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Showing 1 to 13 of 13 for “"High Temperature Properties"”.
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Studies of the high temperature properties of graphite and liquid carbon using pulsed laser heating
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1987.
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A Study of the Feasibility of Developing Low-Chromium Stainless Steel.
… steels contain over 30% chromium for elevated temperature applications. Some, like types 501 and 502, which contain 4 to 6% chromium, lack passivity in aqueous environments but have high-temperature properties similar to the other grades. 
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Modellierung und Simulation des Warmumformverhaltens von hoch stickstofflegierten Stählen
High nitrogen steels (HNS) differ from conventional austenitic steels on their higher yield and tensile strength as well as improved high temperature strength. HNS show also a better corrosion resistance, pitting resistance and stress corrosion cracking resistance. However, these advantages are …
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Miniature Fiber-Optic Sensors for High-Temperature Harsh Environments
… of physical parameters in harsh environments (high pressure, high temperature, highly corrosive, high electromagnetic interference) is often desired in a variety of areas, such as aerospace, automobile, energy, military systems, and industrial processes. Pressure and temperature are among the …
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Toughened bismaleimides, their carbon fiber composites and interphase evaluation studies
… was utilized to improve the fracture toughness properties of these important materials, which have applications as matrix resins for high performance composites. Modifier molecular weight, end group functionality, backbone structure and weight percent incorporation were all studied with respect …
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High temperature mechanical properties of cast as well as powder metallurgical manufactured metallic foams
This work deals with studying the high temperature mechanical properties of different types of metallic foams. The foams which have been used in this work were manufactured by two different processing methods. Al-foams (trade-name Alporas) were processed by a melt metallurgical route whereas …
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Effect of geometry and composition of Cr steels on oxide scale properties relevant for interconnector applications in Solid Oxide Fuel Cells (SOFCs)
A number of high-Cr ferritic steels have been investigated as possible construction materials (interconnectors) for Solid Oxide Fuel Cells (SOFCs). The mentioned materials have the advantage of a higher electronic conductivity, lower cost and easier fabrication than so far used lanthanum …
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Deformation at Low Temperatures in Single Crystal Ni-base Superalloys
… has focused on creep behaviour in the high-temperature regime (above 700 °C). However, the study of deformation in the range of 20 °C to 700 °C is critical to understanding behaviour in the shanks of turbine blades in service, where the low-temperature properties of single crystal …
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Effect of systematic variation in Co:Ni ratio on elemental partitioning, lattice misfit and oxidation behaviour of γ'-strengthened (Ni,Co)75Al5Ti5Cr15 (at.%) alloys
… discs are operating at the limit of their high-temperature capability. Next-generation turbine disc superalloys must be capable of sustaining the higher operating temperatures (approaching 800°C) and stresses required for greater thermal efficiency, whilst maintaining mechanical integrity …
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Synthesis and characterization of polyether-ester liquid crystalline polyesters and poly(arylene ether ketone)-lcp segmented copolymers
… to be a novel monomer, was also prepared in high yields from 6-methoxy-2-bromonaphthalene and ethyl-4-hydroxybenzoate via the Ullmann condensation reaction. These monomers were found to be useful for synthesizing LCP copolymers and segmented copolymers. A variety of polyarylates based on …
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Model development and validation of bituminous-based crack sealants
… and seal sections. Field performance results highlighted the importance of test site selection, especially for clean and seal application. Statistical correlations of tests parameters with the field performance were performed. A composite score approach, combining ranking and correlation, was …
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Enhancing hot tooling to forge high-γ ′ superalloys
High-γ ′ nickel superalloys are increasingly employed in aircraft turbines for their remarkable high-temperature properties to enhance engine efficiency and reduce aviation emissions. These alloys are forged at temperatures approaching 1100 °C and require careful selection of process parameters to …
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Influence of surface hardening on single crystal nickel-based superalloys
… superalloys. These alloys have excellent high temperature properties, and consist of a randomly substituted face centred cubic matrix phase known as γ, together with a large volume fraction of an ordered precipitate phase, most often the primitive cubic γ' phase. Superalloys cast as single …