Abstract: A metallic coating is provided. The nickel based metallic coating includes tantalum, cobalt, chromium, and aluminum. The nickel based metallic coating does not include silicon and/or hafnium and/or zirconium. A tantalum addition in nickel based coating stabilized the phases gamma/gamma1 at high temperatures leading to a reduction of local stresses.

Abstract: A known protective layer has a high Cr content and additionally containing a silicon, forms brittle phases, which become additionally embrittled under the influence of carbon during use. A proposed protective layer has the following composition: 24% to 26% cobalt, 10.5% to 11.5% aluminum, 0.1% to 0.7% yttrium and/or at least one equivalent metal from the group of scandium and the rare earth elements, 12% to 15% chromium, optionally 0.1% to 3% tantalum, optionally 0.05% to 0.5% silicon, with the remainder being nickel.

Abstract: A rhenium-free nickel-base superalloy for single crystal casting that exhibits excellent high temperature creep resistance, while also exhibiting other desirable properties for such alloys, comprises 5.60% to 5.85% aluminum, 9.4% to 9.9% cobalt, 5.0% to 6.0% chromium, 0.08% 0.35% hafnium, 0.50% to 0.70% molybdenum, 8.0% to 9.0% tantalum, 0.60% to 0.90% titanium, 8.5% to 9.8% tungsten, the balance comprising nickel and minor amounts of incidental elements.

Abstract: In an exemplary embodiment, a high temperature oxidation and hot corrosion resistant MCrAlX alloy is disclosed, wherein M comprises cobalt and X comprises, by weight of the alloy, from about 0.001 percent to less than 0.19 percent yttrium. In these alloys, X may also optionally include silicon, including, by weight of the alloy, up to about 1.5 percent. In another exemplary embodiment, a coated article is disclosed. The coated article includes a substrate having a surface. The article also includes a bond coat disposed on the surface. The bond coat comprises a high temperature oxidation and hot corrosion resistant MCrAlX alloy, wherein M comprises cobalt and X comprises, by weight of the alloy, from about 0.001 percent to less than 0.19 percent yttrium.

Abstract: Nickel-based alloy consisting of (in % by mass) Si 0.8-2.0%, Al 0.001-0.1%, Fe 0.01-0.2%, C 0.001-0.10%, N 0.0005-0.10%, Mg 0.0001-0.08%, O 0.0001-0.010%, Mn max. 0.10%, Cr max. 0.10%, Cu max. 0.50%, S max. 0.008%, balance Ni and the usual production-related impurities.

Abstract: A nickel-base alloy having the following composition (in weight percent unless otherwise stated): Cr 13/-17.5; Co 2.5-5.6; Fe 8.0-9.3; Si 0-0.6; Mn 0-0.95; Mo 0.5-2.3; W 2.7-3.0; Al 2.2-3.5; Nb 2.7-7.2; Ti 0-0.85; Ta 0-3.25; Hf 0.0-0.5; C 0.01-0.05; B 0.02-0.04; Zr 0.04-0.06; Mg 0.015-0.025; S<50 ppm; P<50 ppm; the balance being Ni and incidental impurities. The alloy has an improved combination of properties (principally resistance to surface environmental damage and dwell fatigue crack growth) compared with known alloys, and is intended to operate for prolonged periods of time above 700° C., and up to peak temperatures of 800° C.

Abstract: A nickel-base alloy comprising: 12-40 wt % chromium; up to 13 wt % copper; up to 8% aluminium; balance nickel and incidental impurities is disclosed. Such alloys show an improved carbon corrosion resistance at high temperatures. Such an alloy could therefore be utilised in chemical processing or conveying apparatus, such as steam reforming, syngas production, fertilizer production, ammonia production or coal gasification, or more generally where gases with high carbon potentials are present. The alloy may further comprise one or more rare earth elements, up to a combined total of 1 wt %.

Abstract: Known protective layers having a high chromium content, as well as silicon, have brittle phases that become additionally brittle under the influence of carbon during use. A protective layer including the composition of 18% to 20% cobalt, 6% to 8% aluminum, 0.5% to 0.7% yttrium, 22% to 26% chromium, and the remainder nickel is provided.

