
	Where results make sense

Topic: Superalloy

	Superalloy - Wikipedia, the free encyclopedia
		Superalloys exhibit excellent mechanical strength and creep resistance at high temperatures, good surface stability, and corrosion and oxidation resistance.
		Superalloys are metallic materials for service at high temperatures, particularly in the hot zones of gas turbines.
		The up-to-date superalloys of the fourth generation are used as single crystals and are extra alloyed, especially with ruthenium.
	en.wikipedia.org /wiki/Superalloy (1169 words)

	Method for treating superalloy castings - Patent 4021910
		The subject matter of this invention generally comprises a method for treating superalloy castings which are subject to the formation of externally connected defects and which may be considered unsuitable for use without the elimination of the defects.
		The invention particularly relates to superalloy investment castings of the type formed in shell molds and the like, that is, castings which are considered precision castings and which are, therefore, relatively expensive.
		In accordance with the procedure of the invention, superalloy castings are formed in ceramic molds at which time the portions of the castings which solidify directly against the mold wall constitute a substantially continuous skin.
	www.freepatentsonline.com /4021910.html (4125 words)

	Selection Of Age-Hardenable Superalloys
		Iron-based superalloys are less costly, but are less tolerant of alloying additions and typically have lower mechanical properties and maximum temperature limitations.
		While most of the superalloys employ the titanium-rich gamma prime phase for age hardening, a niobium-rich variant called gamma double prime is the primary strengthening phase in some superalloys such as Pyromet Alloy 706 and Pyromet Alloy 718.
		Since superalloys are designed for high temperature strength and resistance to deformation, processing difficulty and cost also increase with hot strength and maximum temperature capability.
	www.cartech.com /news/wr_age_harden_superalloys.html (2927 words)

	Final Determination in the Antidumping Duty Investigation on Imports of Superalloy Degassed Chromium from Japan - ...
		Superalloy degassed chromium generally is sold in briquetted form, as “pellets” or “compacts,” which typically are 1½ inches x 1 inch x 1 inch or smaller in size and have a smooth surface.
		Superalloy degassed chromium is currently classifiable under subheading 8112.21.00 of the Harmonized Tariff Schedule of the United States (HTSUS).
		Superalloy degassed chromium is used predominantly to produce high-end superalloys that are used to make the most critical components in jet aircraft engines and gas turbine engines used for power generation.
	www.ita.doc.gov /media/FactSheet/1005/chromium_102605.html (575 words)

	U.S. Patent: 6066405 - Nickel-base superalloy having an optimized platinum-aluminide coating - May 23, 2000
		A nickel-base superalloy substrate includes a surface region having an integrated aluminum content of from about 18 to about 24 percent by weight and an integrated platinum content of from about 18 to about 45 percent by weight, with the balance components of the substrate.
		The article of claim 1, wherein the nickel-base superalloy substrate is substantially a single crystal and the substrate bulk composition includes from about 5 to about 16 weight percent aluminum and from about 1 to about 8 weight percent rhenium.
		The substrate is a nickel-base superalloy, preferably an advanced second or third generation, nickel-base single-crystal superalloy containing substantial amounts of both aluminum and rhenium.
	www.everypatent.com /comp/pat6066405.html (3472 words)

	Superalloy scrap demand reaching record levels American Metal Market - Find Articles
		Orders rolled in to the superalloy producers, who in turn looked to the scrap processors to provide the necessary raw material to produce their products.
		This rising demand for superalloy scrap, however, followed on the heels of what had been a period of low manufacturing and scrap generation in 1998 and 1999.
		With little demand from the superalloy industry in 1998 and 1999, the material had been redirected to stainless mills and refineries for its intrinsic nickel, chrome, molybdenum, and cobalt value.
	www.findarticles.com /p/articles/mi_m3MKT/is_166_109/ai_77877256 (1020 words)

