Abstract: Processes for forming an article from an ?+? titanium alloy are disclosed. The ?+? titanium alloy includes, in weight percentages, from 2.90 to 5.00 aluminum, from 2.00 to 3.00 vanadium, from 0.40 to 2.00 iron, and from 0.10 to 0.30 oxygen. The ?+? titanium alloy is cold worked at a temperature in the range of ambient temperature to 500° F., and then aged at a temperature in the range of 700° F. to 1200° F.

Abstract: A high-Si content austenitic stainless steel, which exhibits stable acid resistance and excellent corrosion resistance in high-temperature and concentrated nitric acid, has a chemical composition comprising: C: at most 0.04%; Si: 2.5-7.0%; Mn: at most 10%; P at most 0.03%; S: at most 0.03%; N: at most 0.035%; sol. Al: at most 0.03%; Cr: 7-20%; Ni: 10-22%; optionally, one or more types selected from Nb, Ti, Ta and Zr: 0.05-0.7% in total; and the remainder being Fe and impurities, wherein a total amount of B1 type inclusions measured by a method according to JIS G0555 (2003) Annex 1 “Microscopic Testing for the Non-Metallic Inclusions on the Point Counting Principle” is not more than 0.03% by area %.

Abstract: A method of making a selectively corrodible article is disclosed. The method includes forming a powder comprising a plurality of metallic powder particles, each metallic powder particle comprising a nanoscale metallic coating layer disposed on a particle core. The method also includes forming a powder compact of the powder particles, wherein the powder particles are substantially elongated in a predetermined direction to form substantially elongated powder particles. In one embodiment, forming the powder compact includes compacting the powder particles into a billet, and forming the billet to provide the powder compact of the powder particles, wherein the powder particles are substantially elongated in a predetermined direction to form substantially elongated powder particles.

Abstract: A method of processing a superalloy powder includes mechanically alloying nitrogen with superalloy powder particles having at least one nitride-forming element such that each superalloy powder particle includes a microstructure having nitrogen dispersed throughout the microstructure. The powder may then be formed into an article having nitride regions dispersed throughout.

Abstract: An austenitic steel sheet excellent in resistance to delayed cracking, the composition of said steel comprising, in weight: 0,35%<C<1,05%, 15%<Mn<26%, Si<3%, Al<0,050%, S<0,030%, P<0,080%, N<0,1%, at least one metallic element X chosen among vanadium, titanium, niobium, molybdenum, chromium: 0,050%<V<0,50%, 0,040%?Ti<0,50%, 0,070%<Nb<0,50%, 0,14%<Mo<2%, 0,070%<Cr<2% and optionally, one or several elements chosen among 0,0005%<B<0,010%, Ni<2%, Cu<5%, the remainder being iron and unavoidable impurities inherent to fabrication, including hydrogen, the quantity Xp of said at least one metallic element under the form of carbides, nitrides or carbonitrides being, in weight: 0,030%<VP<0,40%, 0,030%<Tip<0,50%, 0,040%<Nbp<0,40%, 0,14%<Mop<0,44%, 0,070%<Crp<0,6%, the hydrogen content Hmax designating the maximal hydrogen content that can be measured from a series of at least five specimens, and the quantity Xp, in weight, be

Abstract: The object of this application defines a new alloy which presents at the same time the mechanical and physical properties of the gray iron alloy, i.e., excellent machinability, damping vibration, thermal conductivity, low shrink tendency and good microstructure stability, together with a wide interface range of the CGI tensile strength.

Abstract: A steel sheet including C at 0.05 to 0.15%, Si at 0.2 to 1.2%, Mn at 1.0 to 2.0%, P at not more than 0.04%, S at not more than 0.0030%, Al at 0.005 to 0.10%, N at not more than 0.005% and Ti at 0.03 to 0.13%, the balance being Fe and inevitable impurities, includes surface regions having an area fraction of bainite of less than 80% and an area fraction of a ferrite phase with a grain diameter of 2 to 15 ?m of not less than 10%, the surface regions extending from both surfaces of the steel sheet each to a depth of 1.5 to 3.0% relative to a total sheet thickness, as well as an inner region other than the surface regions having an area fraction of a bainite phase of more than 95%, and has a tensile strength of not less than 780 MPa.

Abstract: A high strength thin steel sheet that is mainly used for structural members and inner and outer panels for a vehicle, a galvanized steel sheet, and methods of manufacturing the same. The high strength thin steel sheet for superior press formability includes, by weight percent, 0.06 to 0.4% C, 1.0 to 5.0% Mn, 0.05 to 2.5% Si, 0.01 to 2.0% Ni, 0.02 to 2% Cu, 0.01 to 0.04% Ti, 0.05 to 2.5% Al, 0.005 to 0.1% Sb, 0.0005 to 0.004% B, 0.007% or less N, and balance Fe and inevitable impurities, and meeting relation of Ni+0.5×Mn+0.3×Cu>0.9, which is defined as Ni*, and Al/Ni*<1.3 at a same time, and relation of Ti?0.028×Al. This thin steel sheet is galvanized or galvannealed.

Abstract: The invention relates to the hardening of the surface layer of parts of machines, plants and apparatuses and also tools. Objects for which the application is possible and advantageous are components which are subjected to severe fatigue or wear stresses and are composed of hardenable steels and have a complicated shape and whose surface has to be hardened selectively on the functional surfaces or whose functional surface has a multidimensional shape. The process for hardening the surface layer of components having a complicated shape is carried out by means of a plurality of energy input zones.

