Mechanical Properties and Deformation Behavior of Materials Having Ultra-Fine Microstructures

Mechanical Properties and Deformation Behavior of Materials Having Ultra-Fine Microstructures PDF Author: M. Nastasi
Publisher: Springer Science & Business Media
ISBN: 9401117659
Category : Technology & Engineering
Languages : en
Pages : 616

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Book Description
In an attempt to meet the demand for new ultra-high strength materials, the processing of novel material configurations with unique microstructure is being explored in systems which are further and further from equilibrium. One such class of emerging materials is the so-called nanophased or nanostructured materials. This class of materials includes metals and alloys, ceramics, and polymers characterized by controlled ultra-fine microstructural features in the form oflayered, fibrous, or phase and grain distribution. While it is clear that these materials are in an early stage of development, there is now a sufficient body of literature to fuel discussion of how the mechanical properties and deformation behavior can be controlled through control of the microstructure. This NATO-Advanced Study Institute was convened in order to assess our current state of knowledge in the field of mechanical properties and deformation behavior in materials with ultra fine microstructure, to identify opportunities and needs for further research, and to identify the potential for technological applications. The Institute was the first international scientific meeting devoted to a discussion on the mechanical properties and deformation behavior of materials having grain sizes down to a few nanometers. Included in these discussions were the topics of superplasticity, tribology, and the supermodulus effect. Lectures were also presented which covered a variety of other themes including synthesis, characterization, thermodynamic stability, and general physical properties.

Mechanical Properties and Deformation Behavior of Materials Having Ultra-Fine Microstructures

Mechanical Properties and Deformation Behavior of Materials Having Ultra-Fine Microstructures PDF Author: M. Nastasi
Publisher: Springer Science & Business Media
ISBN: 9401117659
Category : Technology & Engineering
Languages : en
Pages : 616

Get Book Here

Book Description
In an attempt to meet the demand for new ultra-high strength materials, the processing of novel material configurations with unique microstructure is being explored in systems which are further and further from equilibrium. One such class of emerging materials is the so-called nanophased or nanostructured materials. This class of materials includes metals and alloys, ceramics, and polymers characterized by controlled ultra-fine microstructural features in the form oflayered, fibrous, or phase and grain distribution. While it is clear that these materials are in an early stage of development, there is now a sufficient body of literature to fuel discussion of how the mechanical properties and deformation behavior can be controlled through control of the microstructure. This NATO-Advanced Study Institute was convened in order to assess our current state of knowledge in the field of mechanical properties and deformation behavior in materials with ultra fine microstructure, to identify opportunities and needs for further research, and to identify the potential for technological applications. The Institute was the first international scientific meeting devoted to a discussion on the mechanical properties and deformation behavior of materials having grain sizes down to a few nanometers. Included in these discussions were the topics of superplasticity, tribology, and the supermodulus effect. Lectures were also presented which covered a variety of other themes including synthesis, characterization, thermodynamic stability, and general physical properties.

Intergranular and Interphase Boundaries in Materials

Intergranular and Interphase Boundaries in Materials PDF Author: Pavel LejĨek
Publisher: Scitec Publications
ISBN:
Category : Mathematics
Languages : en
Pages : 844

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Book Description
Continuing the scope of the preceding Conferences on Intergranular and Interphase Boundaries in Materials, the present conference focused on the atomic-level modeling of interfaces, the structural and chemical characterization of internal interfaces, on their thermodynamic, kinetic, mechanical, electrical, magnetic behavior and high-Tc superconductivity, and on the application of current knowledge to the design of polycrystalline materials having improved properties. Particular attention was paid to non-equilibrium segregation in irradiated materials.

Grain Boundaries and Crystalline Plasticity

Grain Boundaries and Crystalline Plasticity PDF Author: Louisette Priester
Publisher: John Wiley & Sons
ISBN: 1118603109
Category : Technology & Engineering
Languages : en
Pages : 240

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Book Description
The main purpose of this book is to put forward the fundamental role of grain boundaries in the plasticity of crystalline materials. To understand this role requires a multi-scale approach to plasticity: starting from the atomic description of a grain boundary and its defects, moving on to the elemental interaction processes between dislocations and grain boundaries, and finally showing how the microscopic phenomena influence the macroscopic behaviors and constitutive laws. It involves bringing together physical, chemical and mechanical studies. The investigated properties are: deformation at low and high temperature, creep, fatigue and rupture.

