Abstract: A corrosion-resistant nickel alloy, a preparation method thereof and, and a use thereof are provided. The alloy includes the following components in percentage by mass: 4.68-5.35% of B, 5.69-6.41% of W, 27.68-28.39% of Cr, 12.65-13.42% of Al, and the balance of Ni and inevitable impurities. The alloy disclosed by the present invention is a Ni—W—B ternary alloy with main components of Ni, W and B, wherein the three elements have strong high-temperature corrosion resistance at a temperature of about 600° C., and have the potential of solid solution hardening and precipitate formation because all belong to solid solution forming elements, so that a creep strength of a nickel alloy matrix is improved. Meanwhile, Al and Cr are further added in the alloy formula, so that Al2O3 and Cr2O3 oxide layers can be formed, which play a role as a physical diffusion barrier against chlorine gas and other corrosive gases.

Abstract: This document describes a process/strategy for age hardening nickel based alloys to create desirable properties with reduced energy expenditure. The inventive process introduces isolated atom nucleation sites to accelerate the nucleation rate by approximately 36 times, thereby permitting age hardening to occur in significantly less time and with significantly less energy expenditure.

Abstract: Some embodiments include a reinforced face of a club head. Other embodiments for related reinforced faces of club heads and related methods are also disclosed.

Abstract: A roll for winding equipment in a hot rolling factory is obtained by forming a base build-up layer on the surface of the body of the roll and forming on the base build-up layer a self-fluxing alloy thermal spraying layer, in which carbide particles are dispersed. The base build-up layer has a Shore hardness of 60 or higher and includes an iron-based build-up layer that contains, in terms of mass %, 0.4-1.0% of C, 2.0% or less of Si, 3.0% or less of Mn, 1.0-15.0% of Cr and 0.5-5.0% of Nb.

Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight, 18.0 to 30.0% cobalt, 11.4 to 16.0% chromium, up to 6.0% tantalum, 2.5 to 3.5% aluminum, 2.5 to 4.0% titanium, 5.5 to 7.5% molybdenum, up to 2.0% niobium, up to 2.0% hafnium, 0.04 to 0.20% carbon, 0.01 to 0.05% boron, 0.03 to 0.09% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.71 to 1.60.

Abstract: The performance of an ABx type metal hydride alloy is improved by adding an element to the alloy which element is operative to enhance the surface area morphology of the alloy. The alloy may include surface regions of differing morphologies.

Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.

Abstract: A metallic coating or alloy is provided. The metallic coating includes iron, cobalt, chromium, and aluminum. Tantalum may also be included. A new addition in nickel based coating with stabilized gamma/gamma? phases at high temperatures lead to a reduction of local stresses. A component including the metallic coating or alloy is also provided.

Abstract: Provided are precipitation hardened high strength nickel based alloy welds that yield improved properties and performance in joining high strength metals. The advantageous weldments include two or more segments of ferrous or non-ferrous components, and fusion welds, friction stir welds, electron beam welds, laser beam welds, or a combination thereof bonding adjacent segments of the components together, wherein the welds comprise a precipitation hardened nickel based alloy weld metal composition including greater than or equal to 1.4 wt % of combined aluminum and titanium based on the total weight of the nickel based alloy weld metal composition. Also provided are methods for forming the welds from the nickel based alloy weld compositions, wherein the precipitation hardening occurs in the as-welded condition. The nickel based welds do not require a separate heat treatment step after welding to produce advantageous strength properties.

Abstract: An austenitic heat resistant alloy consisting of, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 0.03 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 4%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 3% or less, Ti: 3% or less, and Nb: 3% or less, the balance being Fe and impurities. The contents of P and S in the impurities being P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1?4×Al+2×Ti+Nb?12 and P+0.2×Cr×B?0.035, is excellent in weld crack resistance and toughness of HAZ, and is further excellent in creep strength at high temperatures.

Abstract: Medical devices and methods for making and using the same are disclosed. An example medical device may include a guidewire. The guidewire may include an elongate shaft. The shaft may include a porous metal alloy. The porous metal alloy may be arranged so that the porous metal alloy has a first pore distribution along a first portion of the shaft and a second pore distribution different from the first pore distribution along a second portion of the shaft.

Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.

Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight, 18.0 to 30.0% cobalt, 11.4 to 16.0% chromium, up to 6.0% tantalum, 2.5 to 3.5% aluminum, 2.5 to 4.0% titanium, 5.5 to 7.5% molybdenum, up to 2.0% niobium, up to 2.0% hafnium, 0.04 to 0.20% carbon, 0.01 to 0.05% boron, 0.03 to 0.09% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.71 to 1.60.

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: Burn-resistant metal alloys that also have a high tensile strength are described. The alloys generally include about 55 to about 75 weight percent nickel, about 12 to about 17 weight percent cobalt, about 4 to about 16 weight percent chromium, about 1 to about 4 weight percent aluminum, and about 1 to about 4 weight percent titanium.

Abstract: Disclosed is a structural alloy with oxidation resistance for electrolytic reduction equipment for treatment of spent nuclear fuel. More particularly, the present invention relates to a structural alloy with oxidation resistance for electrolytic reduction equipment for treatment of spent nuclear fuel wherein Cr, Si, Al, Nb and Ti are added to a Ni-based substrate so as to form an oxide coating film which is stable in a LiCl—Li2O molten salt and, in addition, a process thereof and use of the same.

Abstract: A component for a high-temperature steam turbine which operates at temperatures above 600° C., especially above 700° C., is formed of a nickel-based alloy. The negative influence of oxidation of the component which is induced by the superheated steam is prevented by the alloy which is used, having the following composition (in % by weight): C: ?0.2 Si: ?1.0 Mn: ?1.0 Cr: 22.0-25.0 Co: 15.0-25.0 Mo: ?3.0 Nb: ?2.0 Al: 1.0-3.0 Ti: 2.0-4.0 Fe: ?2.0 Zr: ?0.2 B: ??0.05 Ni: remainder.

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: A memory metal or Nitinol plug is inserted into a tube and heated to cause the plug to expand as it transforms from a martensitic state to an austenitic state. The plug is held by a tool connected to an electric conductor. The tube is then grounded and current is run through the holder, the plug, and, in turn, the tube. Electrical resistance causes the plug to heat up and revert to the austenitic state. The holder is preferably a tube with an internal collet, spring urged into a closed position adapted to grasp a post of the Nitinol plug. To separate the holder from the plug, the collet is pulled to an expanded position by pulling the holder from the tube. This allows the collet to open and separate from the plug.

Abstract: A steam turbine power plant which is provided with an extra-high-pressure turbine 100, a high-pressure turbine 200, an intermediate-pressure turbine 300 and a low-pressure turbine 400, and has high-temperature steam of 650° C. or more introduced into the extra-high-pressure turbine 100, wherein the extra-high-pressure turbine 100 has an outer casing cooling unit which cools an outer casing 111, and a turbine rotor 112, an inner casing 110 and a nozzle box 115 of the extra-high-pressure turbine 100 are formed of an Ni base heat-resisting alloy, and the outer casing 111 is formed of a ferrite-based alloy.

Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.

Abstract: A welding material composition, which is a nickel based super alloy having ?? phase and chromium carbides precipitated. The composition comprising 18 to 25% by weight of Co, 15 to 20% by weight of Cr, 1.5 to 5.5% by weight of Al, 5 to 14% by weight of W, 0.05 to 0.15% by weight of C, 0 to 0.02% by weight of B, 0 to 1% by weight of at least one of Ta, Nb, Ti, Mo, Re and Fe, 0 to 0.5% by weight of at least one of V, Zr, rare earth elements and Y, 0 to 1% by weight of Mn, 0 to 0.5% by weight of Si, and the balance being Ni.

Abstract: A high-temperature protection layer contains (% by weight) 23 to 27% Cr, 4 to 7% Al, 0.1 to 3% Si, 0.1 to 3% Ta, 0.2 to 2% Y, 0.001 to 0.01% B, 0.001 to 0.01% Mg and 0.001 to 0.01% Ca, remainder Ni and inevitable impurities. Optionally, the Al content is in a range from over 5 up to 6% by weight.

