, mechanical and physical properties, and applications of bulk nanostructured materials, as well as related fundamental issues. Only since recently can such bulk nanostructured materials be produced in large bulk dimensions, which opens the door to their commercial applications.

Bulk Nanostructured Materials

Bulk Nanostructured Materials
Author : Ruslan Z. Valiev,Alexander P. Zhilyaev,Terence G. Langdon
Publisher : John Wiley & Sons
Release Date : 2013-10-28
Category : Technology & Engineering
Total pages :456
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This book presents the most recent results in the area of bulk nanostructured materials and new trends in their severe plastic deformation (SPD) processing, where these techniques are now emerging from the domain of laboratory-scale research into the commercial production of various bulk nanomaterials. Special emphasis is placed on an analysis of the effect of nanostructures in materials fabricated by SPD on mechanical properties (strength and ductility, fatigue strength and life, superplasticity) and functional behavior (shape memory effects, magnetic and electric properties), as well as the numerous examples of their innovative applications. There is a high innovation potential for industrial applications of bulk nanomaterials for structural use (materials with extreme strength) as well as for functional applications such as nanomagnets, materials for hydrogen storage, thermoelectric materials, superconductors, catalysts, and biomedical implants.