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Development Of Iron Aluminides
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Download or read book Development of Iron Aluminides written by and published by . This book was released on 1987 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This program addresses the development of iron aluminide base alloys by rapid solidification and the determination of their potential for use in aircraft turbine engines as alternatives to high chromium steels and nickel-base alloys. The program was divided into three tasks. A process and model development task to define thermomechanical processing requirements for Fe3A1 base alloys, a task to produce and deliver to the Air Force Materials Laboratory a number of alloys produced by the P & W rapidly solidified powder process and a task for the development of austenitic Fe-Mn-A1 alloys with improved elevated temperature properties.
Book Synopsis Development of Iron Aluminides for Gasification Systems by :
Download or read book Development of Iron Aluminides for Gasification Systems written by and published by . This book was released on 1986 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Initial Development of Nickel and Nickel-iron Aluminides for Structural Uses by :
Download or read book Initial Development of Nickel and Nickel-iron Aluminides for Structural Uses written by and published by . This book was released on 1984 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase Development, Texture and Internal Stress Evolution During the Oxidation of Iron Aluminides by : Pedro Paiva Brito
Download or read book Phase Development, Texture and Internal Stress Evolution During the Oxidation of Iron Aluminides written by Pedro Paiva Brito and published by . This book was released on 2010 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Nickel and Nickel-Iron Aluminides for Elevated-Temperature Structural Use by : CT. Liu
Download or read book Development of Nickel and Nickel-Iron Aluminides for Elevated-Temperature Structural Use written by CT. Liu and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper summarizes recent work on alloy design of Ni3Al alloys for structural use at elevated temperatures. Efforts on alloy development have been focused on four areas: (1) improvement of ductility at ambient temperatures, (2) enhancement of high-temperature strength by solid-solution effects, (3) alleviation of dynamic embrittlement in oxidizing environments, and (4) fabrication improvement. Nickel aluminides with promising properties have been developed by microalloying with boron and macroalloying with chromium, zirconium (or hafnium), and iron additions.
Book Synopsis Satire des romans du jour, considérés dans leur influence sur le goût et les moeurs de la nation. Pièce couronnée par l'Athénée de Lyon par Ch. Millevoye by : Charles Hubert Millevoye
Download or read book Satire des romans du jour, considérés dans leur influence sur le goût et les moeurs de la nation. Pièce couronnée par l'Athénée de Lyon par Ch. Millevoye written by Charles Hubert Millevoye and published by . This book was released on 1802 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical Metallurgy and processing of Intermetallic Compounds by : N.S. Stoloff
Download or read book Physical Metallurgy and processing of Intermetallic Compounds written by N.S. Stoloff and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The attractive physical and mechanical properties of ordered intermetallic alloys have been recognized since early in this century. However, periodic attempts to develop intermetallics for structural applications were unsuc cessful, due in major part to the twin handicaps of inadequate low-temper ature ductility or toughness, together with poor elevated-temperature creep strength. The discovery, in 1979, by Aoki and Izumi in Japan that small additions of boron caused a dramatic improvement in the ductility of Ni3Al was a major factor in launching a new wave of fundamental and applied research on intermetallics. Another important factor was the issuance in 1984 of a National Materials Advisory Board reported entitled "Structural Uses for Ductile Ordered Alloys," which identified numerous potential defense-related applications and proposed the launching of a coordinated development program to gather engineering property and processing data. A substantial research effort on titanium aluminides was already underway at the Air Force Materials Laboratory at Wright Patterson Air Force Base in Ohio and, with Air Force support, at several industrial and university laboratories. Smaller programs also were under way at Oak Ridge National Laboratory, under Department of Energy sponsorship. These research efforts were soon augmented in the United States by funding from Department of Defense agencies such as Office of Naval Research and Air Force Office of Scientific Research, and by the National Science Foundation.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-06 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Al2O3 Scale Development on Iron Aluminides by :
Download or read book Al2O3 Scale Development on Iron Aluminides written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure and phase of the Al2O3 scale that forms on an Fe3Al-based alloy (Fe-28Al-5Cr) (at %) was investigated by transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). Oxidation was performed at 900 C and 1000 C for up to 190 min. TEM revealed that single-layer scales were formed after short oxidation times. Electron diffraction was used to show that the scales are composed of nanoscale crystallites of the [theta], [gamma], and [alpha] phases of alumina. Band-like structure was observed extending along three 120{sup o}-separated directions within the surface plane. Textured [theta] and [gamma] grains were the main components of the bands, while mixed [alpha] and transient phases were found between the bands. Extended oxidation produced a double-layered scale structure, with a continuous [alpha] layer at the scale/alloy interface, and a [gamma]/[theta] layer at the gas surface. The mechanism for the formation of Al2O3 scales on iron aluminide alloys is discussed and compared to that for nickel aluminide alloys.