Abstract: A Ni-base alloy which has excellent resistance to permanent set at high temperature and which can be produced at low cost, a heat-resistant spring made of the Ni-base alloy, and a process for producing the spring. The Ni-base alloy of the present invention consists of 0.01 to 0.15 mass % of C, 2.0 mass % or less of Si, 2.5 mass % or less of Mn, 12 to 25 mass % of Cr, 5.0 mass % or less of Mo and/or 5.0 mass % or less of W on condition that Mo+W/2 does not exceed 5.0 mass % or less, 1.5 to 3.5 mass % of Ti, 0.7 to 2.5 mass % of Al, 20 mass % or less of Fe, and the balance of Ni and unavoidable impurities. The ratio of Ti/Al in terms of atomic percentage ranges from 0.6 to 1.5 and the total content of Ti and Al ranges from 4.0 to 8.5 atomic %.

Abstract: A nickel-chromium-molybdenum alloy capable of being age hardened for improved strength while maintaining high corrosion resistance contains in weight percent 19.5 to 22 chromium, 15 to 17.5 molybdenum, up to 3 iron, up to 1.5 manganese, up to 0.5 aluminum, up to 0.02 carbon, up to 0.015 boron, up to 0.5 silicon, up to 1.5 tungsten and up to 0.5 of each of hafnium, tantalum and zirconium, with a balance of nickel and impurities. Certain alloying elements must be present in amounts according to an equation here disclosed.

Abstract: A nickel-based superalloy containing 12.0 to 16.0% by weight of Cr, 4.0 to 9.0% by weight of Co, 3.4 to 4.6% by weight of Al, 0.5 to 1.6% by weight of Nb, 0.05 to 0.16% by weight of C, 0.005 to 0.025% by weight of B, and at least one of Ti, Ta and Mo. Amounts of Ti, Ta and Mo are ones calculated by the equations (1) and (2), wherein TiEq is 4.0 to 6.0 and MoEq is 5.0 to 8.0. TiEq=Ti % by weight+0.5153×Nb % by weight+0.2647×Ta % by weight  (1) MoEq−Mo % by weight+0.5217×W % by weight+0.5303×Ta % by weight+1.

Abstract: Burn-resistant metal alloys that also have a high tensile strength are described. The alloys generally include about 55 to about 75 weight percent nickel, about 12 to about 17 weight percent cobalt, about 4 to about 16 weight percent chromium, about 1 to about 4 weight percent aluminum, and about 1 to about 4 weight percent titanium.

Abstract: Creep-proof and corrosion-resistant nickel-based alloy for the use in high-temperature technology, comprising in wt-%: 0.0015 to 0.60 carbon (C); 0.20 to 0.90 nitrogen (N); 22.0 to 32.0 chromium (Cr); 5.0 to 20.0 elements of group 4, 5, and 6 of the periodic table, except Cr; 0.03 to 3.0 aluminum (Al); 0.4 to 3.0 silicon (Si); up to 0.15 elements of group 3 of the periodic table, except actinoids; up to 0.60 manganese (Ma); up to 14.8 iron (Fe); up to 0.01 boron (B); a maximum of 0.014 phosphorus (P); a maximum of 0.004 sulfur (S); a minimum of 51 nickel (Ni) or a combination of nickel (Ni) and cobalt (Co); and melting-related impurities.

Abstract: Protective coatings known in the state of art can reveal either good corrosion resistance or good mechanical properties.

Abstract: A free-cutting Ni-base heat-resistant alloy excellent in the high-temperature strength and corrosion resistance was proposed. The alloy contains Ni as a major component, 0.01 to 0.3 wt % of C and 14 to 35 wt % of Cr, and further contains at least one element selected from Ti, Zr and Hf in a total amount of 0.1 to 6 wt %, and S in an amount of 0.015 to 0.5 wt %. The alloy has dispersed in the matrix thereof a machinability improving compound phase, where such phase contains any one of Ti, Zr and Hf as a major constituent of the metal elements, essentially contains C and either S or Se as a binding component for such metal elements. The alloy also satisfies the relations of WTi+0.53WZr+0.27WHf>2WC+0.75WS and WC>0.37WS, where WTi represents Ti content (wt %), WZr represents Zr content (wt %), WHf represents Hf content (wt %), WC represents C content (wt %) and WS represents S content (wt %).

