Abstract: A thermomechanical process for producing high strength and thermally stable alloys, comprising the steps of: pre-heating an alloy bar or rod stock of a pre-selected size at a temperature below that at which grain growth occurs; and thereafter rotoforging the heated alloy bar or rod stock at a sufficient deformation level and temperature to fragment the grain boundary phases of the alloy. The resulting alloy is characterized by an ultra-fine, very uniform grain size, high tensile strength at room and high temperatures, good ductility, and a stress-rupture rate that is about twice as long as conventional alloys that have not undergone the thermomechanical process.

Abstract: A method of producing a silicon based alloy is described which comprises melting a silicon alloy containing greater than 50 wt. % silicon and preferably including aluminium. The melted alloy is then inert gas atomized to produce powder or a spray formed deposit in which the silicon forms a substantially continuous phase made up of fine, randomly oriented crystals in the microstructure. The alloy produced by the method has particularly useful application in electronics packaging materials and a typical example comprises an alloy of 70 wt. % silicon and 30 wt. % aluminium. Such an alloy is an engineering material which, for example, is machinable.

Abstract: A cast nickel-base superalloy component (10) is made having a composition containing small amounts of both boron and zirconium which are effective in combination to provide increased weldability, where such alloy is adapted for welding by weld (18) to a second superalloy piece, where the two pieces are firmly bonded together and have a Sigmajig transverse stress value (16) greater than 137.9 million Newtons per square meter.

Abstract: Mn alloy materials for magnetic materials contain 500 ppm or less, preferably 100 ppm or less, oxygen, 100 ppm or less, probably 20 ppm or less, sulfur, and preferably a total of 1000 ppm or less, more preferably 500 ppm or less, impurities (elements other than Mn and the alloying component). The alloying component that forms an alloy with Mn is one or two or more elements selected from the group consisting of Fe, Ir, Pt, pd, Rh, Ru, Ni, Cr and Co. Sputtering targets formed from the Mn alloy materials for use in depositing magnetic thin film, and the thin films so produced.

Abstract: A modified Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy which has at least one of the following characteristics: 1) an increased charge/discharge rate capability over that the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; 2) a formation cycling requirement which is reduced to one tenth that of the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; or 3) an oxide surface layer having a higher electrochemical hydrogen storage catalytic activity than the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy.

Abstract: An ultra supercritical boiler tubing alloy characterized by a microstructure stabilized and strengthened for 375 bar/700° C. steam, in weight percent, service and alloyed to resist coal ash/flue gas corrosion for 200,000 hours consisting of 10 to 24 cobalt, 22.6 to 30 chromium, 2.4 to 6 molybdenum, 0 to 9 iron, 0.2 to 3.2 aluminum, 0.2 to 2.8 titanium, 0.1 to 2.5 niobium, 0 to 2 manganese, 0 to 1 silicon, 0.01 to 0.3 zirconium, 0.001 to 0.01 boron, 0.005 to 0.3 carbon, 0 to 4 tungsten, 0 to 1 tantalum and balance nickel and incidental impurities.

Abstract: A modified Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy which has at least one of the following characteristics: 1) an increased charge/discharge rate capability over that the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; 2) a formation cycling requirement which is reduced to one tenth that of the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy; or 3) an oxide surface layer having a higher electrochemical hydrogen storage catalytic activity than the base Ti—V—Zr—Ni—Mn—Cr electrochemical hydrogen storage alloy.

Abstract: The invention relates to an alloy steel with 0.3 to 1.0% carbon, 0.2 to 2.5% silicon, up to 0.8% manganese, 30.0 to 48.0% nickel, 16.0 to 22.0% chromium, 0.5 to 18.0% cobalt, 1.5 to 4% molybdenum, 0.2 to 0.6% niobium, 0.1 to 0.5% titanium, 0.1 to 0.6% zirconium, 0.1 to 1.5% tantalum and 0.1 to 1.5% hafnium, balance more than 20% iron when the cobalt content is at least 10% and more than 30% iron when the cobalt content is less than 10%. The steel is particularly suitable for use as a heat resistant and high hot strength material for parts, in particular pipes, of petrochemical cracking furnaces for the production of ethylene or synthesis gases.

