Download or read book Micromechanics of Hydrogen Embrittlement of Aluminum Alloys written by Leonel Stermann and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen embrittlement of structural metallic alloys is an economic and safety concern in many traditional industries and, looking forward, to the energetic transition. However; this phenomenon is still not fully understood. Microstructure scale studies are crucial to elucidate the role of plasticity in the fracture process. The strategy consists in reducing the size of the experimental set up by using a micro tensile machine to observe crack propagation at sub-grain scale in an AlZnMg commercial alloy. Internal hydrogen embrittlement (IHE) and stress corrosion cracking (SCC) tests are performed on notched samples. Single crack propagation is followed by optical microscopy. Digital image correlation (DIC) is used to measure the surface displacement and strain field and determine the crack tip position with a resolution of one micron. Crack propagation velocities and applied stress intensity factor values are obtained. In both IHE and SCC, two different kinds of plastic deformation are observed accompanying the crack propagation. They are finely quantified by DIC. The first kind has the shape of two deformation bands, inclined with respect to the fracture plane, emitted from the crack tip. The second one is an intense deformation just ahead of the crack tip with only a few microns extension. Scanning Electron Microscope examinations of the fracture surface are used to find connections between fracture morphology, local crack speed, and local plasticity intensity at a microscopic scale.
Download or read book Hydrogen Embrittlement and Stress Corrosion Cracking written by Alexander Robert Troiano and published by ASM International. This book was released on 1984-01-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Hydrogen in the Stress Corrosion Cracking of High Strength Aluminum Alloys written by A. W. Thompson and published by . This book was released on 1981 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program has been to understand the stress corrosion cracking (SCC) behavior of high-strength aluminum alloys, and in particular to understand the role played by hydrogen embrittlement in such cracking. The approach taken was to study microstructural effects on both hydrogen embrittlement and SCC, and to establish, insofar as possible, microstructural and fractographic correlations with cracking behavior, and detailed understanding of the mechanical behavior of hydrogen-charged material. When this program began, there existed only a single unconfirmed report of hydrogen embrittlement in a high-strength aluminum alloy. That report was confirmed (on 7075-T651), and extensive additional evidence acquired (on 7075, 2124 and 7050, in a variety of heat treatments), permitting us to assemble a complete and detailed description of hydrogen embrittlement and its dependence on microstructure in Al alloys, in some 14 publications. A parallel effort on SCC behavior has also been conducted, using the technique of Mode I - Mode III testing to provide information on the relative contributions of hydrogen embrittlement and anodic dissolution to SCC. The Mode I data for 7075 showed a close parallel to the hydrogen charging results, in microconstructural dependence and in fractography. The Mode III data showed that the anodic dissolution component of SCC is small compared to hydrogen embrittlement, and moreover, has a much weaker dependence on microstructure. (Author).
Download or read book Macro Micro Studies in Hydrogen Embrittlement Mechanisms in Tatanium and Aluminium Alloys written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Embrittlement of Structural Alloys A Technology Survey written by and published by . This book was released on 1976 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Macro Micro Studies of Hydrogen Embrittlement Mechanisms in Titanium and Aluminium Alloys written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Micromechanics and Kinetics of Hydrogen Embrittlement in Fe 3wt Si Single Crystals written by Xingfu Chen and published by . This book was released on 1989 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Embrittlement in Aluminum Alloys written by Thomas Francis Klimowicz and published by . This book was released on 1977 with total page 110 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 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Effects in Materials written by Anthony W. Thompson and published by John Wiley & Sons. This book was released on 2013-09-27 with total page 1303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Fifth International Conference on the Effect of Hydrogen on the Behavior of Materials sponsored by the Structural Materials Division (SMD) Mechanical Metallurgy and Corrosion & Environmental Effects Committees of The Minerals, Metals & Materials Society held at Jackson Lake Lodge, Moran, Wyoming, September 11-14, 1994.
Download or read book Handbook of Structural Life Assessment written by Raouf A. Ibrahim and published by John Wiley & Sons. This book was released on 2017-03-29 with total page 1421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important, self-contained reference deals with structural life assessment (SLA) and structural health monitoring (SHM) in a combined form. SLA periodically evaluates the state and condition of a structural system and provides recommendations for possible maintenance actions or the end of structural service life. It is a diversified field and relies on the theories of fracture mechanics, fatigue damage process, and reliability theory. For common structures, their life assessment is not only governed by the theory of fracture mechanics and fatigue damage process, but by other factors such as corrosion, grounding, and sudden collision. On the other hand, SHM deals with the detection, prediction, and location of crack development online. Both SLA and SHM are combined in a unified and coherent treatment.
Download or read book Hydrogen Embrittlement of a P M 7000 Series Aluminum Alloy with and Without SiC Particulates written by James G. Kohl and published by . This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials Structure Micromechanics of Fracture written by Jaroslav Pokluda and published by Trans Tech Publications Ltd. This book was released on 2005-04-15 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume contains papers selected from the more than 120 contributions presented during the 4th international conference on Materials Structure & Micromechanics of Fracture (MSMF-4), in Brno, Czech Republic, June 23-25, 2004.
Download or read book Hydrogen Embrittlement Revisited by in Situ Electrochemical Nanoindentation written by Afrooz Barnoush and published by . This book was released on 2009-01 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Embrittlement of Two Aligned Ni Al Mo Eutectic Alloys written by Leigh J. Klein and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Hydrogen Embrittlement and Stress corrosion Cracking in an Aluminum zinc magnesium Alloy 5 6 Zn 2 6 Mg written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Tensile tests have been carried out on a high-purity A1-5.6 Zn-2.6 Mg alloy hydrogenated by exposure to moist air. Results indicate that internal hydrogen embrittlement occurs by the formation and rupture of a stress-induced hydride at the grain boundaries. The hydride, identified by electron diffraction as A1H3, is shown to be unstable in laboratory air, reverting to aluminum. The hydride phase was not detected in specimens failed by SCC, despite evidence that hydrogen is transported ahead of advancing stress-corrosion cracks, and this leads to the possibility that a basically different mechanism may be responsible for SCC in this alloy.
Download or read book Embrittlement studies of aluminum alloys written by Glenn E. Stoner and published by . This book was released on 1987 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
