Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of several complex temperature-resistant alloys.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun metallurgy Any of several high-performance
alloys that are resistant to high temperatures
Etymologies
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Examples
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Thirty-eight percent of annual nickel use is in nonferrous alloys (or mixed with metals other than steel) and [[superalloy]] s (metal mixtures designed to withstand extremely high temperatures and/or pressures, or to have high electrical conductivity).
Nickel 2008
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So yes, I think that to me right now, the area that feels the tightest is material I buy on the outside, in the fastener superalloy side.
unknown title 2011
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Today, titanium is gettable, haven't seen the lead times really stretch out, but there's no doubt about it that the superalloy lead times have stretched out, the stuff we buy from the outside.
unknown title 2011
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However, with automotive softening somewhat next year and commercial aviation more likely to buy superalloy parts than mainstream steel, copper and aluminum, power metallurgy-based parts will likely only rise to 533,000 tons next year from 513,000 tons this year.
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Whereas a nickel-based superalloy, like most structural alloys, can show a significant amount of ductility and plastic deformation before it breaks, the newer titanium aluminides by comparison are relatively brittle.
The Engineer - News 2010
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White adds that powder metal tool steel is rising in use by 10% annually and the aviation/aerospace industry, jet engine, oilfield, and petrochemical markets are using more and more nickel-cobalt and other superalloy parts made from metal powders.
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As important as the formulation of the superalloy materials are, the hollow turbine blades only survive the extreme temperatures found in the aero engine because of the exacting manufacturing techniques that are used to make them.
The Engineer - News 2010
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The Advanced Materials division's fourth quarter 2009 financial results continued to be impacted by sluggish demand for the majority of its products, most notably in the steel, superalloy and titanium markets.
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Hence the use of older polycrystalline superalloys - in which grain boundaries in the superalloy acted as fast diffusion paths - was superseded by the use of directionally solidified materials, where the grain boundaries created in the manufacturing process are all aligned parallel to the loading axis.
The Engineer - News 2010
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What they do have are excellent mechanical properties and oxidation and corrosion resistance at elevated temperatures, which make them a possible replacement for traditional nickel-based superalloy components in aircraft turbine engines.
The Engineer - News 2010
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