Abstract: The invention, which enables wider use to be made of soft-soldering techniques, concerns an alloy, in particular a solder alloy, a method of joining workpieces by soldering using the solder alloy and the use of the alloy for soldering. The alloy proposed is characterized in that it contains at least 1% by wt. of an element or a mixture of elements from sub-group IVa and/or Va in the periodic table, at least 0.01% by wt. of an element or a mixture of elements from the lanthanide series; optionally at least 0.5% of silver or copper or indium or a mixture silver and/or copper and/or indium; and optionally at least 0.01% by wt. of gallium, the remainder consisting of tin or lead or a mixture of tin and lead plus, as applicable, the usual impurities. The alloy proposed can be used as solder in oxygen-containing atmospheres such as air, can be used at relatively low temperatures and efficiently wets normally difficult to wet surfaces such as ceramic surfaces.

Abstract: A high-strength low-thermal-expansion alloy consisting of, by weight, 0.06 to 0.50% C, 25 to 65% in total of one or both of 65% or less Co and less than 30% Ni, and balance of Fe as a main component, other optional elements and unavoidable impurities, and having a primary phase of austenite phase and martensite phase induced by working. A wire is made from the alloy.

Abstract: The invention relates to a coating composition for superalloy structural parts, especially for gas turbine vanes and blades, which provides simultaneously excellent environmental resistance and highly improved thermomechanical behavior. The coating consists essentially of, by weight, 28-35% Co, 11-15% Cr, 10-13% Al, 0-1% Re, 1-2% Si, 0.2-1% Ta, 0.005-0.5% Y, 0-5% Ru, 0-1% Ca, 0-1% Mg, 0-0.5% La (or elements from the La series), 0-0.1% B, balance Ni and incidental impurities.

Abstract: A wear resistant alloy is provided having a composition by weight of 1.0-2.5 C, 1.5-4.5 Si, 8.0-20.0 Cr, 9.0-20.0 W and/or Mo, 0.5-2.0 Nb, 20.0-40.0 Fe, and the balance being Ni (>25.0). This alloy provides excellent wear resistance and good hot hardness with relatively low cost compared to prior art nickel base alloys. The alloy has particular use as a valve seat insert materials in diesel fuel internal combustion engines.

Abstract: A cutting tool having cutting edges made of a high speed tool steel exhibiting very high wear and anti-chipping resistances, and sufficient toughness is provided. The high speed tool steel consists essentially of by weight C:0.6 to 1.8%, Si:1.2% max, Mn:0.5% max, Cr:3.5 to 5.0%, Mo:10% max, W:21% max, V:2 to 4% and Co:7 to 10%, the balance being Fe and incidental impurities, and the steel of the cutting edge comprise MC-type carbide grains each having a maximum equal value diameter of a circle ranging substantially 5 to 14 &mgr;m, and the MC-type carbide grains having an equal value diameter of the circle ranging substantially 5 to 14 &mgr;m have a ratio between short and long diameters ranging over substantially 0.3.

Abstract: Improved Ni, Fe and Co based superalloys having excellent oxidation resistance and weldability. The superalloys are obtained by at least partially replacing the Ni in conventional superalloys with Pd. The alloys may also contain strengtheners and modifiers such as Co, W, Mo, V, Ti, Re, Ta, Nb, C, B, Zr, Y, and Hf. The superalloy has good strength, improved weldability and excellent oxidation resistance suitable for use in many aerospace and power generation turbine applications. A preferred embodiment comprises (in wt %) 1-9% (Al+Ti), 0-0.01% B, 0-0.15% C, 0-25% Co, 5-30% Cr, 0-10% Fe, 0-0.009% (Hf+Y+Sc), 1-15% (Mo+W), 0-8% (Nb+Ta), 40-68% Ni, 4-32% Pd, 0-10% (Re+Rh), 0-5% V, and 0-0.015% Zr.

