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The Development Of Aluminum 6 Per Cent Magnesium Wrought Alloys For Elevated Temperature Service And Their Resistance To Corrosion In Water At Temperatures Up To 6000f
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Book Synopsis The Development of Aluminum-6 Per Cent Magnesium Wrought Alloys for Elevated-temperature Service and Their Resistance to Corrosion in Water at Temperatures Up to 6000F by : K. Grube
Download or read book The Development of Aluminum-6 Per Cent Magnesium Wrought Alloys for Elevated-temperature Service and Their Resistance to Corrosion in Water at Temperatures Up to 6000F written by K. Grube and published by . This book was released on 1950 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the present time, 28 aluminum and 728 are used in applications in which river water attains temperatures as high as about 180 deg F. The 2S is aluminum of commercial purity, and the 72S is a high-purity aluminum-base alloy containing 1 per cent zinc. Both of these materials are relatively weak at room temperature as well as at elevated temperatures. The objective of the present work was the development of aluminum-base alloys which had higher load-carrying capacities at all temperatures up to 600 deg F. without an appreciable sacrifice in resistance to corrosion by water at elevated temperatures and also without an appreciable increase in thermal neutron cross-section value. Accordingly, the work was divided into two phases. The first dealt with the development of alloys having better load-carrying capacity, and the second was concerned with the effects of temperature on the corrosion resistance of the experimental and some commercial alloys in water. The first phase is described in Section I of the report, and the second in Section II of the report.
Book Synopsis The Development of Aluminum-6 Per Cent Magnesium Wrought Alloys for Elevated-temperature Service and Their Resistance to Corrosion in Water at Temperatures Up to 600°F by : K. Grube
Download or read book The Development of Aluminum-6 Per Cent Magnesium Wrought Alloys for Elevated-temperature Service and Their Resistance to Corrosion in Water at Temperatures Up to 600°F written by K. Grube and published by . This book was released on 1950 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the present time, 28 aluminum and 728 are used in applications in which river water attains temperatures as high as about 180 deg F. The 2S is aluminum of commercial purity, and the 72S is a high-purity aluminum-base alloy containing 1 per cent zinc. Both of these materials are relatively weak at room temperature as well as at elevated temperatures. The objective of the present work was the development of aluminum-base alloys which had higher load-carrying capacities at all temperatures up to 600 deg F. without an appreciable sacrifice in resistance to corrosion by water at elevated temperatures and also without an appreciable increase in thermal neutron cross-section value. Accordingly, the work was divided into two phases. The first dealt with the development of alloys having better load-carrying capacity, and the second was concerned with the effects of temperature on the corrosion resistance of the experimental and some commercial alloys in water. The first phase is described in Section I of the report, and the second in Section II of the report.
Book Synopsis The Development of Aluminum - 6 Percent Magnesium Wrought Alloys for Elevated-Temperature Service in Water at Temperatures Up to 600 Degree F. by :
Download or read book The Development of Aluminum - 6 Percent Magnesium Wrought Alloys for Elevated-Temperature Service in Water at Temperatures Up to 600 Degree F. written by and published by . This book was released on 1950 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the present time, 28 aluminum and 728 are used in applications in which river water attains temperatures as high as about 180 deg F. The 2S is aluminum of commercial purity, and the 72S is a high-purity aluminum-base alloy containing 1 per cent zinc. Both of these materials are relatively weak at room temperature as well as at elevated temperatures. The objective of the present work was the development of aluminum-base alloys which had higher load-carrying capacities at all temperatures up to 600 deg F. without an appreciable sacrifice in resistance to corrosion by water at elevated temperatures and also without an appreciable increase in thermal neutron cross-section value. Accordingly, the work was divided into two phases. The first dealt with the development of alloys having better load-carrying capacity, and the second was concerned with the effects of temperature on the corrosion resistance of the experimental and some commercial alloys in water. The first phase is described in Section I of the report, and the second in Section II of the report.
Book Synopsis Development of Magnesium-cerium Forged Alloys for Elevated-temperature Service by : K. Grube
Download or read book Development of Magnesium-cerium Forged Alloys for Elevated-temperature Service written by K. Grube and published by . This book was released on 1951 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results obtained during an investigation of magnesium-cerium forged alloys are described; the development of improved alloys and a study correlating alloy composition and structure with the resistance to creep are covered. As a result of this investigation, the optimum composition of a magnesium-cerium alloy possessing superior high-temperature tensile properties was determined.