	Superalloy Investment Casting,Investment Casting by SIMIS
		Superalloy casting is widely used in aviation engine, aerospace engine, gas turbine, ship, metallurgy, petroleum and glass industry for its super anti-heat, anti-oxidation and anti-corrosion property.
		The superalloy casting is complicated and they must be produced through the vacuum induction melting technology.
		Superalloy casting mainly consists of nickel base alloy castings, chromium base alloy castings, cobalt base alloy casting and nickel-chromium base alloy castings and so on.
	www.investment-casting.biz /superalloy_investment_casting.html (144 words)

	APFIM and APT of Superalloy (Site not responding. Last check: 2007-10-13)
		Background — Nickel-based superalloys that are used for turbine blades in jet engines derive their good mechanical properties at elevated temperatures from a fine dispersion of
		At high temperatures, the strength of the superalloy is determined predominantly by the strength of the
		In the niobium-containing Alloy 718 superalloy, atom probe tomography has established that the secondary precipitates formed at lower temperatures (600 to 760°C) were divided into two distinct regions enriched in either niobium or in aluminum and titanium with compositions that are characteristic of the
	www.ornl.gov /share/apfim_superalloy.html (477 words)

	The Structural Evolution of Superalloy Ingots during Hot Working
		When evaluating temperature ranges for hot-working superalloys, it is usually not sufficient to merely heat directly to various temperatures; it is also necessary to acquire on-cooling data, where specimens are tested after cooling from a temperature corresponding to the furnace temperature in a hot-working operation.
		Superalloys are generally made using vacuum-induction melting (VIM) followed by either vacuum-arc remelting (VAR), electroslag remelting (ESR), or a combination of ESR followed by VAR (triple-melted).
		Superalloys highly prone to segregation are limited to diameters on the order of 500 mm, while some superalloys can be melted to diameters of 1,000 mm or larger.
	www.tms.org /pubs/journals/JOM/9901/ForbesJones-9901.html (3592 words)

	Coated superalloy article - Patent 4005989
		Prior to the introduction of the MCrAlY-type coatings the superalloys were, as previously mentioned, typically protected through the formation of an aluminide directly on and by reaction with the superalloy surface by exposure of that surface at high temperature to aluminum or aluminum containing vapors.
		The present invention contemplates a coated article comprising a superalloy substrate having an aluminide coating composed primarily of the aluminide of the basis metal with an overcoat comprising an MCrAlY-type alloy.
		The superalloys are generally those alloys characterized as nickel, cobalt or iron base alloys which display high strengths at high temperatures.
	www.freepatentsonline.com /4005989.html (2030 words)

	Structural Benchmark Testing of Superalloy Lattice Block Subelements Completed
		The testing was performed in-house at the NASA Glenn Research Center Structural Benchmark Test Facility, where the subelement-sized beam specimens were loaded at room and elevated temperatures to observe their elastic and plastic behavior, strength, and fatigue resistance.
		Superalloy lattice block panels, which are produced directly by investment casting, are composed of thin ligaments arranged in three-dimensional triangulated trusslike structures (see the preceding figure).
		Inconel 718 (IN 718) and MarM-247 superalloy lattice block panels have been developed under NASA's Ultra-Efficient Engine Technology Project and Higher Operating Temperature Propulsion Components Project to take advantage of the superalloys' high strength and elevated temperature capability with the inherent light weight and high stiffness of the lattice architecture (ref. 1).
	www.grc.nasa.gov /WWW/RT/2003/5000/5920krause1.html (582 words)

	Alcoa -- Product Catalog: Nickel and Cobalt Superalloy Castings
		Howmet's expertise in the investment casting of nickel and cobalt superalloys is unsurpassed.
		With nine superalloy casting facilities in four countries, Howmet meets the needs of our customers in a variety of industries.
		Howmet's nine superalloy casting facilities are located in four countries.
	www.alcoa.com /global/en/products/product.asp?prod_id=34 (115 words)