Abstract: Lead-free alloys of the present invention includes bismuth in the amount of 30 to 58% by weight and one of the following first to fourth compositions in addition to tin as a main component. In the first composition, germanium is present in the amount of 0.1 or less % by weight. In the second composition, silver is present in the amount of 5% by weight or less and antimony is present in the amount of 5% by weight or less in addition to 0.1% by weight or less of germanium of silver. In the third composition, nickel and copper are included, preferably 0.2 or less % by weight or less of nickel and 1% by weight of copper. In the fourth composition, at least one selected from the group of 5 or less % by weight of silver, 5 or less % by weight of antimony, and 0.1 or less % by weight of germanium in addition to 0.2 or less % by weight of nickel and 1 or less % by weight of copper.

Abstract: Master alloy with 20-80% strontium, preferably 0.01-2.0% of aluminum and/or copper, and the balance essentially zinc plus impurities, and a method for preparing same and a method for modifying the microstructure of nonferrous alloys with said master alloy.

Abstract: A Co-base alloy including, by weight, 0.03-0.10% C, not more than 1.0% Si, not more than 1.0% Mn, 20-30% Cr, 15-23% Ni, 3-10% W, 5-10% Ta and 0.05-0.7% Zr, is used as a welding material. A gas turbine nozzle has a crack repaired with a multi-layer weld using the Co-base alloy and a gas turbine for power generation employs the nozzle.

Abstract: Tin and zinc based shot for use as ammunition having a diameter of from 1.5 to 5.5 mm, containing, by weight, in addition to tin and the usual unavoidable contaminants, from 12 to 60% of zinc and from 0 to 5% of aluminum, but less than 0.1% of copper, less than 0.1% of iron, and less than 1% of lead.

Abstract: Bismuth bearing copper-nickel-manganese-zinc corrosion and gall resistant castable alloy, particularly for use in food processing machinery, with the following weight percentage range:Nickel=12-28Manganese=12-28Zinc=12-28Aluminum=0.5-2.00Bismuth=2-6Phosphorus=0-0.3Tin =0-1.5Iron=0-1.

Abstract: A powder-metallurgy produced high-speed steel article having a combination of high hardness and wear resistance, particularly at elevated temperatures. This combination of properties is achieved by the combination of W, Mo, V, and Co. The article is particularly suitable for use in the manufacture of gear cutting tools, such as hobs, and surface coatings.

Abstract: Master alloy with 20-80% strontium, preferably 0.01-2.0% of aluminum and/or copper, and the balance essentially zinc plus impurities, and a method for preparing same and a method for modifying the microstructure of nonferrous alloys with said master alloy.

Abstract: The present invention provides a scandium containing hydrogen absorption alloy having an alloy phase which is represented by the following formula;(Sc.sub.x A.sub.1-x)(B'.sub.y B".sub.2-y).sub.zwherein A is at least one of Ti, Zr, rare-earth elements, a mixture of Ti and at least one of Zr, Ta, Nb, Hf, Ca and rare-earth elements, and a mixture of Zr and at least one of Ti, Ta, Nb, Hf, Ca and rare-earth elements; B'is at least one of Ni, Fe, Co and a mixture of at least one of Ni, Fe and Co and at least one of Al, Ga, Si and In; B" is at least one of Mn, V, Cr, Nb, Ti and a mixture of at least one of Mn, V, Cr, Nb and Ti and at least one of Al, Ga, Si and In; x represents 0<x.ltoreq.1; y represents 0<y<2; and z represents 0.75.ltoreq.z.ltoreq.1.2, and the alloy phase includes at least one of a part which belongs to a C15 type Laves phase and a part which belongs to a C14 type Laves phase, and a hydrogen absorption electrode which includes the alloy.

Abstract: Nonevaporable getter alloys containing Zr, Co, and a third component A selected from the rare each metals and mixtures thereof, e.g., mischmetal. A most preferred alloy contains about 80.8 wt % Zr, about 14.2 wt % Co, and about 5 wt % A. These alloys are advantageous because they are suitable for general use, i.e., they have a relatively low activation temperature, are capable of sorbing a wide variety of gases, and minimize the environmental and safety risks associated with known nonevaporable getter alloys.