Book Synopsis Development of Cast Aluminum Alloys for Elevated Temperature Service by : Webster Hodge
Download or read book Development of Cast Aluminum Alloys for Elevated Temperature Service written by Webster Hodge and published by . This book was released on 1948 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of an experimental study to develop an aluminum alloy for elevated-temperature service by determining the effect of heat treatment and exposure to elevated temperatures on the tensile properties of the various alloys subsequently cooled to room temperature, the effect of various alloy additions on the room- and elevated-temperature properties of aluminum, 6-percent-magnesium alloys, and the improvement in high-temperature creep properties of some of the optimum compostions. The composition of an experimental alloy that appears to tbe optimum and an approximate comparison of its properties with two commercial alloys are presented.
Book Synopsis Properties of Wrought and Cast Aluminum and Magnesium Alloys by : Bristol Aero-Engines
Download or read book Properties of Wrought and Cast Aluminum and Magnesium Alloys written by Bristol Aero-Engines and published by . This book was released on 1956 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Aluminum Cold Spray Coating on Corrosion Protection and Corrosion Fatigue Life Enhancement of Magnesium Alloy, AZ31B by : Mohammad Waheeb Diab
Download or read book The Effect of Aluminum Cold Spray Coating on Corrosion Protection and Corrosion Fatigue Life Enhancement of Magnesium Alloy, AZ31B written by Mohammad Waheeb Diab and published by . This book was released on 2015 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnesium alloys are of a recent interest for the transportation industry due to their excellent properties such as high strength and low density which will save energy and reduce gas emission and it will also improve the vehicle performance. However due to their high chemical activity, magnesium and magnesium alloys have unsatisfactory corrosion resistance and high tendency to corrode in humid and aqueous environments. Although alloying elements provides some improvement in magnesium against corrosion, further protection for these alloys is needed against the corrosion in different corrosive environments. Aluminum powder cold spray is a new coating technology with very promising results in corrosion protection of magnesium alloys. The effect of applying pure aluminum cold spray coating on wrought AZ31B Mg alloy from the corrosion and corrosion fatigue point of view is studied. This research comprises two parts. The first part is studying the corrosion behavior of AZ31B cold spray coated and uncoated coupons by performing an accelerated corrosion testing in a corrosion chamber. The results for both types of coupons have been compared to each other. The second part of this research is to study the fatigue strength by rotating bending machine of stress relieved and stress relieved/coated specimens in salt water environment. S-N curves for the two groups of specimens were plotted. After the analysis and comparison of all the testing results, it was revealed that pure Al cold spray coating considerably improved the corrosion resistance of Mg alloy AZ31B in 5% NaCl fog environment. The microstructural analysis revealed the presence of some secondary phases which act as a cathode and accelerate the corrosion of the anode, Mg alloy. Comparison of corrosion-fatigue S-N curves of stress relieved and stress relieved/coated specimens show fatigue life reduction after cold spray coating to a maximum percentage of 87.6%. The reason for that is the fact that the pure Al powder has much lower ultimate tensile strength than Mg alloy AZ31B. This fact will lead to an earlier crack on the Al coating surface during the fatigue cycles, from which the electrolyte will penetrate to the Mg substrate and cause a localize corrosion and failure.
