Download or read book Investigation of the Mechanical Behavior of WE43 Magnesium Alloy Modified Via Multi Directional Forging written by Camila Rita De Souza and published by . This book was released on 2017 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical processing improves the mechanical behavior of modern materials, thus increasing their strength, toughness, and other physical properties. This research focuses on the mechanical properties of magnesium alloy WE43 under conditions of severe plastic deformation. The main objective of this research is to characterize structurally the magnesium alloy and analyze the formation of bulk ultrafine grains produced by two main techniques which promote the change in grain size and consequently the increase of the mechanical strength. Multi Directional Forging is a compression procedure applied to the material in all three directions, maintaining the dimensional ratio and increasing the strain produced until the cumulative strain be greater than 2.0. This was conducted at 550 °C. As magnesium alloy WE43 has good properties at higher temperatures; the cumulative plastic strain obtained was higher than 2.0. To complement the study of the strength increase via plastic deformation, Equal Channel Angular Processing was applied at three different temperatures. The required stress to push the material through the die at 550 °C was 867 MPa. The results show a moderate decrease in grain size from 18 μm to 14 [mu]m in ECAP and 12 [mu]m in Multi Directional Forging. This decrease in grain size results in an increase in the hardness. In view of the brittleness of the magnesium alloy it was not possible to increase the plastic strain as expected in Multi Directional Forging per pass; the samples fractured if the stress was increased beyond 230 MPa. The yield stress at 1.6 x 10-2 s-1 increased from 87 MPa for the initial condition, to 115 MPa for the specimens subjected to a strained. In dynamic compression test, experiments were conducted at a strain rate of 2.5x103 s-1 and the yield stress increased to 246 MPa. This shows that magnesium has a high strain-rate sensitivity.

Download or read book Study of the Microstructure Mechanical Properties and Corrosion Behavior of WE43 Magnesium Alloy Deposited Using Laser Power Directed Energy Deposition written by Leila Sorkhi and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent interest in the so called resonant cavity antenna comes from the necessity to develop a

Download or read book An Investigation of the Mechanical Properties of RS66 Magnesium Alloy written by Eran Weisel and published by . This book was released on 2011 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Magnesium Technology 2011 written by Wim H. Sillekens and published by John Wiley & Sons. This book was released on 2011-04-12 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Magnesium Technology Symposium, which takes place every year at the TMS Annual Meeting & Exhibition, is one of the largest yearly gatherings of magnesium specialists in the world. Papers are presented in all aspects of the field, ranging from primary production to applications to recycling. Moreover, papers explore everything from basic research findings to industrialization. Magnesium Technology 2011 covers a broad spectrum of current topics, including alloys and their properties; cast products and processing; wrought products and processing; forming, joining, and machining; corrosion and surface finishing; ecology; and structural applications. In addition, you'll find coverage of new and emerging applications in such areas as biomedicine and hydrogen storage.