Abstract: An alloy including: about 10 at % to about 30 at % of a Pt-group metal; less than about 23 at % Al; about 0.5 at % to about 2 at % of at least one reactive element selected from Hf, Y, La, Ce and Zr, and combinations thereof; a superalloy substrate constituent selected from the group consisting of Cr, Co, Mo, Ta, Re and combinations thereof; and Ni; wherein the Pt-group metal, Al, the reactive element and the superalloy substrate constituent are present in the alloy in a concentration to the extent that the alloy has a solely ??-Ni3Al phase constitution.

Abstract: An alloy composition includes a blend of a first alloy and a second, different alloy. The blend has a combined composition including about 17.2 wt %-24.25 wt % of chromium, about 6 wt %-10.51 wt % of aluminum, about 3 wt %-23 wt % of cobalt, about 1.5 wt %-3.6 wt % of silicon, about 0.1 wt %-0.175 wt % of boron, up to about 0.163 wt % of hafnium, about 0.075 wt %-0.7 wt % of yttrium, and a balance of nickel.

Abstract: A method of coating a substrate with cryo-milled, nano-grained particles includes forming a face-centered-cubic gamma matrix comprising nickel, cobalt, chromium, tungsten and molybdenum, adding a dispersion strengthening material to the gamma matrix to form a first mixture, cryo-milling the first mixture to form a second mixture to form a nano-grained structure, and cold spraying the second mixture onto a substrate to form a coating having a nano-grained structure.

Abstract: An alloy designed for use in gas turbine engines which has high strength and a low coefficient of thermal expansion is disclosed. The alloy may contain in weight percent 7% to 9% chromium, 21% to 24% molybdenum, greater than 5% tungsten, up to 3% iron, with a balance being nickel and impurities. The alloy must further satisfy the following compositional relationship: 31.95<R<33.45, where the R value is defined by the equation: R=2.66Al+0.19Co+0.84Cr?0.16Cu+0.39Fe+0.60Mn+Mo+0.69Nb+2.16Si+0.47Ta+1.36Ti+1.07V+0.40W The alloy has better hardness after being age-hardened at 1400° F. (760° C.) if tungsten is present from greater than 5% up to 10% and a preferred density if the alloy contains greater than 5% up to 7% tungsten.

Abstract: A nickel-base y/y? superalloy with a blend of at most moderate cost, high oxidation resistance, high hot corrosion resistance, moderate strengthening, adequate allow stability and comparatively good weldability is provided. The alloy includes up to 20 wt % of the sum of Co and Fe, between 17 and 21 wt % Cr, between 0.5 and 3 wt % of the sum of Mo and W, at most 2 wt % Mo, between 4.8 and 6 wt % Al, between 1.5 and 5 wt % Ta, between 0.01 and 0.2 wt % of the sum of C and B, between 0.01 and 0.2 wt % Zr between 0.05 and 1.5 wt % Hf, between 0.05 and 1.0 wtz % Si, and between 0.01 and 0.5 wt % of the sum of rare earths such as Sc, Y, the actinides and the lanthanides, such that at least two of these rare earths are present in the alloy, and no more than 0.3 wt % of any of these rare earths.

Abstract: A nickel-based coating or alloy is provided. The coating includes tantalum preferably without rhenium. The coating or alloy has stabilized the formation of phases ?/?? at high temperatures leading to a reduction of local stresses. A component is also provided. The substrate of the component includes a nickel-based or cobalt-based superalloy.

Abstract: A method for repairing a component of a gas turbine and a solder alloy are disclosed. In an embodiment, the method includes applying the solder alloy to the component in an area of the component having a punctiform damage or a linear imperfection, where the solder alloy is a mixture of a NiCoCrAlY alloy and a Ni-based solder. A molded repair part made of the solder alloy is applied to the component in an area of the component having a planar defect. The component is heat treated to solder the molded repair part on the component and to solder the solder alloy applied to the component in the area of the component having the punctiform damage or the linear imperfection. The component is cooled after the heat treating and, following the cooling, the component is further heat treated.