Abstract: A nickel-metal hydride storage battery having a high capacity and excellent cycle life is disclosed. The battery employs, as its material for the negative electrode, a hydrogen storage alloy powder having a composition represented by the general formula Zr.sub.1-x M3.sub.x Mn.sub.a Mo.sub.b Cr.sub.c M1.sub.d M2.sub.e Ni.sub.f, where M1 represents at least one element selected from the group consisting of V, Nb and rare earth elements, M2 represents at least one element selected from the group consisting of Fe, Co and Cu, and M3 represents at least one element selected from the group consisting of Ti and Hf, and where 0.ltoreq.x.ltoreq.0.3, 0.3.ltoreq.a.ltoreq.0.7, 0.01.ltoreq.b.ltoreq.0.2, 0.05.ltoreq.c.ltoreq.0.3, 0.ltoreq.d.ltoreq.0.1, 0.ltoreq.e.ltoreq.0.2, 0.8.ltoreq.f.ltoreq.1.3, and 1.6.ltoreq.a+b+c+d+e+f.ltoreq.2.2, and wherein said hydrogen storage alloy has at least one of a Laves phase having a crystal structure of the MgCu.sub.2 -type (C15) and a Laves phase having a crystal structure of the MgZn.

Abstract: The present invention provides a Ni--Ti--Pd superelastic alloy material of a composition consisting of, by atomic percent, 34 to 49% nickel, 48 to 52% titanium and 3 to 14% palladium. Optionally, in a part of nickel and/or titanium of this alloy is replaced with one or more elements selected from a group of Cr, Fe, Co, V, Mn, B, Cu, Al, Nb, W and Zr such that these elements to be replaced amount to 2% or less in total (by atomic percent), wherein a stress hysteresis between the loading and unloading stresses in the stress-strain curve at temperatures between Af and Af+5.degree. is as small as 50 to 150 MPa. Since the Ni--Ti--Pd superelastic alloy material having the above composition is excellent in hot workability, it can be hot-worked into a wire having a diameter up to the range from 1 to 5 mm and manufactured at a low cost. Then, a final heat-treatment is given to the hot-worked material at a temperature in the range from 300 to 700.degree. C.

Abstract: There is provided a hydrogen occluding alloy exhibiting high absorption and desorption speeds. A hydrogen occluding alloy comprising as an overall composition: 25 to 45 weight % Zr+Hf, wherein the Hf comprises not more than 4%, 1 to 12 weight % Ti, 10 to 20 weight % Mn, 2 to 12 weight % V, 0.6 to 5 weight % rare earth elements, and a balance Ni (of which content is not less than 25 weight %) and unavoidable impurities, and basically having a three-phase structure consisting of: a main phase which constitutes the matrix of the alloy and which is made of a Zr--Ni--Mn based alloy, a dispersed granular phase made of a rare earth elements--Ni type alloy distributed along the grain boundary of the main phase, and a flaky phase which is made of a Ni--Zr type alloy attached to the dispersed granular phase and intermittently distributed along the grain boundary mentioned above.

Abstract: A heat resisting alloy for use in exhaust valves low in price and excellent in the cold workability and possible to be formed into valve shapes through the cold or warm working, which consists by weight percentage of C: 0.01.about.0.1%, Si.ltoreq.2%, Mn.ltoreq.2%, Cr: 12.about.25%, Nb+Ta: 0.2.about.2.0%, Ti.ltoreq.3.5%, Al: 0.5.about.3.0%, Ni: 25.about.45%, Cu: 0.1.about.5.0%, optionally at least one element selected from W.ltoreq.3%, Mo.ltoreq.3%, and V.ltoreq.1% with (1/2W+Mo+V).ltoreq.3%, Co.ltoreq.5% with Ni+Co: 25.about.45%, Ca+Mg: 0.001.about.0.01%, one or both of B.ltoreq.0.01% and Zr: 0.001.about.0.1%, and the balance of Fe and incidental impurities.

Abstract: An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability.The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The volume fraction of R.sub.2 Fe.sub.17 phase (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy and the average size of an R.sub.2 Fe.sub.17 phase is 20 .mu.m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.

