Search results: Found 7

Listing 1 - 7 of 7
Sort by
Ultrafine-Grained Metals

Author:
ISBN: 9783038425243 9783038425250 Year: Pages: VIII, 181 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering
Added to DOAB on : 2017-10-27 12:58:00
License:

Loading...
Export citation

Choose an application

Abstract

Ultrafine-grained metallic materials produced by severe plastic deformation methods are at the cutting edge of modern materials science. UFG-metals exhibit outstanding properties which make them very interesting for structural or functional engineering applications. Fifteen articles in this special issue address a broad variety of topics: New developments in severe plastic deformation techniques, advances in modeling and simulation of the severe plastic deformation processes, mechanical properties under monotonic and cyclic loading of homogenous and graded UFG structures, dominating deformation mechanisms in UFG materials, advances and strategies for high conductivity UFG-materials, correlation between severe plastic deformation parameters and resulting materials properties and peculiarities in the corrosion behavior of UFG materials. The book covers latest results on ultrafine-grained titanium, aluminum and copper alloys and on UFG iron and steels and thus provides a deep insight to current research activities in the field of ultrafine-grained metals.

Metallmatrixverbunde mit Verstärkungselementen aus metallischem Glas Ni??Nb??Ta?? – Herstellung und Charakterisierung

Author:
Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783731507826 Year: Volume: 75 Pages: XVI, 402 p. DOI: 10.5445/KSP/1000081432 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
License:

Loading...
Export citation

Choose an application

Abstract

AlSi12-based metal matrix composites using metallic glass Ni??Nb??Ta?? as reinforcement were produced via gas pressure melt infiltration technique. Comprehensive investigations were performed to determine the composite´s microstructural, mechanical and thermal properties as well as damage mechanisms. The results contribute to a better understanding on the material´s processing-structure-property relations.

Metallic Glasses

Authors: ---
ISBN: 9783038425076 9783038425069 Year: Pages: 194 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-01-04 14:58:25
License:

Loading...
Export citation

Choose an application

Abstract

Due to their amorphous character and the concomitant lack of dislocations, metallic glasses exhibit physical and chemical properties that are quite different from those of other solid materials. For example, they can be twice as strong as steels, exhibit superior soft magnetic behavior and outstanding corrosion resistance and, sometimes, interesting catalytic properties, thus having potential for a widespread range of technological applications. The aim of this book is to address, from both experimental and theoretical points of view, some of the challenges to improve the glass forming ability of these materials, to optimize their overall mechanical performance, and to enhance their functional properties. Through the contributions from different renowned authors in the field, new prospects towards the development of innovative compositions and novel applications, particularly in devices with micrometer and submicrometer sizes, are provided, where the full potential of these glassy materials is being achieved.

Metals Challenged by Neutron and Synchrotron Radiation

Author:
ISBN: 9783038426790 9783038426806 Year: Pages: 288 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mining and Metallurgy
Added to DOAB on : 2018-02-08 13:10:36
License:

Loading...
Export citation

Choose an application

Abstract

Neutron and Synchrotron radiation methods have matured to become powerful techniques for the study of a vast range of materials, including metals. The characterization methods comprise the categories of diffraction, spectroscopy and imaging, which themselves can alter greatly in detail, to include hundreds of variants, problems and sample environments. In a similar way, their applications to metals and hard condensed matter materials cover disciplines spanning engineering, physics, chemistry, materials science and their derivatives such as geology, energy storage, etc. … The present book, “Metals Challenged by Neutron and Synchrotron Radiation” is a first compilation in Metals of 20 original and review works on research utilizing or designing those state-of-the-art techniques at modern facilities. The Editorial reviews the context of and identifies thematic links between these papers, grouping them into five interwoven themes, namely Sintering Techniques and Microstructure Evolution, Titanium Aluminides and Titanium Alloys Under Extreme Conditions, Metallic Glass and Disordered Crystals, In Situ and Time-Resolved Response to Mechanical Load and Shock, and Thin Films and Layers. This book represents a good cross-section of the status quo of neutron and synchrotron radiation with respect to questions in the metallurgical field, which by far is not exhaustive. Nor are the methods and other materials, which motivated me to the creation of a new sister-journal, entitled Quantum Beam Science. With this, I would like to thank all authors, reviewers and contributors behind the scene for the creation of this work, presenting to you a piece of interesting reading and reference literature.

