Download or read book Develop Ultrafine Grain Size Titanum with Improved Mechanical Properties written by Roger C. May and published by . This book was released on 1974 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tear, notched tensile, and fatigue crack propagation tests were used to assess the resistance of titanium material to toughness reduction in methanol-chloride and aqueous-chloride environments. Material variables included grain size, texture, cold work, interstitial content, and substitutional alloying. Unalloyed material, recrystallized to an ultrafine grain size, showed better resistance to degradation by the environments than Ti-5Al-2.5Sn and Ti-6Al-4V alloys. A scanning electron microscopy study of the fracture surfaces of tear specimens revealed the presence of mechanical texturing. Experiments directed toward the production of ultrafine grain size titanium by reactive hot pressing of titanium hydride powder were conducted. (Author).

Download or read book Katalog ver konstutst llningen i Sundsvall nov 1913 written by and published by . This book was released on 1913 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Develop Ultrafine Grain Size Titanium with Improved Mechanical Properties written by Roger C. May and published by . This book was released on 1973 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modified Kahn-type tear tests and fatigue crack propagation tests were conducted to evaluate the effect of strengthening by grain refinement and/or cold deformation on the toughness of alpha titanium. In addition to grain size and cold work, the effects of interstitial content, texture, and substitutional alloying were evaluated. For unalloyed materials, the tear strength and the fatigue crack propagation rates were generally improved with increasing yield strength, independently of the chemical and structural conditions. Ti-6Al-4V and Ti-5Al-2.5Sn alloys showed reduced tear strengths. Measurement of the unit propagation energy during tear testing was found to be very sensitive to differences in chemistry and structure. (Modified author abstract).

Download or read book Investigations to Develop Metal Alloys with Ultrafine Grain Size Titanium with Improved Mechanical Properties written by R. L. Jones and published by . This book was released on 1970 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments are described which were intended to elucidate the extent to which commercial purity titanium wire and sheet could be strengthened by the combined effects of interstitial content, grain size refinement and post recrystallization cold reduction. Procedures were developed which resulted in recrystallized grain sizes of the order of 0.5 microns. Two features found to be essential were cold reduction of at least 90% before recrystallization and the use of a rapid heat transfer technique (in this case molten lead annealing) for the recrystallization heat treatment. Grain refinement to this extent was found to lead to increases in strength (of up to 60 Ksi) and reduction in area at failure, accompanied by decreases (of up to a factor of two) in uniform elongation. The use of PRR was found to result in an additional strength increase (20-40 Ksi) and an additional uniform elongation decrease (a further factor of 2) with little effect on the reduction in area at failure. A program goal of a yield strength of 150 Ksi combined with adequate ductility was exceeded in the wire experiments but was not attained in the sheet experiments where difficulties were encountered in the achievement of the necessary initial 90% cold reduction. (Author).

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-04 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992-11 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Engineering in Biomedical Application written by Jay Prakash Srivastava and published by John Wiley & Sons. This book was released on 2024-01-31 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: MECHANICAL ENGINEERING IN BIOMEDICAL APPLICATIONS The book explores the latest research and developments related to the interdisciplinary field of biomedical and mechanical engineering offering insights and perspectives on the research, key technologies, and mechanical engineering techniques used in biomedical applications. The book is divided into several sections that cover different aspects of mechanical engineering in biomedical research. The first section focuses on the role of additive manufacturing technologies, rehabilitation in healthcare applications, and artificial recreation of human organs. The section also covers the advances, risks, and challenges of bio 3D printing. The second section presents insight into biomaterials, including their properties, applications, and fabrication techniques. The section also covers the use of powder metallurgy methodology and techniques of biopolymer and bio-ceramic coatings on prosthetic implants. The third section covers biofluid mechanics, including the mechanics of fluid flow within our body, the mechanical aspects of human synovial fluids, and the design of medical devices for fluid flow applications. The section also covers the use of computational modeling to study the blockage of carotid arteries. The final section elaborates on soft robotic manipulation for use in medical sciences. Audience The book provides practical insights and applications for mechanical engineers, biomedical engineers, medical professionals, and researchers working on the design and development of biomedical devices and implants.

Download or read book Ti Based Biomaterials written by Jarosław Jakubowicz and published by MDPI. This book was released on 2020-06-17 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, great attention has been paid to materials that can be used in the human body to prepare parts that replace failed bone structures. Of all materials, Ti-based materials are the most desirable, because they provide an optimum combination of mechanical, chemical, and biological properties. The successful application of Ti biomaterials has been confirmed mainly in dentistry, orthopedics, and traumatology. Titanium biocompatibility is practically the highest of all metallic biomaterials; however, new solutions are being sought to continuously improve their biocompatibility and osseointegration. Thus, the chemical modification of Ti results in the formation of new alloys or composites, which provide new perspectives for Ti biomaterials applications. This book covers broad aspects of Ti-based biomaterials concerning the design of their structure, mechanical, and biological properties. This book demonstrates that the new Ti-based compounds and their surface treatment provide the best properties for biomedical applications.