Abstract: A heat resisting steel consists essentially of 0.005-0.20% of C, 0.01-2.0% of Si, 0.1-2.0% of Mn, 20-30% of Ni, 10-20% of Cr, 3.0-4.5% of Ti and 0.1-0.7% of Al with the ratio Ti/Al being 5-20, and the balance being substantially Fe, which is excellent in the tensile properties at the room temperature and 700.degree. C., and the creep rupture properties at the temperature of 700.degree. C.

Abstract: A silicide-based composite toughened with a niobium-based metallic phase and further containing a silicon-modified chromium-based Laves-type phase to promote oxidation resistance. The silicide-based composite generally contains one or more silicide intermetallic phases, each of which is an M.sub.5 Si.sub.3 -type or an M.sub.3 Si-type phase where M is at least Nb+Ti+Hf. The niobium-based metallic phase contains at least niobium, titanium, hafnium, chromium, aluminum and silicon. The silicon-modified Laves-type phase is of the Cr.sub.2 M type where M is Nb+Ti+Hf. The silicide-based composite is formulated to contain greater than 25 volume percent of the niobium-based metallic phase, the balance being the silicide intermetallic phases and the silicon-modified Laves-type phase.

Abstract: A silicide-based composite toughened with a niobium-based metallic phase, and further containing a phase that significantly improves the oxidation resistance of the composite. The oxidation-resistant phase is a chromium-based Laves-type phase modified with silicon, which has been shown to greatly increase the oxidation resistance of silicide-based composites at temperatures of up to 1200 C. The oxidation-resistant silicide-based composite generally contains one or more silicide intermetallic phases, each of which is an M.sub.5 Si.sub.3 -type phase where M is Nb+Ti+Hf. The niobium-based metallic phase contains niobium, titanium, hafnium, chromium, aluminum and silicon. The silicon-modified Laves-type phase is of the Cr.sub.2 M type where M is Nb+Ti+Hf. A silicide-based composite contains, in atomic percent, about 12-25% titanium, about 6-12% hafnium, about 15-25% chromium, about 1-8% aluminum and about 12-20% silicon, with the balance essentially niobium.

Abstract: The present invention provides a hydrogen-absorbing alloy system of ultra high capacity for electrode of secondary battery. In accordance with the present invention, the hydrogen-absorbing Ti alloy system is represented as a following general formula:Ti.sub.A Zr.sub.B V.sub.C Mn.sub.D Ni.sub.E M.sub.Fwherein, M represents at least one metal which is selected from the group consisting of Cr, Co, Fe, Cu, Al, Si, Hf, Nb, Mo and R.E., where R.E. represents at least one metal which is selected from the group of rare-earth elements consisting of La, Ce, Pr, Nd and Sm; and, A, B, C, D, E and F have atomic ratios ranging 0.2.ltoreq.A.ltoreq.0.35, 0.03.ltoreq.B.ltoreq.0.15, 0.15.ltoreq.C.ltoreq.0.4, 0.8.ltoreq.D.ltoreq.0.2, 0.13.ltoreq.E.ltoreq.0.35 and 0.ltoreq.F.ltoreq.0.1, respectively, with the proviso that A+B+C+D+E+F=1 and A+B.ltoreq.0.45.

Abstract: An Fe--Ni alloy for use as a part 10 of an electron-gun 4 is press-blanked by a punch to form minute apertures 10a, 10b, 10c for passing an electron beam 3. The burrs 10 formed around the minute apertures 10a, 10b, 10c are detrimental to such part 4. The Fe--Ni alloy according to the present invention essentially consists of from 30 to 55 wt % of Ni, not more than 0.5 wt % of Si, not more than 1.5 wt % of Mn, and the balance being Fe and unavoidable impurities. The alloy includes from 10 to 1,000 of A type or B type non-metallic inclusions of 10 .mu.m or more in length per 1 mm.sup.2 of longitudinal cross section, and from 100 to 50,000 of C type non-metallic inclusions having a diameter of 5 .mu.m or less.