Abstract: A Ni-base heat resistant alloy excellent in weldability and strength at elevated temperatures and suited for use in manufacturing cracking furnace tubes and reformer furnace tubes to be used in ethylene plants as well as a welded joint therefor is provided. The alloy of the invention is a Ni-base heat-resistant alloy, which comprises C: not more than 0.1%, Si: not more than 2%, Mn: not more than 2%, P: not more than 0.025%, S: not more than 0.005%, N: not more than 0.04%, Cr: 10 to 30%, Al: 2.1 to less than 4.5%, and Mo: 2.5 to 15% or W: 2.5 to 9% or Mo and W: 2.5 to 15% in total, and satisfies the relation (1) given below: (104Si+1980P+1980S+9Al+15Ti+11Nb+1.8W+11600B)≦{1.

Abstract: A fusion weldable superalloy containing 0.005-0.5 wt. % scandium. In one embodiment, the superalloy may have a composition similar to IN-939 alloy, but having added scandium and having only 0.005-0.040 wt. % zirconium. A gas turbine component may be formed by an investment casting of such a scandium-containing superalloy, and may include a fusion weld repaired area. A scandium-containing nickel-based superalloy coated with an MCrAlY bond coat will have improved cyclic oxidation resistance due to the sulfur-gettering effect of the scandium.

Abstract: A Ni-base alloy which has excellent resistance to permanent set at high temperature and which can be produced at low cost, a heat-resistant spring made of the Ni-base alloy, and a process for producing the spring. The Ni-base alloy of the present invention consists of 0.01 to 0.15 mass % of C, 2.0 mass % or less of Si, 2.5 mass % or less of Mn, 12 to 25 mass % of Cr, 5.0 mass % or less of Mo and/or 5.0 mass % or less of W on condition that Mo+W/2 does not exceed 5.0 mass % or less, 1.5 to 3.5 mass % of Ti, 0.7 to 2.5 mass % of Al, 20 mass % or less of Fe, and the balance of Ni and unavoidable impurities. The ratio of Ti/Al in terms of atomic percentage ranges from 0.6 to 1.5 and the total content of Ti and Al ranges from 4.0 to 8.5 atomic %.

Abstract: A low thermal expansion Ni-base superalloy contains, by weight % (hereinafter the same as long as not particularly defined) C: 0.15% or less; Si: 1% or less; Mn: 1% or less; Cr: 5 to 20%; at least one of Mo, W and Re of Mo+½ (W+Re) of 17 (exclusive) to 25%; Al: 0.2 to 2%; Ti: 0.5 to 4.5%; Fe of 10% or less; at least one of B: 0.02% and Zr: 0.2% or less; a remainder of Ni and inevitable impurities; wherein the atomic % of Al+Ti is 2.5 to 7.0.

Abstract: A solution treatment is firstly performed for a non-heat-treated Ni based alloy having a composition equivalent to that of Inconel 718 (registered trademark). Subsequently, a primary aging treatment is applied by holding the Ni based alloy at 610 to 660° C. for 5 to 10 hours. After that, a secondary aging treatment is performed by holding the Ni based alloy at 710 to 760° C. for 5 to 10 hours. There are 700 or more precipitates per &mgr;m2, in which each precipitate has a longer diameter of not less than 0.5 nm, in a metal microstructure of the Ni based alloy. Some of the precipitates are large precipitates having average diameters of 25 nm to 1 &mgr;m. There are 10 or more large precipitates per &mgr;m2. A forging die is produced with the Ni based alloy.

Abstract: Burn-resistant metal alloys that also have a high tensile strength are described. The alloys generally include about 55 to about 75 weight percent nickel, about 12 to about 17 weight percent cobalt, about 4 to about 16 weight percent chromium, about 1 to about 4 weight percent aluminum, and about 1 to about 4 weight percent titanium.

Abstract: A nickel base superalloy comprising 14.0 to 20.0 wt % cobalt, 13.5 to 17.0 wt % chromium, 2.5 to 4.0 wt % aluminium, 3.4 to 5.0 wt % titanium, 0 to 3.0 wt % tantalum, 3.8 to 5.5 wt % molybdenum, 0.035 to 0.07 wt % carbon, 0.01 to 0.04 wt % boron, 0.055 to 0.075 wt % zirconium, 0 to 0.4 wt % hafnium and the balance nickel plus incidental impurities. The nickel base superalloy is suitable for use as gas turbine engine high pressure compressor rotor discs or turbine discs. It is capable of operation at temperatures above 700° C. and has good fatigue crack propagation resistance, creep resistance and tensile strength.