Download or read book Characterization and Modeling of Forged ZK60 Mg Alloys Under Quasi static and Fatigue Loadings written by Seyyed Mohamad Hasan Karparvarfard and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to impending changes to the environmental regulations on the vehicles' gas consumption rate, the transportation sector is motivated toward the widespread adoption of lightweight materials in the manufacturing of its products. Magnesium (Mg) alloys, being the lightest commercial metals available in the industry, can play an integral role in this scope with offering huge mass saving comparing to aluminum and steel. With the development of multi-material vehicle architecture concept in the automotive industry philosophy, ultra-light materials such as Mg alloys should be exploited in the component in which they perform the best. For vehicle parts which are driven by fatigue, e.g., suspension control arm, wrought Mg is a suitable candidate as a substitute for the current structural metals, due to its excellent fatigue performance in addition to opening mass saving windows. Of the commercially available Mg alloys, ZK- series, and in particular, ZK60 Mg alloys, have shown superb mechanical properties and formability. Moreover, amongst several prevalent industrial manufacturing techniques, forging is of particular interest because it has shown its promise to produce components with complex geometry and high strength. However, the mechanical behavior of forged ZK60 has been largely unknown so far. The current research work has aimed to fill this gap by characterizing the mechanical behavior of forged ZK60. The focus has been to establish a link between the material, structure and performance. The discovery-level knowledge, established through this project, develops a better understanding of the fatigue performance of this alloy and provides a wealth of mechanical performance data on this material in order for industry to make better use of it in real-world applications. Initially, the effects of open-die forging on the mechanical behavior of cast ZK60 was studied. A partially recrystallized microstructure with sharp basal texture was developed in the material. Also, the porosity volume was dramatically reduced after the forging. As a result, the tensile yield strength and elongation were increased by 21% and 72%, respectively. Under cyclic loadings, the forged material exhibited a better response in both the low cycle fatigue (LCF) and high cycle fatigue (HCF) regimes in the light of its higher ductility and strength, and lower content of porosities and intermetallic particles, which can play as crack nucleation sites. The fracture surfaces of the samples tested at various strain amplitudes were analyzed using the scanning electron microscope (SEM), and different crack initiation mechanisms were identified. At low strain amplitudes, corresponding to the HCF regime, persistent slip bands (PSB) and second-phase intermetallic particles were defined as the major causes of crack initiation, whilst at high strain amplitudes, ascribed to the LCF lives, the interactions between twin-twin bands besides twin-dislocation were recognized as the key reasons for cracking. Next, the quasi-static and strain-controlled fatigue characteristics of ZK60 extrusion have been investigated along different directions, namely, the extrusion direction (ED), the radial direction (RD), and 45° with respect to the extrusion direction (45°), in the scope of process-structure-property-performance relationships. In contrast to the asymmetric quasi-static behavior of extrusion direction, radial and 45° directions manifested symmetric responses. Also, ED samples showed higher strength compared to the other two directions. The strain-controlled fatigue performance of ZK60 extrusion was insensitive to the material direction in the LCF regime. However, in the HCF regime, ED displayed fatigue responses superior to the RD and 45°. The texture measurement indicated a sharp basal texture along ED. Also, microstructural analyses revealed binary microstructure, explaining the ED's asymmetric behavior and higher strength comparing to the other directions. Higher tensile mean stress and less dissipated plastic energy per cycle for the ED samples, acting as two competing factors, were the principal reasons for ED's identical fatigue response to that of RD and 45 in the LCF regime. The fracture surface in the ED direction was dominated by twin lamellae and profuse twinned grains, whereas that in RD was dominated by slip bands. Lastly, Smith-Watson-Topper and Jahed-Varvani models were employed to predict the fatigue lives along all directions using a single set of material parameters. The energy-based model yielded acceptable predictions for ZK60 extrusion with anisotropic behavior. Finally, the multiaxial fatigue characteristics of as-extruded and close-die "I-beam" extruded-forged ZK60 were investigated. Quasi-static tension and shear tests in addition to uniaxial, pure shear, and multiaxial cyclic tests under variety of loading paths as well as texture measurements and microstructural analysis were delivered to characterize the material's behavior and understand the effects of forging on the performance of the alloy. It was discovered that the imparted thermo-mechanical process modified the initial sharp basal texture in the flanges of the I-beam. Secondly, following forging, the microstructures in the two flanges of the I-beams were similar. Furthermore, following the quasi-static tests, it was revealed that the axial behavior of the forging was superior to that of the starting extruded material, whereas the shear responses were comparable. Multiaxial fatigue tests demonstrated that non-proportionality does not change the fatigue life tremendously; however, it does affect the shear response remarkably. It was concluded that at low shear strain amplitudes that the shear strain is accommodated by slipping, the multiaxial behavior is somewhat dominated by the axial component. The microstructure of both undeformed and deformed samples after 20% shear strain under quasi-static loading was studied using the EBSD technique. The deformed sample showed considerable amount of {101 ̅2} tensile twins in the microstructure; hence, the developed texture plays an integral role in the material's shear behavior under large strains where appreciable extension twin occurs. Finally, an energy-based fatigue model was employed that effectively explains the different damage contributions by the axial and torsional loadings at different strain amplitudes, and accurately predicts the proportional and non-proportional multiaxial fatigue lives for both as-extruded and forged alloys.