	Mechanical Testing of Superalloy Lattice Block Structures
		The first mechanical tests of superalloy lattice block structures produced promising results for this exciting new lightweight material system.
		The testing was performed in-house at NASA Glenn Research Center's Structural Benchmark Test Facility, where small subelement-sized compression and beam specimens were loaded to observe elastic and plastic behavior, component strength levels, and fatigue resistance for hundreds of thousands of load cycles.
		After a series of casting iterations, the nickel-based superalloy Inconel 718 (IN 718, Inco Alloys International, Inc., Huntington, WV) was successfully cast into lattice block panels; this combination offers light weight combined with high strength, high stiffness, and elevated-temperature durability.
	www.grc.nasa.gov /WWW/RT2001/5000/5920krause2.html (462 words)

	Initiation of Antidumping Duty Investigation on Imports of Superalloy Degassed Chromium from Japan - March 25, 2005
		On March 25, the Department of Commerce announced its decision to initiate an antidumping duty investigation on imports of superalloy degassed chromium from Japan.
		Next Steps: On or about April 18, the U.S. International Trade Commission (ITC) is scheduled to issue its preliminary determination as to whether the domestic industry is materially injured, or is threatened with material injury, as a result of imports of subject merchandise from Japan.
		Superalloy degassed chromium generally is sold in briquetted form, as “pellets” or “compacts,” which typically are 1 ½ inches x 1 inch x 1 inch or smaller in size and have a smooth surface.
	www.ita.doc.gov /media/FactSheet/0305/chromium_032505.html (511 words)

	Superalloy
		Materials such as superalloys, intermetallics and ceramic matrix composites are considered, as is the use of thermal barrier coatings.
		Cobalt is a brittle, hard metal white in appearance resembling nickel but with a bluish tinge instead of the yellow of nickel.
		Cobalt is also used in superalloys, glass to metal seals, electroplating and cutting tools.
	www.azom.com /SearchResults.asp?MaterialKeyWord=Superalloy (462 words)

	Analysis of Proposed Consent Order to Aid Public Comment
		Aerospace investment cast structural components are components that are used primarily in aerospace jet engine and aerospace airframe applications and are manufactured using a variety of metal alloys, including titanium, stainless steel, and nickel-based superalloy.
		PCC and Wyman-Gordon are two of the world's leading suppliers of titanium, stainless steel, and nickel-based superalloy aerospace investment cast structural components.
		It is unlikely that the competition eliminated by the proposed acquisition would have been replaced by new entrants into the relevant markets within two years due to the substantial barriers to entry into the markets at issue.
	www.ftc.gov /os/1999/11/pccana.htm (1169 words)

	EPRI: Assessment of the Laser Welding Process for Superalloy Gas Turbine Blade Welding
		Significant advancements in superalloy blade repair must include the development of improved welding filler metals to address repairs over more of the airfoil than just the airfoil tip.
		To extend the current limits of repair welding of IN738 superalloy gas turbine blades beyond the upper tip region to more highly stressed regions of the airfoil.
		The efficiency of modern combined cycle power plants and the deregulation of the utility industry have spurred a dramatic increase in gas turbine installations in recent years.
	www.epri.com /OrderableitemDesc.asp?product_id=TR-113748 (932 words)

	Design of a Creep-Resistant Nickel-base Superalloy for Power Plant Applications (Site not responding. Last check: 2007-10-13)
		In Part 1, Gaussian processes are used to model the tensile and creep rupture properties of superalloys as a function of their composition and processing parameters, making use of large databases on existing alloys.
		In Part 1 Gaussian processes were used to model the mechanical properties of superalloys, and have been used as a basis for the design of a new Ni - Cr - W - AI- Ti - Fe - Si - C - B superalloy with desirable properties.
		An affordable, forgeable, weldable, creep-resistant and corrosion-resistant nickel-base superalloy was designed using modern computing approaches (Gaussian processes modelling of mechanical properties, thermodynamical simulation).
	www.msm.cam.ac.uk /phase-trans/2003/ft750dc.html (698 words)

