Download or read book Effects of Environment on the Mechanical Properties of Iron Aluminides written by Richard Lynch (J.) and published by . This book was released on 1992 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Processing Properties and Applications of Iron Aluminides written by Joachim H. Schneibel and published by Tms. This book was released on 1994-01-01 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: While there are many publications dealing with intermetallic materials, this book is unique in that it focuses on one specific type of intermetallic, iron aluminides. 28 reviewed papers present recent significant advances in the general areas of processing, microstructure and mechanical behaviour, dislocations and defects, and environmental effects. It should be of interest to anyone involved with iron aluminide intermetallics.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-11 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Environment on Mechanical Properties of Metals written by and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Environment on Mechanical Properties of Metals written by Irvin Raymond Kramer and published by . This book was released on 1961 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Environment on Mechanical Properties of Metals written by Irvin R. Kramer and published by . This book was released on 1961 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Effects on Iron Aluminides written by and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion properties of reference Fe3Al (28 at. % Al)-based compositions containing 2 and 5 at. % Cr were compared in a mixed gas composed of H2S-H2-H2O-Ar and in dehumidified air. The parabolic rate constant at 800C was a factor of 200 higher for the 5% Cr composition. Similar exposure of an alloy containing 16% Al and 5% Cr resulted in significantly higher weight gains than the Fe3Al -- 5% Cr composition. However all the alloys were significantly more resistant to the mixed gas than iron-based alloys with higher chromium and lower aluminum contents. The oxidation rates of the 2 and 5% Cr alloys were comparable in dry air at 800C and were a factor of two lower than the rate of the 2% Cr alloy in the mixed gas. An alloy of Fe with 16% Al, 5% Cr, and 0.1% Zr showed improved cyclic oxidation resistance in air at 900 and 1000C relative to binary alloys of 16 and 20% Al. The extent of oxidation of these 16% Al alloys was comparable to Zr-containing Fe3Al aluminides (28% Al) that develop adherent scales.
Download or read book High Temperature Aluminides and Intermetallics written by S.H. Whang and published by Elsevier. This book was released on 2013-10-22 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of proceedings is concerned with an increasingly important area, that of intermetallics and high temperature aluminides, which has recently been attracting a great deal of attention. Nearly 150 papers presented at the meeting held in San Diego in September 1991 are reproduced here. They cover a wide range of related topics such as the bonding characteristic and alloying behaviour of TiA1 intermetallic compounds and the cleavage fracture of ordered intermetallic alloys. All the papers have been reviewed according to the standards set by Materials Science and Engineering. This book will be of interest to metallurgists and materials scientists working with composites who are interested in the latest developments in this fast–moving field.
Download or read book Mechanical Properties and Phase Transformations of Multiphase Intermetallic Alloys written by Anthony F. Giamei and published by Minerals, Metals, & Materials Society. This book was released on 1995 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 19 papers in this volume were presented at the symposium of the same title held at Materials Week '94 in Rosemont, Illinois, USA held on October 2-6, 1994. A recent understanding of the roles of phase transformations and microstructures in multi-phase intermetallic alloys in improving mechanical properties is presented.
Download or read book Effects of Environment on Mechanical Properties of Metals written by Franklin Book Company, Incorporated and published by . This book was released on 1961-01 with total page 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 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book ASM Specialty Handbook written by Joseph R. Davis and published by ASM International. This book was released on 1997-01-01 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials covered include carbon, alloy and stainless steels; alloy cast irons; high-alloy cast steels; superalloys; titanium and titanium alloys; refractory metals and alloys; nickel-chromium and nickel-thoria alloys; structural intermetallics; structural ceramics, cermets, and cemented carbides; and carbon-composites.
Download or read book Effect of Environment on the Mechanical Properties of Passive Oxide Films on Aluminum written by Ashok Kumar Bhambri and published by . This book was released on 1971 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Composition on Environmental Embrittlement of Iron Aluminides written by and published by . This book was released on 1996 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of water vapor in air and hydrogen gas on the tensile and fatigue crack growth behavior of Fe3Al alloys have been studied at room temperature. Fe-28a% Al-5a% Cr alloys to which either Zr alone or Zr and C have been added and tested in controlled humidity air environments as well as in 1.3 atm hydrogen or oxygen gas and in vacuum. As with other Fe3Al alloys, oxygen produces the lowest crack growth rates as well as the highest critical stress intensities and tensile ductility in each of the alloys tested. However, while Zr lowers crack growth rates in the Paris regime, there is no apparent beneficial effect on crack growth thresholds. Hydrogen gas also produces unusual results. While crack growth rates are very high in hydrogen in the Paris regime for all alloys, hydrogen only lowers the crack growth threshold relative to air in ternary Fe-28Al-5Cr; it does not lower the threshold in the Zr-containing alloys. It was found that decreased test frequency leads to increased crack growth rates in a Zr-containing alloy which points to a moisture-induced embrittlement mechanism responsible for the higher crack growth rates in air. Fracture path tends to be insensitive to environment for each alloy.
