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Microstructure and Elevated Temperature Flexure Testing of Tungsten Produced by Electron Beam Additive Manufacturing
JOM - Tập 75 - Trang 4094-4107 - 2023
Due to their superior high-temperature thermomechanical capabilities, sputter erosion durability, and excellent resistance to hydrogen isotopes, tungsten materials have garnered significant interest in fusion nuclear applications. However, low room-temperature ductility and complex machining strategies present significant challenges for traditional fabrication. Electron beam powder bed fusion (EB-......
Damage-Tolerant Polymer Composite Systems
JOM - Tập 40 - Trang 51-54 - 2012
One of the reasons for the rapid growth in the application of polymer composites is the opportunity they provide for the design and construction of composite structures that are especially resistant to losses of strength or reduced life resulting from damage during service. The usefulness of such materials is enhanced by the variety of reinforcement schemes that can be chosen to reflect specific s......
Effect of Molybdenum on Creep Properties of a Ferritic 18Cr-Nb-Ti Steel for Catalytic Converters
JOM - Tập 33 - Trang 19-24 - 2014
The effect of 1 and 2% molybdenum additions on the creep rate and rupture strength of a Nb-Ti stabilized 18% Cr steel at 870°C (1600°F) was investigated. The steels were tested in three conditions: as-recrystallized, prestrained 5%, and aged at 760°C (1400°F) for 200 hours. Molybdenum improves the rupture strength and reduces the creep rate of the steel in all three conditions. Molybdenum is espec......
Effect of orientation on the plastic deformation of aluminum single crystals and bicrystals
JOM - Tập 9 - Trang 136-140 - 2017
Tensile stress-strain curves are reported for aluminum single and bicrystal specimens. Isoaxial bicrystal specimens were used with one crystal rotated 45° about the stress axis with respect to the other. The axial orientations were chosen so that one, two, four, six, or eight slip systems were initially equally favored. The 45° grain boundary did not raise the stress-strain curve of the bicrystal ......
Refractory Corrosion Mechanisms in a Novel High Carbon Ferromanganese Production Furnace
JOM - Tập 68 - Trang 3029-3039 - 2016
The present paper presents the refractory design for a novel HCFeMn smelting furnace that, other than standard submerged arc furnaces, allows the processing of fine ores. A combination of basic and non-basic materials, comprising bricks, castables and ramming was chosen, under consideration of the unique furnace design and process conditions. Post-mortem investigations on refractory samples from ......
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