Abstract: A braze material for repairing an article, and particularly industrial gas turbine engine nozzles formed from nickel-base superalloys. The braze material is composed of a nickel-base braze alloy that is preferably in powder form and dispersed in a suitable vehicle, such as a binder that forms a slurry with the powder. The braze alloy is formulated to be capable of withstanding the high temperature operating environment of an industrial gas turbine nozzle, and to have a melting temperature below the recrystallization temperature of the superalloy to be repaired. A desirable composition for the braze alloy, in weight percent, about 14 to 24 chromium, about 6 to 15 cobalt, about 0.7 to 2.5 boron, about 1.0 to 2.0 titanium, about 0.6 to 1.0 aluminum, about 1.0 to 1.4 tungsten, about 0.4 to 0.6 columbium, about 0.5 to 0.7 tantalum, and up to about 0.7 iron, with the balance being nickel and incidental impurities.

Abstract: The present invention relates to a material for hydrogen-storage constituted by Ti-Mn alloy system which has a high hydrogen-storage capacity, plateau hydrogen dissociation equilibrium pressure, hypostoichiometric composition and crystal structure of C14. Ti-Mn alloy system for hydrogen-storage of the invention which has a C14 crystal structure, is represented as: Ti.sub.u Zr.sub.v Mn.sub.w Cr.sub.x V.sub.y X.sub.z, wherein, X is at least one of element selected from the group consisting of Fe, Al and Ni; u, v, w, x, y and z are mole numbers of each components; 0.7<u<1.0; 0<v<0.3; 1.0.ltoreq.w.ltoreq.1.3; 0.1.ltoreq.x.ltoreq.0.4; 0<y<0.3; 0.ltoreq.z.ltoreq.0.2; 0.7<u+v<1.0; 1.4.ltoreq.w+x.ltoreq.1.7; and, 1.3.ltoreq.w+x+y+z<2.0.

Abstract: This invention relates to nickel-cobalt based alloys comprising the following elements in percent by weight: from about 0.002 to about 0.07 percent carbon, from about 0 to about 0.04 percent boron, from about 0 to about 2.5 percent columbium, from about 12 to about 19 percent chromium, from about 0 to about 6 percent molybdenum, from about 20 to about 35 percent cobalt, from about 0 to about 5 percent aluminum, from about 0 to about 5 percent titanium, from about 0 to about 6 percent tantalum, from about 0 to about 6 percent tungsten, from about 0 to about 2.5 percent vanadium, from about 0 to about 0.06 percent zirconium, and the balance nickel plus incidental impurities, the alloys having a phasial stability number N.sub.v3B less than about 2.60. Furthermore, the alloys have at least one element selected from the group consisting of aluminum, titanium, columbium, tantalum and vanadium. Also, the alloys have at least one element selected from the group consisting of tantalum and tungsten.

Abstract: This invention provides a hydrogen occluding alloy having a composition comprising, by wt %, 25% to 45% of Zr, 1% to 12% of Ti, 10% to 20% of Mn, 2% to 12% of V, 0.5% to 5% of at least one rare earth element, optionally 0.1% to 4% of Hf, one or more selected from hydrogen, hydrogen+oxygen, and oxygen, and a balance being Ni (25% or more of Ni) and unavoidable impurities, having a structure comprising: a phase made of a hydrogenated-product, dispersedly distributed in a matrix phase made of a Zr--Ni--Mn based alloy. The hydrogenated-product mainly comprises a rare earth element-Ni type alloy and a rare earth element hydride with numerous cracks formed at the time when the hydrogenated-product phase is generated. The hydrogenated-product phase is formed by exposing a hydrogen-containing substance on the surfaces of the cracks. Electrodes made of the alloy are disclosed.