Download or read book Environmental Effects on Iron Aluminide written by and published by . This book was released on 1994 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air oxidation tests of iron-aluminum alloys containing 16 and 28 at. % Al, were conducted at 1300C to determine the effect of alloy composition and section thickness on time to breakdown of oxidation resistance. Oxidation rates of 16% Al were significantly higher than for 28% Al (Fe3Al). The times over which the oxide scales remained protective correlated with extent of aluminum depletion of the alloy matrix and were therefore a direct function of the initial aluminum content of the alloy, the section thickness, and oxidation rate. The oxidation rate of the Fe3Al alloys was significantly reduced by addition of 0.1% Zr, which improved the adherence of the scale during thermal cycling to room temperature. However, the oxidation rates of the Fe3Al alloys were higher at 1300C than those reported for oxide-dispersion-strengthened (ODS) Fe-18%Cr-10%Al alloys containing Y2O3. Times to the onset of breakaway oxidation were similar for zirconium-containing Fe3Al and the ODS alloys, the lower oxidation rate of the latter offsetting the higher initial aluminum of the former. Studies of the effects of chlorine (HCl) on the oxidation/sulfidation resistance of Fe3Al- based alloys were conducted using test facilities at the National Physical Laboratory (NPL) in the United Kingdom. Alloys were exposed to a test gas composed of CO2, H2, H2O, and H2S Plus 1000--5000 ppm HCl at 450 and 550C for 1000 h. Weight gains were relatively low and were generally less than companion specimens of Fe-Cr-Al alloys.
Download or read book High Performance Ferrous Alloys written by Radhakanta Rana and published by Springer Nature. This book was released on 2020-12-18 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current state of understanding of emerging iron alloys and high-alloy ferrous systems, in comparison with some conventional steels, is compiled in this single volume to further their development. While most of the conventional steels are produced routinely today, many advanced high strength steels and iron-based alloys are still in the laboratory stage. The iron-based emerging alloys can yield high levels of mechanical and physical properties due to their new alloy concepts and novel microstructures leading to multiple benefits of their use in terms of sustainability and environmental impact. This book contains introductory chapters that present the requisite background knowledge on thermodynamics, phase diagrams, and processing routes used for the ferrous alloys to enable the readers a smooth understanding of the main chapters. Then, an overview of the conventional microalloyed steels and advanced high strength steels is given to present the benchmark of the existing steels and ferrous alloys manifesting their current state-of-the-art in terms of physical metallurgy and engineering applications. Subsequent chapters detail novel, emerging ferrous alloys and high-alloy ferrous systems. Summarizes the state-of-the-art of emerging iron-based alloys and the new processing and physical metallurgy-related developments of high-alloy iron systems; Explores new iron-based systems driven by the need for new properties, enhanced performance, sustainable processes and educed environmental impact; Compiles cutting-edge research on the progress of materials science of iron-based systems, from physical metallurgy to engineering applications, and possible avenues for future research.
Download or read book ORNL 2 A written by and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alloys based on the Fe3Al system are under development at Oak Ridge National Laboratory (ORNL) in support of coal conversion and combustion materials requirements. Using H2S-H2-H2O gas mixtures, several experimental iron-aluminum alloys have been tested to assess the effects of aluminum concentration on corrosion behavior at 700 to 800°C in a simulated gasifier environment. Included in these studies are alloys that have been aluminized to convert the outer surfaces to FeAl (50 at. % Al). Thermogravimetric analyses, metallographic and chemical analyses of the corrosion product scales, are performed to determine the role of constituent metallic elements on oxidation and sulfidation processes. The corrosion resistance of Fe3Al alloys is being evaluated by exposures at 600 to 900°C in the gas-cooler section of an operating gasifier in the United Kingdom. The nature of protective scales formed on Fe3Al-based alloys in sulfur-containing atmospheres, as compared to air, is being evaluated using secondary ion mass spectroscopy (SIMS) and transmission electron microscopy (TEM). Marker experiments using 18O are conducted in conjunction with the SIMS studies to monitor oxide growth processes. 4 refs., 3 figs., 1 tab.