Abstract: A nickel-based coating or alloy is provided. The coating includes tantalum preferably without rhenium. The coating or alloy has stabilized the formation of phases ?/?? at high temperatures leading to a reduction of local stresses. A component is also provided. The substrate of the component includes a nickel-based or cobalt-based superalloy.

Abstract: An austenitic stainless steel welded joint, whose base metal and weld metal each comprises, by mass percent, C: not more than 0.3%, Si: not more than 2%, Mn: 0.01 to 3.0%, P: more than 0.04% to not more than 0.3%, S: not more than 0.03%, Cr: 12 to 30%, Ni: 6 to 55%, rare earth metal(s): more than 0.2% to not more than 0.6%, sol. Al: 0.001 to 3% and N: not more than 0.3%, with the balance being Fe and impurities, and satisfies the formula of (Cr+1.5×Si+2×P)/(Ni+0.31×Mn+22×C+14.2×N+5×P)<1.388, in spite of having a high P content and showing the fully austenitic solidification, has excellent resistance to the weld solidification cracking. Therefore, the said austenitic stainless steel welded joint can be widely used in such fields where a welding fabrication is required. Each element symbol in the above formula represents the content by mass percent of the element concerned.

Abstract: A single crystal casting having substantially improved high-temperature oxidation resistance, hot corrosion (sulfidation) resistance, and resistance to creep under high temperature and high stress is characterized by an as-cast composition comprising a maximum sulfur content of 0.5 ppm by weight, a maximum phosphorus content of 20 ppm by weight, a maximum nitrogen content of 3 ppm by weight, a maximum oxygen content of 3 ppm by weight, and a combined yttrium and lanthanum content of 5-80 pm by weight. It has been discovered that careful control of the deleterious impurities, particularly sulfur, phosphorus, nitrogen and oxygen, in combination with a carefully controlled addition of yttrium and/or lanthanum provides unexpected improvements in corrosion and oxidation resistance, while also enhancing high-temperature, high-stress resistance to creep, without any detrimental effects on other mechanical properties, processing or producability, particularly castability.

Abstract: A Ni-based single crystal superalloy which has the following composition: Co: 0.0 wt % or more to 15.0 wt % or less, Cr: 4.1 to 8.0 wt %, Mo: 2.1 to 4.5 wt %, W: 0.0 to 3.9 wt %, Ta: 4.0 to 10.0 wt %, Al: 4.5 to 6.5 wt %, Ti: 0.0 to 1.0 wt %, Hf: 0.00 to 0.5 wt %, Nb: 0.0 to 3.0 wt %, Re: 8.1 to 9.9 wt % and Ru: 0.5 to 6.5 wt % with the remainder including Ni and unavoidable impurities. As a result, the Ni-based single crystal superalloy which includes more than 8 wt % of Re in the composition ratio and has excellent specific creep strength and the turbine blade incorporating the Ni-based single crystal superalloy may be made.

Abstract: A hydrogen absorbing alloy represented by the formula Ln1?xMgxNiy?aAla (where Ln is at least one element selected from rare earth elements, 0.05?x<0.20, 2.8?y?3.9 and 0.10?a?0.25) which is used for an alkaline storage battery.

Abstract: The Ni-based single crystal alloy disclosed here is a single crystal and has a chemical composition containing, as % by mass, Co: 8 to 12%, Cr: 5 to 7.5%, Mo: 0.2 to 1.2%, W: 5 to 7%, Al: 5 to 6.5%, Ta: 8 to 12%. Hf: 0.01 to 0.2%, Re: 2 to 4%, Si: 0.005 to 0.1%, with the balance of Ni and inevitable impurities.

