Download or read book The Creep of Dispersion Strengthened Ni Co Alloys written by J. HANCOCK and published by . This book was released on with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep and Tensile Properties of Several Oxide dispersion strengthened Nickel base Alloys at 1365 K written by John Daniel Whittenberger and published by . This book was released on 1977 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dispersion Strengthening of Metals written by Facundo Rolf Morral and published by . This book was released on 1977 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creep and Tensile Properties of Several Oxide dispersion strengthened Nickel base Alloys at 1365 K written by J. Daniel Whittenberger 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 Diffusional Creep and Creep Degradation in the Dispersion strengthened Alloy TD NiCr written by John Daniel Whittenberger and published by . This book was released on 1972 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dispersoid-free regions were observed in TD-NiCr (Ni-20Cr-2ThO2) after slow strain rate testing in air from 1145 to 1590 K. Formation of the dispersoid-free regions appears to be the result of diffusional creep. The net effect of this creep is the degradation of TD-NiCr to a duplex microstructure. Degradation is further enhanced by the formation of voids and integranular oxidation in the thoria-free regions. These regions apparently provided sites for void formation and oxide growth since the strength and oxidation resistance of Ni-20Cr is much less than Ni-20Cr-2ThO2. This localized oxidation does not appear to reduce the static load bearing capacity of TD-NiCr since long stress rupture lives were observed even with heavily oxidized microstructures. But this oxidation does significantly reduce the ductility and impact resistance of the material. Dispersoid-free bands and voids were also observed for two other dispersion strengthened alloys, TD-NiCrAl and IN-853. Thus, it appears that diffusional creep is charactertistic of dispersion-strengthened alloys and can play a major role in the creep degradation of these materials.

Download or read book The Role of Grain Size and Shape in the Strengthening of Dispersion Hardened Nickel Alloys written by B. A. Wilcox and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of High Temperature Creep of Dispersion Strengthened Ni and Ni 20Cr written by Richard Winchell Lund and published by . This book was released on 1975 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Survey of Dispersion Strengthening of Metals and Alloys summary Technical Report written by Rointan Framroze Bunshah and published by . This book was released on 1959 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Stability and Mechanical Behavior of Thermomechanically Processed Dispersion Strengthened Nickel Alloys Final Report written by and published by . This book was released on 1971 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Metallic Composites written by Shojiro Ochiai and published by CRC Press. This book was released on 1993-12-17 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides coverage of dispersion-hardened and fibre-reinforced alloys, addressing principal mechanisms, processing and applications. Mechanical behaviour based on dislocation theory and elastic-plastic mechanics is dealt with and data on advanced composites are provided.

Download or read book Technical Applications for Oxide dispersion Strengthened Materials written by G. Mervin Ault and published by . This book was released on 1966 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxide Dispersion Strengthened Alloys written by Nicholas John Grant and published by . This book was released on 1967 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Dispersion Strengthened Nickel and Cobalt Base Alloys written by Richard F. Cheney and published by . This book was released on 1965 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two methods were compared for preparing dispersion-strengthened nickel- and cobalt-base alloys. A technique of selectively reducing intimately mixed oxides, which were prepared by atomizing and drying a solution of the components, was more successful than one involving the coating of dispersoid particles with the matrix by vapor deposition. The conditions were determined for preparing Ni-15Mo-4ThO2 and Co-15Mo-4ThO2 powders by selective reduction. Hot pressing, hydrogen sintering, and powder rolling were evaluated for powder consolidation. The conditions for successful rolling, extrusion, and forging were investigated for Ni-15Mo-4ThO2. Process temperatures above 1200C promoted ThO2 growth to 400-500A. Deformation-anneal sequences were critical to good strength at elevated temperatures. Ultimate strengths of 21 ksi at 1800F were obtained and higher strengths seem possible. Molybdenum considerably improved the matrix strength to at least 1400F.

Download or read book Fundamental Investigations of Creep and Fatigue of Dispersion Strengthened Nb Alloys written by and published by . This book was released on 1995 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the three years of this program, the creep studies focused on a select precipitation strengthened alloy of niobium shown to possess superior creep resistance at stress levels normally targeted in design applications. The alloy selected was a carbide precipitation strengthened niobium-zirconium-alloy (Nb-1wt%Zr-0.1wt%C) commercially known as PWC-11. The carbide precipitations are produced in-situ during the thermomechanical processing of the material and have proven to be extremely stable at service temperature. Transmission electron microscopy was used to examine both the internal structure of the crept material as well as the size distribution of the carbide particles extracted from the metal matrix. X-ray diffraction analysis of the extracted carbide particles identified their chemical make-up necessary for characterizing their thermodynamic stability. A thermodynamic model was developed which supports the observed parameters of the carbide precipitates and thus is useful in predicting the high temperature mechanical properties of this and similar alloy systems. jg p1.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxide Dispersion Strengthened Refractory Alloys written by Anshuman Patra and published by CRC Press. This book was released on 2022-05-12 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refractory metals such as W, Mo, Ta, Nb, and Re have immense potential for application in plasma-facing materials in nuclear reactors, defense materials, aviation counterweights, heating elements in furnaces, and so forth. This book presents a wide perspective of oxide dispersion strengthened refractory alloys fabrication and critical properties. It provides a comprehensive road map for an appropriate basis for alloy design, process parameter selection, fabrication route, and deformation behavior for oxide dispersion strengthened refractory alloys. It further covers achievement of application-oriented properties and critical process-regulating parameters for development of sustainable materials. Features: Covers development of oxide dispersion strengthened sustainable material to withstand high-temperature environments Describes stimulating application-oriented final mechanical properties Illustrates fabrication of alloys through effective route to achieve desired properties Presents in-depth explanation of deformation behavior at ambient and high temperatures Explores critical applications of the alloys in nuclear reactors, defense, and aviation sectors Oxide Dispersion Strengthened Refractory Alloys will be of interest to graduate students and researchers in high-temperature materials, mechanics, metallurgy, powder metallurgy, and physical metallurgy.