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Book An Experimental Study of Deformation and Fracture of a Nanostructured Metallic Material

Download or read book An Experimental Study of Deformation and Fracture of a Nanostructured Metallic Material written by Nisrin Rizek Abdel Al and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical properties of materials strongly depend on their microstructure. Therefore, engineering the material's microstructure can lead to improving its mechanical properties. One method for enhancing the strength of metallic materials consists of refining the grain size down to the nanometer scale. Such nanostructured materials possess remarkable strength without using conventional metallurgical strengthening methods. However, this strength often comes at the expense of workhardening capacity, thus favoring flow localization and loss of ductility and toughness. The deformation behavior of nanostructured metallic materials has been extensively studied in the literature. However, little is known of their fracture behavior. In this study, the mechanical behavior of a nanostructured, nearly pure material is investigated in order to link processing conditions, microstructure, and fracture locus in stress space. With focus laid on BCC materials which can undergo a ductile-to-brittle transition, Interstitial- Free (IF) steel is chosen. The microstructure is refined using Severe Plastic Deformation (SPD) to achieve ultra-fine grain (UFG) materials with grain sizes in the range 100nm- 1 mu m. Equal Channel Angular Extrusion (ECAE) is used to obtain three types of UFG-IF steel microstructures by varying the extrusion rate and processing temperature. The deformation behavior is investigated for the three UFG materials using round smooth bars and is compared with the behavior of the as-received material. The damage behavior and the fracture mechanisms are studied using tensile round notched bars with varying notch radii. The findings indicate a remarkable combination of strength and notch ductility at room temperature, including for the material with the finest microstructure. They also point to the need for careful characterization of temperature effects before such materials can be considered in structural applications.

Book Nanostructured Materials by High Pressure Severe Plastic Deformation

Download or read book Nanostructured Materials by High Pressure Severe Plastic Deformation written by Yuntian T. Zhu and published by Springer Science & Business Media. This book was released on 2006-01-20 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, it was reported that nanostructured materials processed under high pressure by HPT and ECAP have an extraordinary combination of both high strength and high ductility, which are two desirable, but rarely co-existing properties. These findings indicate that high-pressure is a critical factor that can be employed to process nanostructured materials with superior mechanical, and possibly also physical, properties. It is the objective of this workshop to review our current knowledge, identify issues for future research, and discuss future directions on the processing and properties of nanostructured materials via SPD techniques, with a special emphasis on high-pressure effects. The 42 peer-reviewed papers in this book cover areas of high pressure effect on the nanostructure and properties of SPD-processed materials, fundamentals of nanostructured materials, development of high-pressure SPD technologies for commercializations, recent advances of SPD technologies as well as applications and future markets of SPD-processed nanostructured materials.

Book Deformation and Failure in Metallic Materials

Download or read book Deformation and Failure in Metallic Materials written by Kolumban Hutter and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the deformation and failure in metallic materials, summarizing the results of a research programme financed by the "Deutsche Forschungsgemeinschaft". It presents the recent engineering as well as mathematical key aspects of this field for a broad community. Its main focus is on the constitutive behaviour as well as the damage and fracture of metallic materials, covering their mathematical foundation, modelling and numerics, but also relevant experiments and their verification.

Book Deformation and Fracture in Technological Processes

Download or read book Deformation and Fracture in Technological Processes written by Robert V. Goldstein and published by Trans Tech Publications Ltd. This book was released on 2012-11-12 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special collection of peer-reviewed papers focuses on mechanical approaches to the experimental study and modeling of the deformation processes and defect formation accompanying various technologies. Volume is indexed by Thomson Reuters CPCI-S (WoS). A series of papers was devoted to the processes of metal-forming. Special attention was paid to the question of micro- and nano-structure adjustment during processes such as extrusion and microtube press-bending. Other papers covered models for damage accumulation and healing, as well as fracture prediction during metal forming.

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

Download or read book Mechanical Properties and Deformation Behavior of Materials Having Ultra Fine Microstructures written by M. Nastasi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Nanostructured Metals and Alloys

Download or read book Nanostructured Metals and Alloys written by S H Whang and published by Elsevier. This book was released on 2011-03-22 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Deformation and Fracture in Materials

Download or read book Deformation and Fracture in Materials written by Anoop Kumar Mukhopadhyay and published by CRC Press. This book was released on 2024-08-27 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information on the basics of deformation and fracture in materials and on current, state-of-the-art experimental and numerical/theoretical methods, including data-driven approaches in the deformation and fracture study of materials. The blend of experimental test methods and numerical techniques to study deformation and fracture in materials is discussed. In addition, the application of data-driven approaches in predicting material performance in different types of loading and loading environments is illustrated. Features: Includes clear insights on deformation and fracture in materials, with clear explanations of mechanics and defects relating to them Provides effective treatments of modern numerical simulation methods Explores applications of data-driven approaches such as artificial intelligence, machine learning, and computer vision Reviews simple and basic experimental techniques to understand the concepts of deformation and fracture in materials Details modeling and simulation strategies of mechanics of materials at different scales This book is aimed at researchers and graduate students in fracture mechanics, finite element methods, and materials science.