Abstract: A low thermal expansion Ni-base superalloy contains, by weight % (hereinafter the same as long as not particularly defined), C: 0.15% or less; Si: 1% or less; Mn: 1% or less; Cr: 5 to 20%; at least one of Mo, W and Re of Mo+½ (W+Re) of 10 to 25%; Al: 0.2 to 2%; Ti: 0.5 to 4.5%; Fe of 10% or less; at least one of B: 0.02% and Zr: 0.2% or less; a remainder of Ni and inevitable impurities; wherein the atomic % of Al+Ti is 2.5 to 7.0.

Abstract: A nickel, chromium, iron alloy for use in producing weld deposits. The alloy comprises, in weight percent, about 27 to 31.5 chromium; about 7 to 11 iron; about 0.005 to 0.05 carbon; less than about 1.0 manganese, preferably 0.30 to 0.95 manganese; about 0.60 to 0.95 niobium; less than 0.50 silicon, preferably 0.10 to 0.30 silicon; 0.01 to 0.35 titanium; 0.01 to 0.25 aluminum; less than 0.20 copper; less than 1.0 tungsten; less than 1.0 molybdenum; less than 0.12 cobalt; less than 0.10 tantalum; less than about 0.10 zirconium, preferably 0.002 to 0.10 zirconium; less than about 0.01 sulfur; less than about 0.01 boron, preferably 0.001 to 0.01 boron; less than about 0.02 phosphorous; and balance nickel and incidental impurities.

Abstract: Machineable nickel base alloy casting, consisting essentially of, in weight %, about 12.5% to 15% Cr, about 9.00% to 10.00% Co, about 3.70% to 4.30% Mo, about 3.70% to 4.30% W, about 2.80% to 3.20% Al, about 4.80% to 5.20% Ti, about 0.005% to 0.02% B, up to about 0.10% Zr, and balance essentially Ni and carbon below about 0.08 weight % to improve machinability while retaining alloy strength properties after appropriate heat treatment.

Abstract: A composition comprises cobalt; chromium; carbon; boron; zirconium; aluminum; at least one refractory material; and nickel. The composition is used as a repair material for repairing superalloy articles in a repair process.

Abstract: Soft magnetic alloy of the iron-nickel type, the chemical composition of which comprises, by weight: 40%≦Ni+Co≦65%; 0%≦Co≦7%; 2%≦Cr≦5%; 1%≦Ti≦3%; 0%≦Al≦0.5%; 0%≦Mn+Si≦2%; optionally, up to 3% Mo, 2% W, 2% V, 1.5% Nb, 1% Ta and 3% Cu, the sum of the Cr, Mo, W, V, Nb, Ta and Cu contents being less than 7% and the sum of the Mo, W, V, Nb, Ta and Cu contents being less than 4%; the balance being iron and impurities, such as carbon, sulfur and phosphorus, resulting from the smelting process, the chemical composition furthermore satisfying the relationships: Cr<5−0.015×(Ni+Co−52.5)2, if: Ni+Co≦52.5; Cr<5−0.040×(Ni+Co−52.5)2, if: Ni+Co≧52.5; the alloy having a saturation induction Bs of greater than 0.9 tesla, a coercive field of less than 10 A/m, an electrical resistivity p of greater than 60 &mgr;&OHgr;.cm and a hardness of greater than 200 HV. Process for manufacturing the alloy and uses.

Abstract: Improved compositions for fabricating nickel superalloy single crystal articles are described. The compositions are characterized by the substantial absence of carbon, boron, zirconium and vanadium and intentional additions of cobalt. The cobalt additions increase the stability of the compositions and provide enhanced heat treatability. Single crystal articles of these compositions have utility as gas turbine engine components.