Download or read book Recrystallization and Related Annealing Phenomena written by F.J. Humphreys and published by Elsevier. This book was released on 2012-12-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The annealing of deformed materials is of both technological importance and scientific interest. The phenomena have been most widely studied in metals, although they occur in all crystalline materials such as the natural deformation of rocks and the processing of technical ceramics. Research is mainly driven by the requirements of industry, and where appropriate, the book discusses the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes. The subjects treated in this book are all active research areas, and form a major part of at least four regular international conference series. However, there have only been two monographs published in recent times on the subject of recrystallization, the latest nearly 20 years ago. Since that time, considerable advances have been made, both in our understanding of the subject and in the techniques available to the researcher. The book covers recovery, recrystallization and grain growth in depth including specific chapters on ordered materials, two-phase alloys, annealing textures and annealing during and after hot working. Also contained are treatments of the deformed state and the structure and mobility of grain boundaries, technologically important examples and a chapter on computer simulation and modelling. The book provides a scientific treatment of the subject for researchers or students in Materials Science, Metallurgy and related disciplines, who require a more detailed coverage than is found in textbooks on physical metallurgy, and a more coherent treatment than will be found in the many conference proceedings and review articles.

Download or read book Government Reports Index written by and published by . This book was released on 1975 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1974-11 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

Download or read book Mechanical Alloying of Ferrous and Non Ferrous Alloys written by Shashanka Rajendrachari and published by Elsevier. This book was released on 2024-06-19 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth exploration of ferrous and non-ferrous alloys including various methods of preparation and production, their mechanical properties, and applications. The advantages of the mechanical alloying processing approach over other traditional powder metallurgical techniques is explained as are which alloys are best suited for this technique. Preparation steps, microstructures, properties, and applications for ferrous and non-ferrous alloys are compared, with insight on which alloys are best suited for preparation by alloying. The advantages and disadvantages of wet and dry milling are outlined. Processing, properties, and applications of high entropy alloys, ODS stainless steel, shape memory alloys, cermets, iron, copper, zinc, tungsten, aluminum, titanium, magnesium, and ceramic-based alloys are also covered, as are different powder preparation techniques and sintering methods. Outlines the different types of mechanical alloying used to prepare powders, their mechanisms, factors affecting the process, and more Covers the manufacturing, characteristics, and applications of high entropy alloys, ODS stainless steel, shape memory alloys, magnesium, ceramic-based alloys, and more Compares preparation of ferrous and non-ferrous alloys, their microstructures, and properties Discusses the advantages and disadvantages of wet and dry milling

Download or read book Nanocrystalline Titanium written by Halina Garbacz and published by Elsevier. This book was released on 2018-09-17 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocrystalline Titanium discusses the features of nanocrystalline titanium production by various SPD methods, also comparing their microstructure and properties. The authors characterize the physical, chemical and mechanical properties of ultrafine grained titanium, indicating which are crucial for their application. Titanium alloys are characterized by high specific strength combined with excellent corrosion resistance, whereas the mechanical properties of pure (or commercial purity - CP) titanium are much lower. SPD methods are proving to be an effective way to increase strength, even to a level typical for structural titanium alloys. This book is useful for academics and professionals studying the behavior of metallic materials. Discusses various SPD techniques and their applications for titanium Previews the limitations of SPD methods for titanium, along with the problems that can be encountered during production Characterizes the physical, chemical and mechanical properties of ultrafine grained titanium and indicates which are crucial for its production applications

Download or read book Design and Fabrication of Equal Channel Angular Extrusion Process Analysis for Non Ferrous Materials written by Perumalla Janaki Ramulu and published by Anchor Academic Publishing. This book was released on 2017 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Equal Channel Angular Extrusion” (ECAE) is a significant method in industrial forming applications, which is the most important method for the production of ultrafine grained bulk samples, where plastic strains are introduced into the bulk material without any changes in the cross section. ECAE has different die channel angles from which an optimum die channel angle should be identified so that efficient mechanical properties will be obtained. This study is focused on the plastic deformation behavior of Al alloys by modeling ECAE with experimental and finite element software. A solid model was generated using CATIA. The STL files of ECAE die generated in CATIA were used in DEFORM-3D for simulations. The experiments are performed by designing the ECAE tools such as die, punch and billet. A series of numerical experiments were carried out for the die angles of 115°, 125°and 135° and outer corner angle of 6°, using a billet diameter of 9mm and a height of 70mm. A detailed analysis of the strains introduced by ECAP (“Equal Channel Angular Pressing”) in a single passage through the die is noted. The experiments are conducted by attaching the ECAE tools to the Universal Testing Machine on aluminum alloy. The dimensions are followed for ECAE by taking considerations from the existing literature into account. On the basis of the experiment and simulation results, load, displacement, and punch force are evaluated and compared with each other.

Download or read book Bulk Nanostructured Materials with Multifunctional Properties written by I. Sabirov and published by Springer. This book was released on 2015-09-01 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a multifunctional approach to the design of bulk nanostructured metals through severe plastic deformation (SPD). Materials engineering has traditionally involved selecting a suitable material for a given application. However, modern engineering frequently requires materials with a set of multifunctional, often conflicting properties: Enhanced mechanical properties need to be combined with improved physical (electrical, magnetic, etc.) and/or chemical (corrosion resistance, biocompatibility) properties. So disparate materials properties need to be engineered and optimized simultaneously. These requirements have created a paradigm shift in which the classical materials selection approach is replaced by design of material microstructures to achieve certain performance requirements, subject to constraints on individual properties such as strength, conductivity, and corrosion resistance. Written by researchers at the forefront of this new materials design approach, the present volume provides a comprehensive introduction to multifunctional design of bulk nanostructured materials, with applications ranging from hydrogen storage to construction engineering.