Book Synopsis On the Development of Magnesium Alloys with Improved Corrosion Resistance by : Aaron Sudholz
Download or read book On the Development of Magnesium Alloys with Improved Corrosion Resistance written by Aaron Sudholz and published by . This book was released on 2010 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented herein represents a research endeavour undertaken by Aaron Südholz at Monash University for the degree of Doctor of Philosophy. The research program investigated the technological challenges of Mg alloys in regards to the inherent susceptibility of Mg metal to corrosion, examined in context of the improvement of the corrosion resistance of Mg. A broad range of atypical alloying additions were initially considered in conjunction with the commercial AZ91 alloy. Additions were found to influence the formation of the incumbent [beta]-phase intermetallic when added in small concentrations and lead to the introduction of an additional intermetallic phase when added in excess of the respective solubility limit. This work aided the identification of elements which could be beneficial to the reduction of corrosion kinetics in AZ91 alloys. The investigation proceeded to model Mg alloys to identify individual effects of elements commonly applied in commercial Mg alloys such as; Al, Zn, Ce, La, Nd and Y. It was found that each of these elements enters the solid solution matrix below their respective solubility limit and each element forms an intermetallic phase rich in the alloying element when in excess of the solubility limit for that element. The respective intermetallic phases were found to be more noble than the parent Mg alloy, in all cases support enhanced levels of cathodic kinetics and supported reduced rates of dissolution than [alpha]-Mg when anodically polarised. This work concluded with the integration of the AZ91 Mg-based alloy with small amounts of rare earth elements in order to exploit the beneficial properties of RE elements in the solid solution of the [alpha]-matrix and its subsequent influence on the formation of the Mg17Al12 [beta]-phase. As a result, this work prompts discussion of strategies in regards to improving the corrosion resistance of Mg alloys and these strategies are demonstrated in a number of new cast Mg alloys designed by the author. This work also presents and tests hypotheses which are generally applicable to Mg alloys with respect to corrosion. The information contained in this thesis is intended to fill the current knowledge gap of the corrosion behaviour of Mg alloys with previously unreported findings and introduce, through the analysis of these findings, strategies for improving the corrosion resistance of Mg alloys for future applications.
Book Synopsis The Effect of Cold Spray Coating on Fatigue Life of Magnesium Alloy, AZ31B. by : Hassan Mahmoudi-Asl
Download or read book The Effect of Cold Spray Coating on Fatigue Life of Magnesium Alloy, AZ31B. written by Hassan Mahmoudi-Asl and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Beta Phase Growth and Precipitation in the 5xxx Series Aluminum Alloy System by : Daniel Scotto D'Antuono
Download or read book Beta Phase Growth and Precipitation in the 5xxx Series Aluminum Alloy System written by Daniel Scotto D'Antuono and published by . This book was released on 2017 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5xxx series aluminum alloys are commonly used for structural applications due to their high strength to weight ratio, corrosion resistance, and weldability. This material system is a non-heat treatable aluminum and derives its strength from a super saturation of magnesium (3%>), and from cold rolling. While these materials have many admiral properties, they can undergo a process known as sensitization when exposed to elevated temperatures (50-280℗ʻC) for extended periods of time. During this process, magnesium segregates toward the grain boundaries and forms the secondary precipitate Îø phase (Al3Mg2). When exposed to harsh environments such as sea water, a galvanic couple is formed between the Al matrix and the Îø phase precipitates. The precipitates become anodic to the matrix and preferentially dissolve leaving gaps along the boundary network, ultimately leading to stress corrosion cracking. While this problem has been known to occur for some time now, questions relating to nucleation sites, misorientation dependence, effect of prior strain, and preferred temperature regimes remain unanswered. The work contained in this thesis attempted to better understand the kinetics, growth, and misorientation dependence, of Îø phase precipitation using in situ transmission electron microscopy experiments which allowed for direct visualization of the precipitation process. Orientation imaging using a Nanomegas/ASTAR system (OIM in TEM) coupled with the in situ experiments, along with elemental STEM EELs mapping were used to better understand the diffusion of Mg and found low angle boundaries as potential sites for nucleation. The resulting STEM EELs experiments also showed that Mg is much more stable at the grain boundaries than previously thought. Concurrent bulk ex-situ studies were used to compare various heat treatments, as well as to failed in service material showing that the low temperature treatments yield the metastable Îø' phase more readily than the Îø equilibrium phase. The work here has identified the size, location, and kinetics of Îø phase formation as well as the effects of pre-strain (cold rolling) and boundary misorientation on precipitation showing that increases in dislocations speeds up sensitization and increases nucleation sites but does not increase overall precipitate size. This work also compared precipitate type (Îø vs. Îø') showing that the metastable Îø' phase is more common in low temperature treated material and the main precipitate found in failed in service material. A comparison between the corrosion effects of the two precipitation showed that lower temperature treatments have a higher degree of sensitization further delineating between the two forms.