Abstract: A heat-resistant nickel-based alloy having excellent welding properties, said nickel-based alloy consisting essentially of, in terms of wt. %, 0.05 to 0.25% of C, 18 to 25% of Cr, 15 to 25% of Co, at least one selected from the group consisting of up to 3.5% of Mo and 5 to 10% of W, with W+1/2Mo being 5 to 10%, 1.0 to 5.0% of Ti, 1.0 to 4.0% of Al, 0.5 to 4.5% of Ta, 0.2 to 3.0% of Nb, 0.005 to 0.10% of Zr, 0.001 to 0.01% of B and the balance being Ni and unavoidable impurities, wherein the (Al+Ti) content and the (W+1/2Mo) content are within the range surrounded by the lines connecting points A (Al+Ti: 5%, W+1/2Mo: 10%), B (Al+Ti: 5%, W+1/2Mo: 5%), C (Al+Ti: 7%, W+1/2Mo: 5%), and D (Al+Ti: 7%, W+1/2Mo: 10%) excluding the line A-B in FIG. 1.

Abstract: A heat-resistant alloy comprising, as expressed in % by weight, 0.03 to 0.1% of C, 0.2 to 0.7% of Si, 0.2 to 0.7% of Mn, 42 to 60% of Ni, 25 to 35%0 of Cr, 8 to 20% of W, over 0% to not more than 8% Mo, over 0% to not more than 5% of Co, and the balance substantially Fe. The alloy has improved resistance to compressive deformation and oxidation resistance for use in oxidizing atmospheres having a high temperature of 1250.degree. C.

Abstract: An iron-nickel superalloy of the type IN 706 has an addition of 0.02 to 0.3 percent by weight of boron and/or 0.05 to 1.5 percent by weight of hafnium. By means of this addition, a virtual doubling of the ductility is achieved as compared with an addition-free iron-nickel superalloy of the type IN 706, while the hot strength is reduced only slightly. The alloy is particularly suitable as a material for rotors of large gas turbines. It has a sufficiently high hot strength. When locally acting temperature gradients arise unwanted stresses can occur to only a slight extent because of the high ductility of the alloy.

Abstract: The invention provides a new method for casting alloys containing a finely divided phase. A bath of the molten metal having a melting point is provided. A finely divided solid metal having a melting point greater than the melting point of molten metal is introduced into the molten metal. The finely divided metal is reacted with the molten metal to form a solid phase within the molten metal. The molten bath is then mixed to distribute the solid phase within the molten metal. The molten alloy is then cast into a solid object containing the solid phase. The solid phase is insoluble in the matrix and has a size related to the initial size of the finely divided solid. The alloy of the invention advantageously consists essentially of, by weight percent, about 3 to 40 aluminum, about 0.8 to 25 nickel, about 0 to 12 copper and balance zinc and incidental impurities. The alloy has a zinc-containing matrix with nickel-containing aluminides distributed throughout the matrix.

Abstract: Disclosed is an austenite stainless steel comprising: no more than 0.05% by weight of C; no more than 0.25% by weight of Si; no more than 0.40% by weight of Mn; no more than 0.040% by weight of P; no more than 0.003% by weight of S; 30.0 to 40.0% by weight of Ni; 20.0 to 26.0% by weight of Cr; 5.0 to 8.0% by weight of Mo; no more than 0.1% by weight of Al; 0.001 to 0.010% by weight of B; 0.15 to 0.30% by weight of N; and balance of Fe and inevitable impurity. The austenite stainless steel satisfying formula (1) and (2) mentioned below (wherein "Cr", "Mo", "N", "Si" and "Mn" mean content of each element).Cr+3.3Mo+20N.gtoreq.

Abstract: A nickel-base gamma-sigma intermetallic matrix composite material suitable for forming gas turbine engine components and structural coatings for such components. The composite material contains, in weight percent, about 20 to 50 chromium, about 0 to 32 molybdenum, and about 0.5 to 7 silicon, with the balance being nickel and incidental impurities. In addition, the composite material may contain aluminum and titanium in amounts of up to about 7 and 3 weight percent, respectively. The resulting intermetallic matrix composite material is characterized by a sigma volume fraction of greater than 30 percent, preferably at least about 50 percent, and may have a dendritic, fibrous or lamellar microstructure. The composite material can be cast to form a component, or deposited by known techniques to form a structural coating on a component.