Book The Plaston Concept

Download or read book The Plaston Concept written by Isao Tanaka and published by Springer Nature. This book was released on 2022 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents the novel concept of plaston, which accounts for the high ductility or large plastic deformation of emerging high-performance structural materials, including bulk nanostructured metals, hetero-nanostructured materials, metallic glasses, intermetallics, and ceramics. The book describes simulation results of the collective atomic motion associated with plaston, by computational tools such as first-principle methods with predictive performance and large-scale atom-dynamics calculations. Multi-scale analyses with state-of-the art analytical tools nano/micro pillar deformation and nano-indentation experiments are also described. Finally, through collaborative efforts of experimental and computational work, examples of rational design and development of new structural materials are given, based on accurate understanding of deformation and fracture phenomena. This publication provides a valuable contribution to the field of structural materials research.

Book Experimental and Theoretical Investigations of Nanostructured Materials and Composites

Download or read book Experimental and Theoretical Investigations of Nanostructured Materials and Composites written by and published by . This book was released on 1995 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary research program was conducted to understand the mechanisms of deformation and fracture in nanostructured materials. Experiments on thin film nanostructured metals found that deformation occurred by grain boundary sliding and grain rotation in nanostructured gold deformed at room temperature, with grain sizes less than 25 nm. Bulk iron-copper nanostructures with grain sizes in the 100 nm size range exhibited perfectly plastic behavior and intense shear banding as the primary deformation mechanism. A variety of modeling techniques were conducted to determine the effects of grain size on strength, and to determine the constitutive behavior of nanostructured metals. Models of gradient plasticity and elasticity were also developed for traditional materials and thin films. (MM).

Book Fatigue and Fracture of Nanostructured Materials

Download or read book Fatigue and Fracture of Nanostructured Materials written by Pasquale Cavaliere and published by Springer Nature. This book was released on 2020-10-27 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Mechanical Behaviour of Nanostructured Materials

Download or read book Mechanical Behaviour of Nanostructured Materials written by D. G. Morris and published by Trans Tech Publications. This book was released on 1998 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides accounts of the processing and structure of nanostructured materials, with emphasis on bulk materials; the underlying principles of relevant deformation mechanisms; and the typical mechanical properties and behaviors of these materials when examined under laboratory conditions or in simulated operating environments. Points out areas where scientific understanding has advanced most, as well as areas for further research. Contains chapters on methods of preparation and typical microstructures, theoretical considerations and modeling, and experimental studies of mechanical behavior. Annotation copyrighted by Book News, Inc., Portland, OR

Book Investigations and Applications of Severe Plastic Deformation

Download or read book Investigations and Applications of Severe Plastic Deformation written by Terry C. Lowe and published by Springer Science & Business Media. This book was released on 2000-04-30 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Moscow, Russia, 2-7 August, 1999

Book Plastic Deformation in Nanocrystalline Materials

Download or read book Plastic Deformation in Nanocrystalline Materials written by Mikhail Gutkin and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: It seems there is no special need to comment on the term 'nanostructure' now, when one often meets the 'nano' words not only in scientific journals but even in newspapers. Moreover, today they are even to be heard in TV and radio programmes. In academic science, where the terms 'nanostructure' and 'nan otechnology' have been extremely popular since the early 1990s, they have been successfully extended to the sphere of economics and business, and now to politics. This is quite natural because nanostructures and nanotechnolo gies will surely serve as a basis for the most advanced and highest technology production in the nearest and probably also the remote future. Hence, the struggle to create and occupy its markets is already under way. In this respect, it is of great interest to review data on the dynamics of U. S. Federal Goverment expenditure for nanotechnology [1,2]. In the fiscal years 1997 and 2002, expenditure was approximately US$116 and US$ 697 million, respectively. In the fiscal year 2004, the President's request for US federal in vestment in nanoscale science, engineering and technology is about US$ 849 million [2]. The indicative budget allocated to the Thematic Priority enti tled 'Nanotechnologies and nanosciences, knowledge-based multifunctional materials and new production processes and devices' for the duration 2002- 2006 of the sixth EU Framework Programme for Research and Technological Development is EUR 1300 million [3].

Book Fracture of Nano and Engineering Materials and Structures

Download or read book Fracture of Nano and Engineering Materials and Structures written by E.E. Gdoutos and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 16th European Conference of Fracture (ECF16) was held in Greece, July, 2006. It focused on all aspects of structural integrity with the objective of improving the safety and performance of engineering structures, components, systems and their associated materials. Emphasis was given to the failure of nanostructured materials and nanostructures including micro- and nano-electromechanical systems (MEMS and NEMS).

Book Strength  Deformation and Fracture in Metallic Nanostructures

Download or read book Strength Deformation and Fracture in Metallic Nanostructures written by Xun Wendy Gu and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fracture Nanomechanics

    Book Details:
  • Author : Takayuki Kitamura
  • Publisher : CRC Press
  • Release : 2011-09-06
  • ISBN : 9814241830
  • Pages : 306 pages

Download or read book Fracture Nanomechanics written by Takayuki Kitamura and published by CRC Press. This book was released on 2011-09-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small structures of the micro/nanometer scale, such as electronic/optic devices and MEMS/NEMS have been developed, and the size of their elements now approaches the nano/atomic scale. This book discuses the fracture behavior of nano/atomic elements (nanofilms, nanowires, and so on) and focuses on the initiation and propagation of interface crack and mechanical instability criterion of atomic structures. This covers the fundamentals and the applicability of the top-down (conventional fracture mechanics to nanoscale) and bottom-up (atomic mechanics including ab initio simulation) concepts. New areas, such as multiphysics characteristics of nanoelements, are introduced as well.