Book Synopsis Corrosion Performance of Iron Aluminides in Single- and Multioxidant Environments by :
Download or read book Corrosion Performance of Iron Aluminides in Single- and Multioxidant Environments written by and published by . This book was released on 1998 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron aluminide intermetallics are being developed for use as structural materials and/or as cladding for conventional engineering alloys. In addition to their strength advantages, these materials exhibit excellent resistance to corrosion in single- and multioxidant environments at elevated temperatures through the formation of slow-growing, adherent alumina scales. Even though these intermetallics develop protective oxide scales in single-oxidant environments, the simultaneous presence of several reactants in the environment (typical of practical systems) can lead to development of oxide scales that are nonprotective and that undergo breakaway corrosion, or to nonoxide scales that are detrimental to the performance of the underlying alloy. This paper describes the corrosion performance of Fe-Al intermetallics in environments that contain sulfur, carbon, chlorine, and oxygen and that are typical of fossil energy systems. Emphasis is on mechanisms of scale development and breakdown, performance envelopes for long-term usage of these materials, and approaches to modifying the surfaces of engineering alloys by cladding or coating them with intermetallics to improve their corrosion resistance.
Book Synopsis Development of Ductile Fe3Al-based Aluminides by :
Download or read book Development of Ductile Fe3Al-based Aluminides written by and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron aluminides based on Fe3Al are of interest because of their excellent oxidation and corrosion resistance, especially in sulfur-bearing atmospheres. Work at ORNL has centered on developing Fe3Al-based alloys with improved ambient temperature ductilities and increased strengths at temperatures of 600--700C. Ambient temperature brittleness in this system is not ''inherent, '' but is caused by atomic hydrogen which is produced by an environmental reaction between aluminum in the alloy and water vapor in the atmosphere. Great strides have been made in understanding this embrittlement Phenomenon, and the production of alloys with room temperature ductilities of over 10% and tensile yield strengths at 600C of as high as 500 MPa is now possible through modifications in alloy composition and control of thermomechanical processing techniques. Creep rupture lifes of over 200 h at 593C (1100°F) and 207 MPa (30 ksi) can also be produced through control of alloy composition and microstructure. This paper summarizes our present efforts to improve the tensile and creep rupture properties and gives the status of efforts to commercialize Fe3Al-based alloy compositions.
Book Synopsis Energy Materials Coordinating Committe (EMaCC): Fiscal Year 1997 Annual Technical Report by :
Download or read book Energy Materials Coordinating Committe (EMaCC): Fiscal Year 1997 Annual Technical Report written by and published by DIANE Publishing. This book was released on with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Performance Ferrous Alloys by : Radhakanta Rana
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.
Book Synopsis Grain Growth Kinetics of Iron Aluminide Alloy FA-129 by : Audrey A. Fasching
Download or read book Grain Growth Kinetics of Iron Aluminide Alloy FA-129 written by Audrey A. Fasching and published by . This book was released on 1993 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy Materials Coordinating Committe (EMaCC): Fiscal Year 1996 Annual Technical Report by :
Download or read book Energy Materials Coordinating Committe (EMaCC): Fiscal Year 1996 Annual Technical Report written by and published by DIANE Publishing. This book was released on with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emerging Engineering Materials by : Mel Schwartz
Download or read book Emerging Engineering Materials written by Mel Schwartz and published by CRC Press. This book was released on 1996-03-21 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Author's Preface The rapid advances in Materials Science and Engineering . . . have convinced many that the design, production and use of advanced materials will shape future manufacturing industries. Competitive advantage within entire industries is shaped by the quality of the materials available to the manufacturers; the early availability of a new material can be leveraged manyfold. In addition, advanced materials or advanced materials processing can signal the birth or death of entire industries, and access to higher quality and lower cost material has permitted some countries to obtain market dominance in several key industries. Much of the new strategy entails harnessing the potential of innovative technology, that is, going back to the nano and molecular states of materials and new, effective ways to create, process, and eventually use them. Rather than being concerned with a relatively small number of generic materials, each possessing a broad range of uses, the materials sector is increasingly concerned with tailoring a growing list of ever more specialized materials for narrow niche applications. New products with better growth prospects such as high-performance alloys, composites, laminates, and a variety of coatings have been emphasized. Materials firms also have sought ways to overcome the weaknesses of ceramics and fully exploit their formidable strengths. "Functional materials" that do more than support structures have been developed for use in sophisticated electronic, optical, magnetic, and biotech applications. This book will . . . show what materials will be available in the next decade or two, in addition to those currently available and their effect on material design, start-up, and production processes.