Abstract: A high corrosion resisting alloy for use in inlet and exhaust valves of diesel engines which is low in cost and excellent in corrosion resistance and strength, which consists by weight percentage of C.ltoreq.0.1%, Si.ltoreq.1.0%, Mn.ltoreq.1.0%, 25%<Cr.ltoreq.32%, 2.0%<Ti.ltoreq.3.0%, 1.0%.ltoreq.Al.ltoreq.2.0% and the balance being Ni and incidental impurities. The valves for the diesel engines are manufactured through the steps of forging the above-mentioned alloy into near net shapes of the valves, performing aging treatment (after solid solution treatment according to demand), and further enhancing hardness of the valves at their valve faces locally through partial cold forging.

Abstract: A high-temperature sulfidation-corrosion resistant nickel-base alloy includes 12.about.15 weight % of cobalt, 18.about.21 weight % of chromium, 3.5.about.5 weight % of molybdenum, 0.02.about.0.1 weight % of carbon, at most 2.75 weight % of titanium, and at least 1.6 weight % of aluminum. The remainder is essentially of nickel except for impurities. The high-temperature sulfidation-corrosion resistant nickel-base alloy has sufficient high-temperature strength and is highly resistant to a high-temperature sulfidation corrosion.

Abstract: A method of producing filled sandwich cookies to be fed by an auger into an ice cream stream to produce ice cream with filled cookies comprising baking dough in units of multiple cookie elements, of substantially round shape, applying filling to each cookie element of a portion of the units which have been produced, sandwiching other units onto the filling, and then separating the multiple sandwich cookie units into individual sandwich cookies; the units comprise multiple cookie elements of approximately round shape, and each of which is between one-half inch and seven eighths inch diameter, the units containing two rows with three cookies in each row, with juncture lines between adjacent cookies.

Abstract: A protective coating resistant to corrosion at medium and high temperatures is applied on a nickel-based or cobalt-based superalloy component. The protective coating essentially consists of the following elements (in percent by weight): 25 to 40% nickel, 28 to 32% chromium, 7 to 9% aluminum, 1 to 2% silicon, 0.3 to 1% of at least one reactive element of the rare earths, at least 5% cobalt; and impurities, as well as selectively from 0 to 15% of at least one of the elements of the group consisting of rhenium, platinum, palladium, zirconium, manganese, tungsten, titanium, molybdenum, niobium, iron, hafnium, and tantalum. The total share of the elements of the group is from 0 to a maximum of 15% and a remainder of at least 5% cobalt. The component and the coating applied thereon have a ductile brittle transition temperature below 500.degree. C.

Abstract: A protective coating resistant to corrosion at medium and high temperatures is applied on a nickel-based or cobalt-based superalloy component. The protective coating essentially consists of the following elements (in percent by weight): 25 to 40% nickel, 28 to 32% chromium, 7 to 9% aluminum, 1 to 2% silicon, 0.3 to 1% of at least one reactive element of the rare earths, at least 5% cobalt; and impurities, as well as selectively from 0 to 15% of at least one of the elements of the group consisting of rhenium, platinum, palladium, zirconium, manganese, tungsten, titanium, molybdenum, niobium, iron, hafnium, and tantalum. The total share of the elements of the group is from 0 to a maximum of 15% and a remainder of at least 5% cobalt. The component and the coating applied thereon have a ductile brittle transition temperature below 500.degree. C.

Abstract: A high Cr austenitic heat resistant alloy excellent in high temperature strength which essentially consists of, in weight percent, from more than 0.02% to 0.10% C, not more than 1.0% Si, not more than 2.0% Mn, 28 to 38% Cr, 35 to 60% Ni, from more than 0.5% to 1.5% Ti, not more than 0.05% N, 0.01 to 0.3% Al, 0.001 to 0.01% B, 0 to 0.1% Zr, 0 to 1.0% Nb, one or both of 0.5 to 3.0% Mo and 1.0 to 6.0% W, and the balance being Fe and incidental impurities. The alloy may further contain one or both of 0.001 to 0.05% Mg and 0.001 to 0.05% Ca. This alloy is suitable for producing a single layered tube which is less expensive and more reliable than the conventional double layered tube.

Abstract: A process is provided for welding a gamma-prime precipitation-strengthened nickel base superalloy by heating the weld area and adjacent region to a ductile temperature, welding while maintaining the entire weld area and adjacent region at the ductile temperature and holding the weldment, weld area and adjacent region at the ductile temperature until the entire weld has solidified. The ductile temperature is above the aging temperature but below the incipient melting temperature of the superalloy.