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Showing 1 to 14 of 14 for “"High Temperature Strength"”.
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Microstructure Characterization of SUS444 Ferritic Stainless Steel
… related to the influence of microstructure on high temperature strength and the stability of the microstructure at the high operating temperature range. The goal of this research is to identify the cause for the drastic difference in the stress-strain behavior between two potential manufacturer …
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Factors contributing to the yield strength of polycrystalline nickel-based superalloys
… inimitable mechanical properties, in particular, high temperature strength. As we become increasingly aware of the environmental consequences of air travel, manufacturers are striving to improve engine efficiency. This may be achieved by increasing the operating temperature of the engine, however, …
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The electrical properties of ruthenium-aluminium alloys
… ruthenium-aluminium system have been studied at high temperatures (up to 1000°C). The majority of the ruthenium-aluminium alloy compositions studied lie near or in the ruthenium aluminide phase field. Ruthenium aluminide is a B2 structure intermetallic which is suited to high temperature …
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High temperature aging study on long-term aged Alloy 617 and Alloy 230
… good corrosion resistance and exceptional high-temperature strength. In order to gain a better understanding of the high-temperature degradation process of these materials, long-term (up to 10000 hours) aging experiments have been carried out to investigate the microstructural evolution and …
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Understanding the Yield Behaviour of Single Crystal Ni-based Superalloys
… for turbine applications due to their superior high-temperature strength capabilities. This has been attributed to the γ' precipitates which have the L1₂-ordered crystal structure. Because of the ordered crystal structure, dislocations must travel in pairs, separated by an anti-phase boundary …
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Evaluation of multilayer silicon carbide composite cladding under loss of coolant accident conditions
… it exhibits superior corrosion characteristics, high-temperature strength, and a 1000°C higher melting temperature, all of which are important during a loss of coolant accident (LOCA). To improve the performance of SiC cladding, a multilayered architecture consisting of layers of monolithic SiC …
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An investigation into Vibratory Grinding of hard-to Machine Aerospace Materials
There is an increased demand for high surface finishes and tight tolerances, especially in high value manufacturing processes. However, progress in materials science has led to the development of new materials especially in the aerospace industry, where high heat resistance materials are preferred …
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Messung und Analyse von neutroneninduzierten Aktivitäten in Materialien zukünftiger Kernfusionsreaktoren
… structural materials like EUROFER to improve the high-temperature strength and to maintain superior radiation resistance. CuCrZr alloys are used as a heat sink in the first wall of the blanket and in the divertor. The CuCrZr alloys contain impurities in consequence of the production technology, …
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Simulation of creep in nickel based single crystal superalloys
… Superalloys are finding wide spread use in high temperature gas turbines and other similar applications because of their superior high-temperature strength and creep properties as compared to the other materials. This is due to two factors: solid solution and precipitation strengthening of …
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Microstructural Evolution in Refractory Metal Multi-Component Alloy Systems
… and power-generation efficiency targets demand higher operating temperatures than those tolerated by current Ni-based superalloys, motivating the search for alternative high temperature materials. Refractory superalloys based on AlTaTiZr and AlMoNbTaTiZr have attracted particular interest, as …
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Investigation of new synchrotron X-ray and neutron techniques for local crystallographic analysis of Ni-based single crystal superalloys
… a γ/γʹ microstructure, providing exceptional high- temperature strength and environmental stability, outperforming other known alloy systems. These properties make them useful for gas turbine applications. However, enhancing gas turbine efficiency requires higher operating temperatures, which …
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Surface degradation and creep of Inconel 617 and Haynes 230 at high temperatures
The high temperature gas-cooled reactor (HTGR) design has been selected for the Next Generation Nuclear Plant (NGNP) project. The helium coolant in the primary circuit has been found to contain low levels of impurities (e.g. CO, CO2, H2O, CH4, and H2) after steady-state operation. This can lead to …
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Stability of nickel-base superalloys for turbine disc applications
… of aero-engines will need to operate at temperatures beyond the capabilities of current nickel-base superalloys. As a result, new alloy compositions for turbine disc applications are being developed. Optimising these alloy compositions requires balancing directly competing requirements. …
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Microstructure Dual-Refinement and Mechanical Properties Manipulation of TiBw/TA15(Si) Composites by Thermo-mechanical Processing and Heat Treatment
… with near-α titanium alloy as the matrix exhibit high specific strength and good high-temperature strength. However, the thermo-mechanical processing is limited by the brittleness of the reinforcement, making it difficult to refine the grain size and control the silicide precipitates. The present …