Download or read book Stress corrosion Cracking in the Aluminum magnesium Alloy 5083 written by Timothy James Langan and published by . This book was released on 1990 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternate Immersion Stress Corrosion Testing of 5083 Aluminum written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The stress corrosion susceptibility of Type 5083 aluminum--magnesium alloy in plate form and press-formed shapes was determined in the short transverse direction. C-ring type specimens were exposed to alternate immersion in a sodium chloride solution. The test equipment and procedure, with several innovative features, are described in detail. Statistical test results are listed for seven thermomechanical conditions. A certain processing scheme was shown to yield a work-strengthened part that is not sensitized with respect to stress corrosion cracking.

Download or read book Stress corrosion Cracking of Aluminum Alloys written by J. D. Jackson and published by . This book was released on 1965 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Rapid Stress Corrosion Test for Aluminum Magnesium Alloys written by H. L. Craig and published by . This book was released on 1967 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The susceptibility of aluminum-magnesium alloys to stress corrosion cracking may be determined using a rapid, electrolytic test method. The stressed specimen, deflected as a beam, is made the anode in a 3.5 per cent salt solution by impressing a current of 40 ma/in. Prior to testing, a set of specimens may be heated, each one for an increased period of time over the previous one, to develop susceptibility in a part of the set of specimens. Test conditions have been chosen to maximize chances of failing materials with low degrees of susceptibility, while still not failing materials known to be nonsusceptible. Results with two commercially produced alloys are presented. Alloy 5083 shows less tendency to develop susceptibility than alloy 5456. The effect of cold work in accelerating the sensitivity to stress corrosion cracking is also shown.

Download or read book Stress corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys written by Benjamin Floyd Brown and published by . This book was released on 1972 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion Resistance of Aluminum and Magnesium Alloys written by Edward Ghali and published by John Wiley & Sons. This book was released on 2010-05-05 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Valuable information on corrosion fundamentals and applications of aluminum and magnesium Aluminum and magnesium alloys are receiving increased attention due to their light weight, abundance, and resistance to corrosion. In particular, when used in automobile manufacturing, these alloys promise reduced car weights, lower fuel consumption, and resulting environmental benefits. Meeting the need for a single source on this subject, Corrosion Resistance of Aluminum and Magnesium Alloys gives scientists, engineers, and students a one-stop reference for understanding both the corrosion fundamentals and applications relevant to these important light metals. Written by a world leader in the field, the text considers corrosion phenomena for the two metals in a systematic and parallel fashion. The coverage includes: The essentials of corrosion for aqueous, high temperature corrosion, and active-passive behavior of aluminum and magnesium alloys The performance and corrosion forms of aluminum alloys The performance and corrosion forms of magnesium alloys Corrosion prevention methods such as coatings for aluminum and magnesium Electrochemical methods of corrosion investigation and their application to aluminum and magnesium alloys Offering case studies and detailed references, Corrosion Resistance of Aluminum and Magnesium Alloys provides an essential, up-to-date resource for graduate-level study, as well as a working reference for professionals using aluminum, magnesium, and their alloys.

Download or read book The Delayed Fracture of Aluminum Alloys End of Year Report written by Joseph R. Pickens and published by . This book was released on 1982 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanisms of failure of high-strength aluminum alloys in saline environments was investigated. It was found that the mechanism of stress corrosion cracking (SCC) in a commercial Al-Mg alloy, 5083, is dominated by hydrogen embrittlement (HE). The dominant contribution of HE was discerned by comparing SCC susceptibility under Modes I and III loading. The influence of the surface oxide film on the SCC susceptibility of 7075 and 7175 alloys was also examined. It was found that unlike certain high purity alloys, the susceptibility of these commercial alloys is not significantly influenced by the composition of the oxide. In these 7xxx alloys, the insoluble constituent particles provide sites for SCC initiation. The greater susceptibility of 7075, compared with its higher purity version, 7175, is in part a result of its lower value fraction of the constituent particles. (Author).

Download or read book Environmental and Metallurgical Factors of Stress corrosion Cracking in High strength Steels written by C. J. Slunder and published by . This book was released on 1961 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Aluminium Metallurgy written by Roger Lumley and published by Woodhead Publishing. This book was released on 2018-05-22 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Aluminium Metallurgy: Recent Advances updates the very successful book Fundamentals of Aluminium Metallurgy. As the technologies related to casting and forming of aluminum components are rapidly improving, with new technologies generating alternative manufacturing methods that improve competitiveness, this book is a timely resource. Sections provide an overview of recent research breakthroughs, methods and techniques of advanced manufacture, including additive manufacturing and 3D printing, a comprehensive discussion of the status of metalcasting technologies, including sand casting, permanent mold casting, pressure diecastings and investment casting, and recent information on advanced wrought alloy development, including automotive bodysheet materials, amorphous glassy materials, and more. Target readership for the book includes PhD students and academics, the casting industry, and those interested in new industrial opportunities and advanced products. Includes detailed and specific information on the processing of aluminum alloys, including additive manufacturing and advanced casting techniques Written for a broad ranging readership, from academics, to those in the industry who need to know about the latest techniques for working with aluminum Comprehensive, up-to-date coverage, with the most recent advances in the industry

Download or read book Stress corrosion Cracking of Aluminum Alloys written by F. R. Mertens and published by . This book was released on 1967 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress corrosion Cracking of Metals written by Vsevolod Vladimirovich Romanov and published by . This book was released on 1961 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Light Metals 2014 written by John Grandfield and published by Springer. This book was released on 2016-12-23 with total page 1351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Light Metals symposia are a key part of the TMS Annual Meeting & Exhibition, presenting the most recent developments, discoveries, and practices in primary aluminum science and technology. Publishing the proceedings from these important symposia, the Light Metals volume has become the definitive reference in the field of aluminum production and related light metal technologies. The 2014 collection includes papers from the following symposia: •Alumina and Bauxite •Aluminum Alloys: Fabrication, Characterization and Applications •Aluminum Processing •Aluminum Reduction Technology •Cast Shop for Aluminum Production •Electrode Technology for Aluminum Production •Light-metal Matrix (Nano)-composites