	ATOM-PROBE MICROANALYSIS OF A NICKEL-BASE SINGLE-CRYSTAL SUPERALLOY (Site not responding. Last check: 2007-10-13)
		The atomic structure of a high strength single crystal nickel- base superalloy TMS-63 (Ni-7.8at%Cr-4.6at%Mo-12.8at%Al- 2.8at%Ta) has been analysed using a field ion microscope/atom- probe equipped with a reflectron time-of-flight mass spectrometer.
		The equilibrium partitioning coefficient defined as the ratio of the solute concentration in the gamma' phase to that in the gamma phase has been found to be 0.22, 0.27, 2.3 and 3.3 for Cr, Mo, Al and Ta, respectively, in good agreement with our theoretical estimates.
		On-line calculations of the properties of nickel based superalloys as a function of chemical composition and heat treatment.
	www.msm.cam.ac.uk /phase-trans/abstracts/superalloy.ishida.html (193 words)

	[No title]
		BIPOD FITTING COVERS (silver) have been made of superalloy S66286, containing 24-27% nickel, to withstand the high temperature created by aerodynamic heating.
		When the U.S. space shuttle Discovery flies again, in May 2005, the area where insulating foam broke away, causing fatal damage to Columbia, will be redesigned to include high-temperature superalloy S66286 (alloy 286) end covers.
		The affected area is in the forward bipod area, where struts join the giant external fuel tank to the shuttle.
	www.nickelinstitute.org /index.cfm/ci_id/13733.htm (293 words)

	Superalloy Powders from READE (Site not responding. Last check: 2007-10-13)
		There are three types of superalloys- Fe-Ni based, Ni based and Co based.
		Ni based superalloys is the most important class.
		The Co based superalloys are invariably strengthened by a combination of carbides and solid-solution hardeners.
	www.reade.com /Products/Alloys/superalloy.html (177 words)

	Temperature Dependent Fracture Toughness of a Single Crystal Nickel Superalloy
		An important application of nickel base superalloys is in the industrial gas turbine (IGT) industry, where the high temperature capabilities of these alloys are exploited.
		However, studies on the effects of temperature on fracture toughness have largely been absent in both past and present literature.
		Therefore, the goal of this research is to characterize the fracture toughness properties of a second-generation single crystal nickel superalloy at elevated temperatures.
	journalsip.astm.org /JOURNALS/JAI/PAGES/500.htm (324 words)

	Platinum today: Manufacturers urged to pilot platinum superalloy
		A new platinum-based superalloy could potentially revolutionise the use of metals in the aviation industry, with work underway to get manufacturers to use the material.
		Devised by scientists with the Platinum Development Initiative in South Africa and developd in conjunction with Mintek researchers, the superalloy works at higher temperatures than traditional nickel-based composites, offering a more effective and reliable operation.
		First reported in May, the superalloy has been tested by the Platinum Development Initiative (PDI), with a view ultimately to commercial use.
	www.platinum.matthey.com /media_room/1128600003.html (288 words)

	Characterization and Modeling of Microstructure Development in Nickel-Base Superalloy Welds (Site not responding. Last check: 2007-10-13)
		Welding plays an important role in economical reuse and reclamation of used and failed directionally solidified and single-crystal Ni-base superalloy blades.
		Single crystal PWA-1480 alloys can be welded without cracks by preheating to 500°C. Coarse eutectic g´ precipitates were present along the dendritic boundaries of PWA-1480 electron beam welds.
		Diffusion controlled growth calculations predict the kinetics of g´ formation while cooling at 500°C/s from 1300°C. Simulated concentration profiles are compared with the measured APFIM concentration profiles.
	mjndeweb.ms.ornl.gov /Babu/Talk/ASM99/index.htm (288 words)

Try your search on: Qwika (all wikis)