Book Synopsis Airframe & Powerplant Mechanics by :
Download or read book Airframe & Powerplant Mechanics written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Engineering for Design of Liquid-Propellant Rocket Engines by : Dieter K. Huzel
Download or read book Modern Engineering for Design of Liquid-Propellant Rocket Engines written by Dieter K. Huzel and published by AIAA. This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rules of Thumb for Mechanical Engineers by : J. Edward Pope
Download or read book Rules of Thumb for Mechanical Engineers written by J. Edward Pope and published by Gulf Professional Publishing. This book was released on 1997 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluids -- Heat transfer -- Thermodynamics -- Mechanical seals -- Pumps and compressors -- Drivers -- Gears -- Bearings -- Piping and pressure vessels -- Tribology -- Vibration -- Materials -- Stress and strain -- Fatigue -- Instrumentation -- Engineering economics.
Book Synopsis Corrosion of Aluminium by : Christian Vargel
Download or read book Corrosion of Aluminium written by Christian Vargel and published by Elsevier. This book was released on 2004-10-02 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion of Aluminium highlights the practical and general aspects of the corrosion of aluminium alloys with many illustrations and references. In addition to that, the first chapter allows the reader who is not very familiar with aluminium to understand the metallurgical, chemical and physical features of the aluminium alloys. The author Christian Vargel, has adopted a practitioner approach, based on the expertise and experience gained from a 40 year career in aluminium corrosion This approach is most suitable for assessing the corrosion resistance of aluminium- an assessment which is one of the main conditions for the development of many uses of aluminium in transport, construction, power transmission etc. 600 bibliographic references provide a comprehensive guide to over 100 years of related study Providing practical applications to the reader across many industries Accessible to both the beginner and the expert
Book Synopsis Atlas of Stress-corrosion and Corrosion Fatigue Curves by : A. J. McEvily
Download or read book Atlas of Stress-corrosion and Corrosion Fatigue Curves written by A. J. McEvily and published by ASM International(OH). This book was released on 1990 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reference for materials scientists that can be used to find the effects of various corrosive media and processing variables on the stress-corrosion cracking and corrosion fatigue characteristics of ferrous and nonferrous alloys. There are more than 500 stress/cracking-time curves, S/N curves, and
Book Synopsis Airframe and Powerplant Mechanics General Handbook by : Faa
Download or read book Airframe and Powerplant Mechanics General Handbook written by Faa and published by Nicholson. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Aviation Maintenance Technician Handbook-General was developed as one of a series of three handbooks for persons preparing for mechanic certification with airframe or powerplant ratings, or both. It is intended that this handbook will provide basic information on principles, fundamentals, and technical procedures in the subject matter common to both the airframe and powerplant ratings. Emphasis in this volume is on theory and methods of application."--Preface of book.
Book Synopsis Nanostructure Control of Materials by : R H J Hannink
Download or read book Nanostructure Control of Materials written by R H J Hannink and published by Taylor & Francis US. This book was released on 2006-02-28 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Nanotechnology is an area of science and technology where dimensions and tolerances in the range of 0.1 nm to 100nm play a critical role. Nanotechnology has opened up new worlds of opportunity. It encompasses precision engineering as well as electronics, electromechanical systems and mainstream biomedical applications in areas as diverse as gene therapy, drug delivery and novel drug discovery techniques. Nanostructured materials present exciting opportunities for manipulating structure and properties on the nanometer scale. The ability to engineer novel structures at the molecular level has led to unprecedented opportunities for materials design. This new book provides detailed insights into the synthesis/structure and property relationships of nanostructured materials. A valuable book for materials scientists, mechanical and electronic engineers and medical researchers. CONTENTS Special properties resulting from nanodimensionality; Nanoparticle technologies; Control of molecular assemblies; Functional organic inorganic nanocomposites; Molecular modelling of nanomorphology in polymers; Nanodimensionality and ionic transport; Multi scale simulation of nanionic polymer systems; Nanoengineering in metallic systems; Characterisation of nanometallic systems with NMR; Mechanical behaviour of metallic nanolaminates; Mechanics of nanocomposite structures; Preparation, properties and performance of Nanocrystalline ceramics; Novel properties from nanoceramics; Hydrogen storage in nanostructured materials; Nanofabrication.