Download or read book Thermomechanical Processing of 5083 Aluminum to Increase Strength Without Increasing Susceptibility to Stress Corrosion Cracking written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inhibition of Corrosion and Stress Corrosion Cracking of Sensitized AA5083 written by Jinwook Seong and published by . This book was released on 2015 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: 5XXX series Al-Mg alloys have been used for marine applications due to their low density, good formability, weldability, and, most notably, resistance to corrosion. However, they can be susceptible to intergranular corrosion (IGC) attack and intergranular stress corrosion cracking (IGSCC). This is due to a highly anodic ß phase (Mg2Al3) relative to the matrix that forms along the grain boundary and decreases corrosion resistance of 5XXX aluminum alloys. The purpose of this study is to develop the proper method to test corrosion inhibition on Al-Mg alloys and investigate the efficiency of inhibitors on sensitized alloys to prevent IGC and IGSCC. During the study of the electrochemical behavior of sensitized AA5083, another issue arose. It became clear that an altered surface layer (ASL) with a recrystallized microstructure having no ß phase at the grain boundaries forms on sensitized AA5083 during polishing, which prevents the exposure of subsurface ß phase on an as-polished surface. Selective dissolution of ß phase occurred when it was exposed on the surface as the result of either etching in alkaline solution or cathodic polarization, which caused an increase in the local pH near intermetallic particles. The different corrosion behavior of solutionized and sensitized AA5083 was examined by testing etched samples. Therefore, removal of the ASL is necessary to understand the influence of inhibitors on sensitized AA5083.

Download or read book Hydrogen induced Intergranular Fracture of Aluminum Magnesium Alloys written by Édouard Pouillier and published by . This book was released on 2011 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminium alloys that are strengthened by alloying elements in solid solution may present a particular sensitivity to intergranular stress corrosion cracking as a result of intergranular dissolution. In Al-5Mg alloys such as AA5083, precipitation of the [beta]-phase (Al3Mg2) at grain boundaries strongly favours intergranular fracture. Previous experimental studies revealed that local plasticity seems to play a significant role in crack initiation. Nevertheless, the exact role of crystal plasticity in the vicinity of grain boundaries is not well understood. The main goal of this doctoral thesis is two-fold: (i) to study the role of the local stress and strain fields on the mechanism of intergranular stress corrosion cracking and, based on such understanding, (ii) to develop a micro-mechanics based model to predict the onset of grain boundary cracking, through a suitably defined failure criterion, and the subsequent intergranular crack propagation. An experimental procedure based on in-situ tensile tests within the chamber of an scanning electron microscope was developed to measure the evolution of local strain fields at various microstructural scales and of lattice orientation using digital image correlation and electron backscatter diffraction (EBSD) techniques, respectively. Digital image correlation techniques were used in particular over areas comprising just a few grains up to mesoscopic regions of the polycrystal to quantify the deformation and strain fields required in the multi-scale study of intergranular fracture. From these observations, it was established that interfaces between two grains which have undergone little amount of deformation but lying within a neighbourhood of significantly deformed grains are the first to develop micro-cracks. In addition, X-Ray tomography and serial EBSD sectioning analyses revealed that cracked grain boundaries were perpendicular to the applied tensile load, where maximum tensile tractions are expected. To determine the role of local stresses and local plasticity on the mechanisms of intergranular fracture, a dislocation mechanics based crystal plasticity model was employed to describe the constitutive behaviour of each grain in the finite element model of the in-situ experiments. The model parameters were calibrated as a function of the solid solution magnesium content in the aluminium alloy. Measured EBSD maps were relied upon to define the orientation of the discrete grain regions of the in-situ specimens in the corresponding multi-scale finite element (FE) models. From the FE results, a range of threshold values of the normal grain boundary tractions needed to initiate intergranular cracks was identified. This finding is in close agreement with the predictions from an analytical solution of a simplified model of intergranular cracking based on an extension of Eshelby's theory for inclusions. Finally, a cohesive zone model calibrated with the critical grain boundary tractions and typical surface energies was added to the FE model of the polycrystal. A comparison between the experimental and numerical results reveals a good agreement with the observed experimental cracking pattern.

Download or read book Weldability of High strength Aluminum Alloys written by Robert Melvin Evans and published by . This book was released on 1966 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memorandum describes the fusion-welding characteristics, mechanical properties, and stress-corrosion behavior of high-strength, weldable aluminum alloys. These are defined as alloys in which sound welds can be produced and in which at least 50 and 70 percent of the maximum base-metal strength can be retained in the as-welded and post-weld-treated conditions, respectively. Careful selection of joining method and filler metals as well as close control of joining-process parameters is necessary to produce high-strength aluminum weldments. Highest strengths and weld-joint efficiencies in high-strength weldable alloys are achieved with the use of postweld aging and/or mechanical treatments. The best combination of highest strengths and good welding characteristics is found in the 2000 and 7000 alloy series. As compared with the 2000 and 5000 alloy series, the 7000 alloy as a class suffer three major property disadvantages: (1) their tendency to be notch sensitive, (2) their tendency to exhibit low toughness at low temperatures, and (3) their much greater susceptibility to stress-corrosion cracking. Nonetheless, several relatively new 7000 series alloys have been developed which show reasonably good notch toughness to -423 F and which are considered competitive with the 2219 and 2014 alloys for cryogenic applications. (Author).