Abstract: A component, designed so that the longitudinal grain which experiences the greatest stress has a larger grain width than the other grains, is provided. This longitudinal grain is usually on the edge of the component. The component includes longitudinal grains that are directionally solidified in a rod-crystalline form along the longitudinal axis of the component.

Abstract: A method for heat-treating a ring-shaped member includes the steps of: forming, by relatively rotating an coil along the circumferential direction of the formed body, an annular heated region in the formed body, the heated region having the steel austenitized therein; and simultaneously cooling a whole of the heated region to a temperature of not more than an Ms point. In the step of forming the heated region, the heating is performed to repeatedly change over for a plurality of times between a state in which each region of the rolling contact surface has a temperature exceeding a temperature of an A1 point and a state in which each region of the rolling contact surface has a temperature that is less than the temperature of the A1 point and that maintains a supercooled austenite state.

Abstract: A method is provided for manufacturing a turbine component. The method includes forming a first intermediate turbine article with an additive manufacturing process; encapsulating the first intermediate turbine article with an encapsulation layer to form a second intermediate turbine article; and consolidating the second intermediate turbine article to produce the turbine component.

Abstract: Precipitation-hardened, martensitic, cast stainless steel having a composition comprising, by mass, 0.08-0.18% of C, 1.5% or less of Si, 2.0% or less of Mn, 0.005-0.4% of S, 13.5-16.5% of Cr, 3.0-5.5% of Ni, 0.5-2.8% of Cu, 1.0-2.0% of Nb, and 0.12% or less of N, the amounts of C, N and Nb meeting the condition of ?0.2?9 (C %+0.86N %)?Nb %?1.0, the rest being Fe and inevitable impurities, and having a structure in which Cu precipitates having an average particle size of 0.1-0.4 ?m are dispersed in a tempered-martensite-based matrix.

Abstract: The fatigue resistance characteristics, particularly, fatigue resistance characteristics after retention at 150° C. for 1000 hours are improved while maintaining the characteristics in the related art. Provided is a copper alloy sheet having a composition containing 0.2% by mass to 1.2% by mass of Mg, and 0.001% by mass to 0.2% by mass of P, the balance being Cu and unavoidable impurities. When X-ray diffraction intensity of a {110} crystal plane is set as I{110}, and X-ray diffraction intensity of {110} crystal plane of a pure copper standard powder is set as I0{110}, a surface crystal orientation of the copper alloy sheet satisfies a relation of 4.0?I{110}/I0{110}?6.0.

Abstract: Processes for fabricating components to have two or more regions with different grain structures, and components produced by such processes. The processes entail performing at least one forging step on a preform to produce a profile having at least a first portion corresponding to the first region of the component. The preform is formed of a precipitation-strengthened alloy having a solvus temperature, and the at least one forging step comprises a nonfinal forging step performed at a first strain rate and at a first subsolvus temperature that is below the solvus temperature of the alloy. A subsequent forging step is performed on the profile to produce a final profile comprising the first portion and a second portion corresponding to the second region of the component.

Abstract: The present invention provides a high-temperature lead-free solder alloy which has no variation in strength of the soldered portion and has an excellent balance between strength and soldering properties, and a method for producing the alloy. The present invention relates to a lead-free jointing material made of an alloy of two elements A and B selected from elements other than Pb, wherein the element A has a melting point higher than a melting point of the element B, wherein the alloy is an alloy which has a room-temperature stable phase composed of the element B and a room-temperature stable phase AmBn composed of the elements A and B (provided that m and n are specific numerals in accordance with an alloy constituting a stable phase at room temperature) and satisfies AxB1-x (provided that 0<x<m(m+n)), and wherein the element A is supersaturatedly dissolved in the room-temperature stable phase composed of the element B.

Abstract: A method for the production of iron from an iron oxide-containing material includes contacting an iron oxide-containing material with a particle size distribution range with a ?90 of less than 2 mm, with a carbon-containing material with a particle size distribution range with a ?90 of less than 6 mm, in a commercial scale reactor at a temperature of between 900° C. and 1200° C. for a contact time sufficient to reduce the iron oxide to iron.

Abstract: Disclosed herein is a high-strength transmission gear, manufactured by gas-nitriding a nitriding steel having a composition including iron (Fe) as a main component, 0.25˜0.40 wt % of carbon (C), 0.50˜1.0 wt % of manganese (Mn), 2.0˜3.0 wt % of chromium (Cr), 0.3˜1.0 wt % of molybdenum (Mo), 0.2˜0.7 wt % of copper (Cu), 0.03˜0.1 wt % of niobium (Nb), 0.03˜0.1 wt % of aluminum (Al), 0.05˜0.15 wt % of vanadium (V), 0.001˜0.005 wt % of boron (B) and other inevitable impurities. More specifically, while gas-nitriding of the nitriding steel, the temperature is increased in steps, and the ratio of nitrogen gas in the nitriding steel is decreased in steps.

Abstract: Provided are a powder for a magnet, which provides a rare-earth magnet having excellent magnet properties and which has excellent formability, a method for producing the powder for a magnet, a powder compact, a rare-earth-iron-based alloy material, and a rare-earth-iron-nitrogen-based alloy material which are used as materials for the magnet, and methods for producing the powder compact and these alloy materials.

Abstract: Described herein is a method that can be used for heat treating a metal in at least one of the following processes: carburizing, carbonitriding, nitrocarburizing, and neutral carbon potential annealing operations that are used in a 1 atmosphere pressure furnace and in an atmosphere that is oxygen free and comprises nitrogen and at least one hydrocarbon.