Small Scale Deformation using Advanced Nanoindentation Techniques

Authors: ---
ISBN: 9783038979661 9783038979678 Year: Pages: 168 DOI: 10.3390/books978-3-03897-967-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2019-06-26 08:44:06
License:

Loading...
Export citation

Choose an application

Abstract

Small scale mechanical deformations have gained a significant interest over the past few decades, driven by the advances in integrated circuits and microelectromechanical systems. One of the most powerful and versatile characterization methods is the nanoindentation technique. The capabilities of these depth-sensing instruments have been improved considerably. They can perform experiments in vacuum and at high temperatures, such as in-situ SEM and TEM nanoindenters. This allows researchers to visualize mechanical deformations and dislocations motion in real time. Time-dependent behavior of soft materials has also been studied in recent research works. This Special Issue on ""Small Scale Deformation using Advanced Nanoindentation Techniques""; will provide a forum for researchers from the academic and industrial communities to present advances in the field of small scale contact mechanics. Materials of interest include metals, glass, and ceramics. Manuscripts related to deformations of biomaterials and biological related specimens are also welcome. Topics of interest include, but are not limited to:

Creep and High Temperature Deformation of Metals and Alloys

Authors: ---
ISBN: 9783039218783 9783039218790 Year: Pages: 212 DOI: 10.3390/books978-3-03921-879-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Mining and Metallurgy
Added to DOAB on : 2020-01-07 09:08:26
License:

Loading...
Export citation

Choose an application

Abstract

By the late 1940s, and since then, the continuous development of dislocation theories have provided the basis for correlating the macroscopic time-dependent deformation of metals and alloys—known as creep—to the time-dependent processes taking place within the metals and alloys. High-temperature deformation and stress relaxation effects have also been explained and modeled on similar bases. The knowledge of high-temperature deformation as well as its modeling in conventional or unconventional situations is becoming clearer year by year, with new contemporary and better performing high-temperature materials being constantly produced and investigated.This book includes recent contributions covering relevant topics and materials in the field in an innovative way. In the first section, contributions are related to the general description of creep deformation, damage, and ductility, while in the second section, innovative testing techniques of creep deformation are presented. The third section deals with creep in the presence of complex loading/temperature changes and environmental effects, while the last section focuses on material microstructure–creep correlations for specific material classes. The quality and potential of specific materials and microstructures, testing conditions, and modeling as addressed by specific contributions will surely inspire scientists and technicians in their own innovative approaches and studies on creep and high-temperature deformation.

Computational Methods for Fracture

Author:
ISBN: 9783039216864 9783039216871 Year: Pages: 404 DOI: 10.3390/books978-3-03921-687-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Computer Science
Added to DOAB on : 2019-12-09 11:49:16
License:

Loading...
Export citation

Choose an application

Abstract

This book offers a collection of 17 scientific papers about the computational modeling of fracture. Some of the manuscripts propose new computational methods and/or how to improve existing cutting edge methods for fracture. These contributions can be classified into two categories: 1. Methods which treat the crack as strong discontinuity such as peridynamics, scaled boundary elements or specific versions of the smoothed finite element methods applied to fracture and 2. Continuous approaches to fracture based on, for instance, phase field models or continuum damage mechanics. On the other hand, the book also offers a wide range of applications where state-of-the-art techniques are employed to solve challenging engineering problems such as fractures in rock, glass, concrete. Also, larger systems such as fracture in subway stations due to fire, arch dams, or concrete decks are studied.

Keywords

plate --- FSDT --- HSDT --- Mindlin --- incompatible approximation --- fracture --- screened-Poisson model --- gradient-enhanced model --- damage-plasticity model --- implicit gradient-enhancement --- rock --- shear failure --- elastoplastic behavior --- extended scaled boundary finite element method (X-SBFEM) --- stress intensity factors --- fracture process zone (FPZ) --- thermomechanical analysis --- moderate fire --- finite element simulations --- metallic glass matrix composite --- finite element analysis --- shear band --- microstructure --- ductility --- peridynamics --- fatigue --- rolling contact --- damage --- rail squats --- cracks --- steel reinforced concrete frame --- reinforced concrete core tube --- progressive collapse analysis --- loss of key components --- self-healing --- damage-healing mechanics --- super healing --- anisotropic --- brittle material --- Brittle Fracture --- cell-based smoothed-finite element method (CS-FEM) --- Phase-field model --- ABAQUS UEL --- the Xulong arch dam --- yielding region --- cracking risk --- overall stability --- dam stress zones --- concrete creep --- prestressing stress --- compressive stress --- FE analysis --- force transfer --- grouting --- fracture network modeling --- numerical simulation --- fluid–structure interaction --- bulk damage --- brittle fracture --- rock fracture --- random fracture --- Mohr-Coulomb --- Discontinuous Galerkin --- EPB shield machine --- conditioned sandy pebble --- particle element model --- parameters calibration --- geometric phase --- photonic orbital angular momentum --- topological insulator --- topological photonic crystal --- fatigue crack growth --- surface crack --- crack shape change --- three-parameter model --- LEFM --- XFEM/GFEM --- SBFEM --- phase field --- n/a

Listing 1 - 7 of 7
Sort by
Narrow your search