Download or read book Fundamentals of Magnesium Alloy Metallurgy written by Mihriban O Pekguleryuz and published by Elsevier. This book was released on 2013-03-11 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnesium and magnesium alloys offer a wealth of valuable properties, making them of great interest for use across a wide range of fields. This has led to extensive research focused on understanding the properties of magnesium and how these can be controlled during processing. Fundamentals of magnesium alloy metallurgy presents an authoritative overview of all aspects of magnesium alloy metallurgy, including physical metallurgy, deformation, corrosion and applications.Beginning with an introduction to the primary production of magnesium, the book goes on to discuss physical metallurgy of magnesium and thermodynamic properties of magnesium alloys. Further chapters focus on understanding precipitation processes of magnesium alloys, alloying behaviour of magnesium, and alloy design. The formation, corrosion and surface finishing of magnesium and its alloys are reviewed, before Fundamentals of magnesium alloy metallurgy concludes by exploring applications across a range of fields. Aerospace, automotive and other structural applications of magnesium are considered, followed by magnesium-based metal matrix composites and the use of magnesium in medical applications.With its distinguished editors and international team of expert contributors, Fundamentals of magnesium alloy metallurgy is a comprehensive tool for all those involved in the production and application of magnesium and its alloys, including manufacturers, welders, heat-treatment and coating companies, engineers, metallurgists, researchers, designers and scientists working with these important materials. - Overviews all aspects of magnesium alloy metallurgy - Discusses physical metallurgy of magnesium and thermodynamic properties of magnesium alloys - Reviews the formation, corrosion and surface finishing of magnesium and its alloys

Download or read book Magnesium Technology 2014 written by Martyn Alderman and published by Springer. This book was released on 2016-12-06 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Magnesium Technology Symposium, the event on which this collection is based, is one of the largest yearly gatherings of magnesium specialists in the world. Papers in this collection represent all aspects of the field, ranging from primary production to applications to recycling. Moreover, papers explore everything from basic research findings to industrialization. This volume covers a broad spectrum of current topics, including alloys and their properties; cast products and processing; wrought products and processing; forming, joining, and machining; corrosion and surface finishing; ecology; and structural applications. In addition, there is coverage of new and emerging applications in such areas as hydrogen storage.

Download or read book Magnesium Magnesium Alloys and Magnesium Composites written by Manoj Gupta and published by John Wiley & Sons. This book was released on 2011-03-31 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: A look at the current and future uses of magnesium-based products and their role in the world's environmental and technological revolution The lightest of all structural metals, having one-fourth the density of steel and two-thirds that of aluminum, magnesium has already been adopted as an alternative construction material in applications as far ranging as automotive and sports equipment, electronics, and space technology. In a world concerned with minimizing the environmental impact of products, the choice of light-weight, energy-saving, and high-performance materials, like magnesium, would seem a small, significant step towards improving life on this planet. Magnesium, Magnesium Alloys, and Magnesium Composites introduces the science and current applications of this important metal, shedding light on the magnesium-based composites developed over the last fifteen years. Chapters include in-depth discussion of: The characteristics of pure magnesium—including atomic properties and crystal structure as well as physical, electrical, and mechanical properties Magnesium alloys—and the effects of the alloying elements, such as aluminum, lithium, copper, nickel, and silicon The properties of magnesium-based composites—and the effects of different types (metallic, ceramic, interconnected, and intermetallic) of reinforcements of varying length (from micron scale to nanometric length) Corrosion aspects of magnesium-based materials Magnesium-based products in medicine, sports equipment, and the automotive, aerospace, and electronics industries Bringing together, for the first time, the science, properties, and technologies relating to the current and future uses of magnesium, this important reference also offers readers a glimpse of a not-too-distant world in which environmental safety and sound engineering are a reality.

Download or read book Biological Materials Science written by Marc André Meyers and published by Cambridge University Press. This book was released on 2014-07-31 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: Takes a materials science approach, correlating structure-property relationships with function across a broad range of biological materials.