Abstract: A nickel chromium alloy with 0.4 to 0.6% carbon, 28 to 33% chromium, 15 to 25% iron, 2 to 6% aluminum, up to 2% silicon, up to 2% manganese, up to 1.5% niobium, up to 1.5% tantalum, up to 1.0% tungsten, up to 1.0% titanium, up to 1.0% zirconium, up to 0.5% yttrium, up to 1.0% cerium, up to 0.5% molybdenum, up to 0.1% nitrogen, remainder nickel, has a high oxidation and carburization stability, long-term rupture strength and creep resistance. This alloy is particularly suited as a material for components of petrochemical plants and for parts, for example tube coils of cracker and reformer furnaces, pre-heaters, and reformer tubes, as well as for use for parts of iron ore direct reduction plants.

Abstract: A welding additive is provided. A component including a welding additive is also provided. The welding additive improves the weldability of a few nickel-based superalloys and includes the following contents (in wt %): 10.0%-20.0% chromium, 5.0%-15.0% cobalt, 0.0%-10.0% molybdenum, 0.5-3.5% tantalum, 0.0%-5.0% titanium, 1.5%-5.0% aluminum, 0.3%-0.6% boron, remainder nickel.

Abstract: A metallic coating for use in a high temperature application is created from a nickel base alloy containing from 5.0 to 10.5 wt % aluminum, from 4.0 to 15 wt % chromium, from 2.0 to 8.0 wt % tungsten, from 3.0 to 10 wt % tantalum, and the balance nickel. The metallic coating has particular utility in protecting single crystal superalloys used in high temperature applications such as turbine engine components.

Abstract: Nickel based alloy intended for use at high temperatures wherein it comprises in percent by weight (wt-%) C 0.05-0.2 Si max 1.5 Mn max 0.5 Cr 15-20 Al 4-6 Fe 15-25 Co max 10 N 0.03-0.15 O max 0.5 one or more elements selected from the group consisting of Ta, Zr, Hf, Ti and Nb 0.25-2.2 one or more elements selected from the group consisting of REM max 0.5 balance Ni and normally occurring impurities.

Abstract: There is described a two-Level Layer System with Pyrochlore Phase and Oxides. Besides a good thermal insulation property, thermal insulation layer systems must also have a long lifetime of the thermal insulation layer. The layer system has a layer sequence of a metallic bonding layer, an inner ceramic layer and an outer ceramic layer, which are specially matched to one another.

Abstract: A nickel base gamma prime strengthened superalloy with a unique blend of adequate hot corrosion resistance, high oxidation resistance, high coating compatibility, adequate phase stability, adequate creep resistance and low density is disclosed. The composition comprises: Up to 20 wt % Co, between 12 and 14 wt % Cr, between 1 and 2 wt % Mo, between 1.4 and 2.8 wt % W, between 5.1 and 5.9 wt % Al, between 1.1 and 1.6 wt % Ti, between 3 and 7 wt % Ta, between 0.01 and 0.3 wt % of C+Zr+B, between 0.05 and 1 wt % Hf, between 0.05 and 1 wt % Si, and between 0.01 and 0.2 wt % of the sum of rare earths such as Sc, Y, the actinides and the lanthanides. The composition is intended for use in hot components such as gas turbine blades, and said components are preferably produced by clean casting.

Abstract: A brazing composition for the brazing of superalloys including a base material with at least one initial phase is provided. The initial phase has a solidus temperature that is below the solidus temperature of the base material and, above a certain temperature, forms with the base material and/or with at least one further initial phase at least one resultant phase, the solidus temperature of which is higher that the solidus temperature of the initial phases. Heat treatment takes place in two stages, wherein the temperature of the second heat treatment is preferably 800-1200° C. The brazing composition may likewise be of the type MCrAlX, and the power particles of the initial phase may be in the form of nanoparticles.

Abstract: Disclosed is a welding material for a Ni-based alloy, comprising components expressed as follows: C?0.05 mass %; 8 mass %?Cr?25 mass %; Fe?4.0 mass %; W?15 mass %; 5 mass %?Mo+½(W+Re)?20 mass %; Co?20 mass %; 0.01 mass %?Al<2.0 mass %; 0.01 mass %?Ti<2.0 mass %; Al+½Ti?3.0 mass %; Nb+½Ta?1.5 mass %; B?0.007 mass %; Zr?0.04 mass %; 0.01 mass %?Si?0.5 mass %; Mn?1.0 mass %; P?0.010 mass %; S?0.002 mass %; O?0.005 mass %; and Ni and unavoidable impurities which constitute the balance.