Abstract: The invention relates to a high temperature forgeable alloy consisting of<0.05 C<0.5 Si<0.5 Mn8.5 to 11 Al<0.02 P<0.01 S4 to 10 Cr23 to 28 Fe0.025 to 0.2 Hf and/or rare earths and/or Zr<0.5 Ti<0.005 Bresidue nickel and admixtures due to melting. It is used in the production of articles for energy technologies and in the chemical industry. The alloy is resistant to sulphidization, carbonization and oxidation at temperatures between 400.degree. and 1100.degree. C.

Abstract: Nb-base alloys that include Ti, Hf, Cr, Al and Si as alloy constituents have a microstructure that includes a metallic solid solution phase and a mixture of intermetallic silicide phases. The metal silicide phases include an M.sub.3 Si silicide, where M comprises Nb, Ti or Hf, and an M.sub.5 (Si, Al).sub.3 silicide, where M comprises Nb, Ti or Hf. These alloys have mechanical properties such as low temperature fracture toughness, high temperature fracture strength, high temperature stress rupture strength and high temperature creep resistance, that meet or exceed those of certain Ni-base superalloys.

Abstract: The invention relates to a rapidly solidified silicon-based alloy, containing 2-40% by weight Al, 2-45% by weight Ti, 0-10% by weight of one or more of the elements V, Cr, Fe, Mn, Ni, Co, 0-1% by weight of one or more of the elements B, Sr and P, the rest, except for impurities, being silicon in an amount of at least 35% by weight. The invention further relates to a method for producing such alloys where a molten alloy is provided and is solidified at a rate of solidification of at least 10.sup.3 .degree. C./second. Consolidated products are produced from the silicon-based alloy by forming articles from powdered alloy and consolidating the formed articles.

Abstract: A silver/palladium alloy for electrical contact applications comprises, on a weight percent basis, 20-50 silver, 20-50 palladium, 20-40 copper, less than 1.0 nickel, 0.1-5 zinc, 0.01-0.3 boron, and up to 1 percent by weight of modifying elements selected from the group consisting of rhenium, ruthenium, gold, and platinum. The combination of zinc and boron provides an alloy of high strength and hardness and permits the use of lower amounts of both copper and palladium.

Abstract: A nickel-base alloy having characteristics midway between selected stainless steels and INCONEL.RTM. alloy 625LCF.RTM.. Flexible and particularly useful for exhaust system bellows, wires and braids, the alloy includes about 24-42% nickel, about 18-28% chromium, 1.5-6% molybdenum, 0.2-1 % titanium, up to 1% aluminum, the balance iron, and up to about 1.4% silicon. The alloy demonstrates a novel characteristic of becoming stronger and more ductile during contemplated service temperatures of about 800.degree.-1400.degree. F. (427.degree. C.-760.degree. C.).

Abstract: A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1)RNi.sub.x-y M.sub.y (1)(wherein R stands for La, Ce, Pr, Nd, or mixtures thereof, M stands for Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C, or mixtures thereof, x satisfies the formula of 3.5.ltoreq.x<5, and y satisfies the formula of 0<y.ltoreq.2, crystals in the alloy having a LaNi.sub.5 type single phase structure, the alloy including in an amount of not less than 5 volume % and less than 95 volume % thereof crystals each containing not less than 2 and less than 17 antiphase boundaries extending perpendicular to C-axis of a grain of the crystal in the alloy per 20 nm along the C-axis, a method of producing the same, and an anode for a nickel hydrogen rechargeable battery containing as an anode material the above rare earth metal-nickel hydrogen storage alloy and an electrically conductive material.

Abstract: A nickel-based superalloy possessing good mechanical properties when hot regarding traction, creep and cracking resistance has a chemical composition which comprises, in percentages by weight: Co 14.5 to 15.5 ; Cr 12 to 15 ; Mo 2 to 4.5 : Al 2.5 to 4; Ti 4 to 6; Hf not more than 0.5 ; C 100 to 300 ppm; B 100 to 500 ppm; Zr 200 to 700 ppm; possibly W up to 4.5; and nickel as the remainder. Components made from these alloys have an excellent microstructural stability when operating at temperatures up to 800.degree. C.