Ceramic-Matrix Composites

Ceramic-Matrix Composites PDF Author: I M Low
Publisher: Woodhead Publishing
ISBN: 1845691067
Category : Technology & Engineering
Languages : en
Pages : 633

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Book Description
The advent of engineering-designed polymer matrix composites in the late 1940s has provided an impetus for the emergence of sophisticated ceramic matrix composites. The development of CMCs is a promising means of achieving lightweight, structural materials combining high temperature strength with improved fracture toughness, damage tolerance and thermal shock resistance. Considerable research effort is being expended in the optimisation of ceramic matrix composite systems, with particular emphasis being placed on the establishment of reliable and cost-effective fabrication procedures.Ceramic matrix composites consists of a collection of chapters reviewing and describing the latest advances, challenges and future trends in the microstructure and property relationship of five areas of CMCs. Part one focuses on fibre, whisker and particulate-reinforced ceramic matrix composites, part two explores graded and layered ceramics, while the five chapters in part three cover nanostructured CMCs in some detail. Refractory and speciality ceramic composites are looked at in part four, with chapters on magnesia-spinel composite refractory materials, thermal shock of CMCs and superplastic CMCs. Finally, part four is dedicated to non-oxide ceramic composites.Ceramic matrix composites is a comprehensive evaluation of all aspects of the interdependence of processing, microstructure, properties and performance of each of the five categories of CMC, with chapters from experienced and established researchers. It will be essential for researchers and engineers in the field of ceramics and more widely, in the field of inorganic materials. - Looks at the latest advances, challenges and future trends - Compiled by experienced and established researchers in the field - Essential for researchers and engineers

Intergranular and Interphase Boundaries in Materials

Intergranular and Interphase Boundaries in Materials PDF Author: Ph. Komninou
Publisher: Trans Tech Publications Ltd
ISBN: 3035704767
Category : Technology & Engineering
Languages : en
Pages : 843

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Book Description
Proceedings of the 6th International Conference on Intergranular and Interphase Boundaries in Materials (iib 92) held in Thessaloniki, Greece, 1992

Energy Research Abstracts

Energy Research Abstracts PDF Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 354

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Book Description


The Structure of Intercrystalline Interfaces

The Structure of Intercrystalline Interfaces PDF Author: Witold Lojkowski
Publisher:
ISBN:
Category : Crystalline interfaces
Languages : en
Pages : 252

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Book Description


Toughening Mechanisms in Quasi-Brittle Materials

Toughening Mechanisms in Quasi-Brittle Materials PDF Author: S.P. Shah
Publisher: Springer Science & Business Media
ISBN: 9401133883
Category : Science
Languages : en
Pages : 590

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Book Description
A variety of ceramic materials has been recently shown to exhibit nonlinear stress strain behavior. These materials include transformation-toughened zirconia which undergoes a stress-induced crystallographic transformation in the vicinity of a propagating crack, microcracking ceramics, and ceramic-fiber reinforced ceramic matrices. Since many of these materials are under consideration for structural applications, understanding fracture in these quasi-brittle materials is essential. Portland cement concrete is a relatively brittle material. As a result mechanical behavior of concrete, conventionally reinforced concrete, prestressed concrete and fiber reinforced concrete is critically influenced by crack propagation. Crack propagation in concrete is characterized by a fracture process zone, microcracking, and aggregate bridging. Such phenomena give concrete toughening mechanisms, and as a result, the macroscopic response of concrete can be characterized as that of a quasi-brittle material. To design super high performance cement composites, it is essential to understand the complex fracture processes in concrete. A wide range of concern in design involves fracture in rock masses and rock structures. For example, prediction of the extension or initiation of fracture is important in: 1) the design of caverns (such as underground nuclear waste isolation) subjected to earthquake shaking or explosions, 2) the production of geothermal and petroleum energy, and 3) predicting and monitoring earthquakes. Depending upon the grain size and mineralogical composition, rock may also exhibit characteristics of quasi-brittle materials.

Ceramic Microstructures

Ceramic Microstructures PDF Author: Antoni P. Tomsia
Publisher: Springer Science & Business Media
ISBN: 1461553938
Category : Technology & Engineering
Languages : en
Pages : 841

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Book Description
This volume, titled Proceedings of the International Materials Symposium on Ce ramic Microstructures: Control at the Atomic Level summarizes the progress that has been achieved during the past decade in understanding and controlling microstructures in ceram ics. A particular emphasis of the symposium, and therefore of this volume, is advances in the characterization, understanding, and control of micro structures at the atomic or near-atomic level. This symposium is the fourth in a series of meetings, held every ten years, devoted to ceramic microstructures. The inaugural meeting took place in 1966, and focussed on the analysis, significance, and production of microstructure; the symposium emphasized the need for, and importance of characterization in achieving a more complete understanding of the physical and chemical characteristics of ceramics. A consensus emerged at that meeting on the critical importance of characterization in achieving a more complete understanding of ceramic properties. That point of view became widely accepted in the ensuing decade. The second meeting took place in 1976 at a time of world-wide energy shortages and thus emphasized energy-related applications of ceramics, and more specifically, microstructure-property relationships of those materials. The third meeting, held in 1986, was devoted to the role that interfaces played both during processing, and in influencing the ultimate properties of single and polyphase ceramics, and ceramic-metal systems.

Handbook of Semiconductor Technology, Volume 1

Handbook of Semiconductor Technology, Volume 1 PDF Author: Kenneth A. Jackson
Publisher: Wiley-VCH
ISBN: 9783527298341
Category : Technology & Engineering
Languages : en
Pages : 852

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Book Description
Covering the structure and properties of semiconductors, this volume places particular emphasis on concepts relevant to semiconductor technology. Of interest to physicists and engineers in research and in the electronics industry, this is a valuable reference source and state-of-the-art review by the world's top authors.