Abstract: A nickel base gamma prime strengthened superalloy with a unique blend of high hot corrosion resistance, high oxidation resistance, high coating compatibility, good weldability, high phase stability and at least moderate creep resistance is disclosed. The composite includes: Up to 20 wt % Co, between 17 and 21 wt % Cr, between 2 and 5 wt % of Mo+W+Re, at most 2 wt % Mo, between 4 and 4.7 wt % AL, between 3 and 7 wt % Ta, 0.01 and 0.2 wt % Ta, between 0.01 and 0.3 wt % of C+Zr+B between 0.05 and 1 wt % Hf, between 0.05 and 1 wt % Si, and between 0.01 and 0.2 wt % of the sum of rare earths such as SC, Y, the actinides and the lanthanides. The composition is intended for use as base alloy for moderately stressed hot components and as filler alloy for cladding and weld repair in moderately stressed parts of hot components.

Abstract: Nickel-based superalloys, turbine blades, and methods of improving or repairing turbine engine components are included. A nickel-based superalloy includes, by weight, about 5% to about 12% cobalt, about 3% to about 10% chromium, about 5.5% to about 6.3% aluminum, about 5% to about 10% tantalum, about 3% to about 10% rhenium, about 2% to about 5% of one or more of elements selected from a group consisting of platinum, ruthenium, palladium, and iridium, about 0.1% to about 1.0% hafnium, about 0.01% to about 0.4% yttrium, about 0.01% to about 0.15% silicon, and a balance of nickel.

Abstract: A MCrAlY alloy, methods to produce a MCrAlY layer and a honeycomb seal are provided. The MCrAlY alloy includes chromium, aluminum, yttrium and iron and optionally titanium, hafnium or silicon. The honeycomb seal includes a substrate, honeycomb cells and a protective coating on side walls of the honeycomb cells or a diffusion area inside side walls of the honeycomb cells, the protective coating or the diffusion area including the MCrAlY alloy.

Abstract: A nickel-base superalloy composition including (measured in % by weight) from about 6.8 to about 7.5% aluminum, from about 4 to about 8% tantalum, from about 4 to about 10% chromium, from about 2 to about 7% tungsten, from 0 to about 6% rhenium, from 0 to about 5% cobalt, from 0 to about 0.2% silicon, optionally, from about 0.15 to about 0.7% hafnium, from 0 to about 0.5% titanium, from 0 to about 4% molybdenum, from 0 to about 0.005% boron, from 0 to about 0.06% carbon, from 0 to about 0.03% of a rare earth addition selected from the group consisting of yttrium, lanthanum, cesium, and combinations thereof, balance nickel and incidental impurities. The nickel-base superalloy composition may be used in single-crystal or directionally solidified superalloy articles such as high pressure turbine blades for a gas turbine engine.

Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep and oxidation resistance substantially equivalent to or better than rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 ?m, if need be, so that further improvements in mechanical properties in the articles can be seen.

Abstract: A nickel-based protective layer which has a high percentage in chromium and optionally silicon and/or yttrium is provided. The nickel-based protective layer is used as low-temperature corrosion protective layer of nickel-or cobalt-based alloys. The alloy of which the layer is made and a layer system are also provided. The alloy may also include a refractory element such as hafnium or scandium.

Abstract: A subject for the invention is to diminish the occurrence of streak-type segregation in producing a material comprising a Ni-based superalloy. The invention relates to a Ni-based superalloy having excellent unsusceptibility to segregation, characterized by comprising: 0.005 to 0.15 mass % of C; 8 to 22 mass % of Cr; 5 to 30 mass % of Co; equal to or greater than 1 and less than 9 mass % of Mo; 5 to 21 mass % of W; 0.1 to 2.0 mass % of Al; 0.3 to 2.5 mass % of Ti; up to 0.015 mass % of B; and up to 0.01 mass % of Mg, with the remainder comprising Ni and unavoidable impurities.