Download or read book Biodegradable Metals written by Hendra Hermawan and published by Springer Science & Business Media. This book was released on 2012-07-15 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book in the emerging research field of biomaterials covers biodegradable metals for biomedical applications. The book contains two main parts where each of them consists of three chapters. The first part introduces the readers to the field of metallic biomaterials, exposes the state of the art of biodegradable metals, and reveals its application for cardiovascular implants. Some fundamental aspects to give basic understanding on metals for further review on the degradable ones is covered in chapter one. The second chapter introduces the concept of biodegradable metals, it's state of the art and discuses a shifted paradigm from inert to bioactive, from corrosion resistant to corrodible metals. The third chapter focuses on the challenges and opportunities of using biodegradable metals for cardiovascular applications. The second part exposes an example of biodegradable metals from its concept to applications where a complete study on metallic biodegradable stent is detailed from materials design, development, testing till the implant fabrication. The forth chapter reveals new alloys development devoted for metallic biodegradable stent based on required criteria derrived from clinical needs and current nondegradable stents properties. Degradation of the alloys in simulated arterial conditions and its effect to cells are exposed in chapter five. The both chapters are concluded with a benchmarking of some more recent researches on materials development and testing for biodegradable stents. Chapter six reveals the tranformation process of the materials into stent prototypes where a standard process for making 316L stainless steel stents was followed. The book is completed by a perspective on the use of biodegradable metals for biomedical applications in the era of tissue engineering.

Download or read book Superplasticity in Advanced Materials ICSAM 2018 written by Goroh Itoh and published by Trans Tech Publications Ltd. This book was released on 2018-07-20 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes selected and peer reviewed papers presented at the 13th International Conference on Superplasticity in Advanced Materials (ICSAM 2018), August 19-22, 2018, St. Petersburg, Russia. We hope this collection will be interesting and useful for many specialists whose scientific and engineering activity is related to the area of superplastic materials, research of the mechanisms of superplasticity and superplastic processing technologies.

Download or read book Light Alloys written by Robert John Hussey and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light Alloys Directory and Databook is a world-wide directory of the properties and suppliers of light alloys used in, or proposed for, numerous engineering applications. Alloys covered will include aluminium alloys, magnesium alloys, titanium alloys, beryllium. For the metals considered each section will consist of: a short introduction; a table comparing basic data and a series of comparison sheets. The book will adopt standardised data in order to help the reader in finding and comparing different materials and identifying the required information. All comparison sheets are cross-referenced, so that the user will be able to locate data on a specific product or compare properties easily. The book is designed to complement the existing publications on high performance materials.

Download or read book Magnesium Alloys and Their Applications written by Barry L. Mordike and published by . This book was released on 1998 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Properties of Magnesium Alloys written by Charles Moosbrugger and published by ASM International. This book was released on 2017-11-01 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnesium and magnesium alloys provide unique properties for engineering applications. Magnesium alloys are popular as a structural material because of their combination of light weight and strength. They are desirable for portable tools, appliances, electronic devices, airplanes, space vehicles, and land transportation. This book is written for engineers, scientists, teachers, and students engaged in the design process of material selection and material elimination. While focused on mechanical properties for structural design, the physical properties that are germane to corrosion behavior and electrical applications are represented. Two-thirds of the book is devoted to datasheets for individual alloys which provide a handy quick reference to specific properties and performance. The remainder of the book addresses topics common to all magnesium alloys such as the alloy designation system and product forms. Casting alloys and wrought alloys are compared. The alloy performance at elevated temperature is presented, as are fatigue properties. Finally, a summary of the corrosion behavior of selected alloys is discussed along with how these corrosion mechanisms can be applied for beneficial results.

Download or read book Springer Handbook of Mechanical Engineering written by Karl-Heinrich Grote and published by Springer Nature. This book was released on 2020-12-09 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This resource covers all areas of interest for the practicing engineer as well as for the student at various levels and educational institutions. It features the work of authors from all over the world who have contributed their expertise and support the globally working engineer in finding a solution for today‘s mechanical engineering problems. Each subject is discussed in detail and supported by numerous figures and tables.

Download or read book ASM Specialty Handbook written by M. M. Avedesian and published by ASM International. This book was released on 1999-01-01 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ASM Handbook is the most comprehensive collection of engineering information on this important structural material published in the last sixty years. Prepared with the cooperation of the International Magnesium Association, it presents the current industrial practices and provides information and data about the properties and performance of magnesium alloys. Materials science and engineering are covered, including processing, properties, and commercial uses.

Download or read book Corrosion of Magnesium Alloys written by G L Song and published by Woodhead Publishing. This book was released on 2011-03-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.