Abstract: A metallic coating for protecting a substrate from high temperature oxidation and hot corrosion environments comprising about 2.5 to about 13.5 wt. % cobalt, about 12 to about 27 wt. % chromium, about 5 to about 7 wt. % aluminum, about 0.0 to about 1.0 wt. % yttrium, about 0.0 to about 1.0 wt. % hafnium, about 1.0 to about 3.0 wt. % silicon, about 0.0 to about 4.5 wt. % tantalum, about 0.0 to about 6.5 wt. % tungsten, about 0.0 to about 2.0 wt. % rhenium, about 0.0 to about 1.0 wt. % molybdenum and the balance nickel.

Abstract: Nickel-based alloys and turbine components are provided. In an embodiment, by way of example only, a nickel-based alloy includes, by weight, about 29.5 percent to about 31.5 percent aluminum, about 0.20 percent to about 0.60 percent hafnium, about 0.08 percent to about 0.015 percent yttrium, and a balance of nickel. In another embodiment, by way of example only, a nickel-based alloy includes, by weight, about 9.7 percent to about 10.3 percent of cobalt, about 15.5 percent to about 16.5 percent of chromium, about 6.6 percent to about 7.2 percent of aluminum, about 5.7 percent to about 6.3 percent of tantalum, about 2.7 percent to about 3.3 percent of tungsten, about 1.8 percent to about 2.3 percent of rhenium, about 0.20 percent to about 1.2 percent of hafnium, about 0.20 percent to about 0.60 percent of silicon, and a balance of nickel.

Abstract: An article of manufacture for reducing susceptibility of a metal pipe to metal dusting degradation. The article includes a multi-layer tubing having an alloy layer and a copper layer. The alloy layer can include a Ni based, an Al based and an Fe based alloy layer. In addition, layers of chrome oxide, spinel and aluminum oxide can be used.

Abstract: A nickel-base superalloy composition including (measured in % by weight) from about 6.5 to about 7.5% aluminum, from about 4 to about 8% tantalum, from about 3 to about 10% chromium, from about 2 to about 7% tungsten, from 0 to about 4% molybdenum, from 0 to about 6% rhenium, from 0 to less than about 0.001% niobium, from 0 to about 5% cobalt, from 0 to about 0.2% silicon, from 0 to about 0.06% carbon, optionally, from 0 to about 0.5% titanium, from 0 to about 0.005% boron, from about 0.15 to about 0.7% hafnium, from 0 to about 0.03% of a rare earth addition selected from the group consisting of yttrium, lanthanum, cesium, and combinations thereof, balance nickel and incidental impurities. The nickel-base superalloy composition may be used in single-crystal or directionally solidified superalloy articles such as high pressure turbine blades for a gas turbine engine.

Abstract: A nickel-molybdenum-chromium alloy, capable of withstanding both strong oxidizing and strong reducing 2.5% hydrochloric acid solutions at 121° C., contains 20.0 to 23.5 wt. % molybdenum and 13.0 to 16.5 wt. % chromium with the balance being nickel plus impurities and residuals of elements used for control of oxygen and sulfur.

Abstract: A method of coating a substrate with cryo-milled, nano-grained particles includes forming a face-centered-cubic gamma matrix comprising nickel, cobalt, chromium, tungsten and molybdenum, adding a dispersion strengthening material to the gamma matrix to form a first mixture, cryo-milling the first mixture to form a second mixture to form a nano-grained structure, and cold spraying the second mixture onto a substrate to form a coating having a nano-grained structure.

Abstract: The invention relates to an iron-nickel-chromium-silicon alloy comprising (in wt.-%) 19 to 34% or 42 to 87% nickel, 12 to 26% chromium, 0.75 to 2.5% silicon, and additives of 0.05% to 1% Al, 0.01 to 1% Mn, 0.01 to 0.26% lanthanum, 0.0005 to 0.05% magnesium, 0.04 to 0.14% carbon, 0.02 to 0.14% nitrogen, and further comprising 0.0005 to 0.07% Ca, 0.002 to 0.020% P, a maximum of 0.01% sulfur, a maximum of 0.

Abstract: An austenitic heat resistant alloy, which comprises, by mass percent, C?0.15%, Si?2%, Mn?3%, Ni: 40 to 80%, Cr: 15 to 40%, W and Mo: 1 to 15% in total content, Ti?3%, Al?3%, N?0.03%, O?0.03%, with the balance being Fe and impurities, and among the impurities P?0.04%, S?0.03%, Sn?0.1%, As?0.01%, Zn?0.01%, Pb?0.01% and Sb?0.01%, and satisfies the conditions [P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}?0.050], [0.2?P2=Ti+2Al?7.5?10×P1], [P2?9.0?100×O] and [N?0.002×P2+0.019] can prevent both the liquation crack in the HAZ and the brittle crack in the HAZ and also can prevent defects due to welding fabricability, which occur during welding fabrication, and moreover has excellent creep strength at high temperatures. Therefore, the alloy can be used suitably as a material for constructing high temperature machines and equipment, such as power generating boilers, plants for the chemical industry and so on.

Abstract: A cutter is composed of a Ni—Cr alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.

Abstract: NiCoCrAl layers used as anticorrosive layers characterized by additional corrosion stability enhancing agents that substantially improve the anticorrosive properties are provided. Corrosion stability is not only determined by the composition and the percentage of the main alloy elements of nickel, cobalt, chromium and aluminium, but also by the addition of corrosion stability enhancing agents, such yttrium, cerium, tantalum, niobium, silicon, titanium, zirconium, and hafnium.

Abstract: A first embodiment of a nickel based alloy consists essentially of from 3.0 to 5.2 wt % chromium, from 1.5 to 3.0 wt % molybdenum, from 6.0 to 12.5 wt % tungsten, from 5.0 to 11 wt % tantalum, from 5.5 to 6.5 wt % aluminum, from 11 to 14 wt % cobalt, from 0.001 to 1.75 wt % rhenium, from 0.2 to 0.6 wt % hafnium, up to 0.05 wt % yttrium, up to 3.0 wt % ruthenium, and the balance nickel. Another embodiment of a nickel based alloy consists essentially of from 1.0 to 3.0 wt % chromium, up to 2.5 wt % molybdenum, from 11 to 16 wt % tungsten, from 4.0 to 8.0 tantalum, from 5.7 to 6.5 wt % aluminum, from 11 to 15 wt % cobalt, from 2.0 to 4.0 wt % rhenium, from 0.2 to 0.6 wt % hafnium, up to 0.05 wt % yttrium, up to 3.0 wt % ruthenium, and the balance nickel.

Abstract: A fuel cell catalyst comprising platinum, chromium, and copper, nickel or a combination thereof. In one or more embodiments, the concentration of platinum is less than 50 atomic percent, and/or the concentration of chromium is less than 30 atomic percent, and/or the concentration of copper, nickel, or a combination thereof is at least 35 atomic percent.

Abstract: An alloy including about 16 at % to about 23 at % Al; about 3 at % to about 10 at % Cr; up to about 5 at % Si; up to about 0.3 at % of at least two reactive elements selected from Y, Hf, Zr, La, and Ce; and Ni. The alloy has a volume fraction of ??-Ni3Al phase greater than about 75%.

Abstract: Nickel-based alloy, consisting of (in % by mass) Al 1.2-<2.0% Si 1.2-<1.8% C 0.001-0.1% S 0.001-0.1% Cr 0.03-0.1% Mn 0.03-0.1% Cu max. 0.1% Fe 0.02-0.2% Mg 0.005-0.06% Pb max. 0.005% Y 0.05-0.15% and Hf 0.05-0.10% or Y 0.05-0.15% and La 0.05-0.10% or Y 0.05-0.15% and Hf 0.05-0.10% and La 0.05-0.10% Ni remainder together with manufacturing-related impurities.