Abstract: Aluminum wheels include a rim and a disc having a mounting portion. The mounting portion includes an inner mounting face and an outer mounting face. The mounting portion also includes a coarse grain region and a fine grain region. The coarse grain region can be adjacent, and at least partially form, one of the inner mounting face or the outer mounting face. The coarse grain region includes aluminum alloy grains of a first average grain length that is greater than 1 mm. The fine grain region extends between the coarse grain region and the other of the inner mounting face or the outer mounting face. The fine grain region includes aluminum alloy grains of a second average grain length that is less than 0.5 mm.

Abstract: A hot-rolled steel sheet includes a specific chemical composition, and includes a microstructure represented by, in vol %: retained austenite: 2% to 30%; ferrite: 20% to 85%; bainite: 10% to 60%; pearlite: 5% or less; and martensite: 10% or less. A proportion of grains having an intragranular misorientation of 5° to 14° in all grains is 5% to 50% by area ratio, the grain being defined as an area which is surrounded by a boundary having a misorientation of 15° or more and has a circle-equivalent diameter of 0.3 ?m or more.

Abstract: A non-oriented electrical steel sheet includes C: 0 to 0.0050 mass %, Si: 0.50 to 2.70 mass %, Mn: 0.10 to 3.00 mass %, Al: 1.00 to 2.70 mass %, and P: 0.050 to 0.100 mass %. In the non-oriented electrical steel sheet, Al/(Si+Al+0.5×Mn) is 0.50 to 0.83, Si+Al/2+Mn/4+5×P is 1.28 to 3.90, Si+Al+0.5×Mn is 4.0 to 7.0, the ratio of the intensity of {100} plane I{100} to the intensity of {111} plane I{111} is 0.50 to 1.40, the specific resistance is 60.0×10?8 ?·m or higher at room temperature, and the thickness is 0.05 mm to 0.40 mm.

Abstract: Methods for die attachment of multichip and single components including flip chips may involve printing a sintering paste on a substrate or on the back side of a die. Printing may involve stencil printing, screen printing, or a dispensing process. Paste may be printed on the back side of an entire wafer prior to dicing, or on the back side of an individual die. Sintering films may also be fabricated and transferred to a wafer, die or substrate. A post-sintering step may increase throughput.

Abstract: The present invention relates to magnetic single-core nanoparticles, in particular stable dispersible magnetic single-core nanoparticles (e.g. single-core magnetite nanoparticles) having a diameter between 20 and 200 nm in varied morphology, and the continuous aqueous synthesis thereof, in particular using micromixers. The method is simple, quick and cost-effective to perform and is carried out without organic solvents. The single-core nanoparticles produced by the method form stable dispersions in aqueous media, i.e. not having a tendency to assemble or aggregate. In addition, the method offers the possibility of producing anisotropic, super-paramagnetic, plate-shaped nanoparticles which, due to their shape anisotrophy, are extremely suitable for use in polymer matrices for magnet field-controlled release of active substances.

Abstract: The invention relates to a method for work-hardening a crankshaft (4) comprising connecting rod journals (5), main bearing journals (6) and crank webs (7), the connecting rod journals (5) and the main bearing journals (6) being provided with oil holes (31). According to the invention, at least one end (30) of one of the oil holes (31) and/or at least one cylindrical portion (38) of the oil holes (31) is/are work-hardened.

Abstract: A light metal joint filler is provided. The light metal joint filler is formed by uniformly mixing a solvent with a light metal powder and a silver powder, where a powder particle size of the light metal powder is on a micron scale, and a powder particle size of the silver powder is on a nanometer scale or a submicron scale. A metal joining method of the present disclosure includes: coating a joint of two to-be-joined light metal pieces with the light metal joint filler; and hot pressing the two to-be-joined light metal pieces, so that the silver powder is sintered and bonded with the light metal powder and surfaces of the two to-be-joined light metal pieces, and completing joining of the two to-be-joined light metal pieces after the silver powder is condensed.

Abstract: A process of producing an austenitic stainless steel tube comprises the steps of: a) producing an ingot or a continuous casted billet of the austenitic stainless steel, b) hot extruding the ingot or the billet obtained from step a) into a tube, c) cold rolling the tube obtained from step b) to a final dimension thereof. The outer diameter D of the cold rolled tube is 70-250 mm and the thickness t thereof is 6-25 mm, and the cold rolling step is performed such that the following formula is satisfied: (2.5×Rc+1.85×Rh?17.7×Q)=(Rp0.2target+49.3?1073×C?21Cr?7.17×Mo?833.3×N)±Z??(1) wherein Rp0.2target is targeted yield strength and is 750?Rp0.2target?1000 MPa, 30?Rc?75%, 50%?Rh?90%, 1?Q?3.6, and Z is 65.

Abstract: The method for producing a three-dimensional molded object comprises a placing step, a molding step, and an upper surface processing step. The placing step is a step of placing a base plate and a mounting plate within a molding region. A first material powder layer is formed on the base plate; and the base plate is fixed to the mounting plate at a central part of the base plate to an extent that the base plate is not displaced. The molding step is a step of laminating sintered layers to form a sintered body. The sintered layers are laminated by repeatedly spreading material powder to form a material powder layer and irradiating the material powder layer with a beam to form the sintered layer. The upper surface processing step is a step of planarizing an upper surface of the sintered body to form a processed surface.

Abstract: The present invention provides a separation method of a rare earth element and iron including: forming alkali silicate slag incorporating a rare earth element, by melting a rare earth-iron-containing material together with an alkali silicate flux in a metallic silicon melt or an iron-silicon alloy melt; and separating rare earth-containing slag from an iron-silicon alloy, in which volatilization of alkaline components contained in the flux is suppressed by performing heating and melting under an oxidizing atmosphere, and the rare earth-containing slag having a SiO2/Na2O molar ratio of 2.1 or less is formed.

Abstract: Disclosed is a method for preparing vanadium or vanadium alloy powder from a vanadium-containing raw material through a shortened process, including: calcinating a mixture of a vanadium-containing raw material and an alkali compound for oxidation to form a water-soluble vanadate; purifying the vanadate followed by vanadium precipitation to produce an intermediate CaV2O6 with high purity; dissolving CaV2O6 in a molten-salt medium together with other raw materials to form a uniform reaction system; and introducing a reducing agent to the system followed by separation, washing and drying to produce vanadium or vanadium alloy powder having a particle size of 50-800 nm and a purity of 99.0 wt % or more. The method can continuously process vanadium-containing raw materials to prepare vanadium or vanadium alloy powder.

Abstract: A method of producing a three-dimensionally shaped object includes a step of equipping an additive manufacturing apparatus with a plate, a step of forming a support portion by depositing raw material powder on the plate and radiating light, a step of forming a three-dimensionally shaped object by depositing raw material powder on the support portion and radiating light, and a step of separating the three-dimensionally shaped object from the support portion. In the step of forming the support portion, a low-density support portion and a high-density support portion are formed. The low-density support portion has a lower density than a three-dimensionally shaped portion formed in the step of forming the three-dimensionally shaped object. The high-density support portion has a higher density than the low-density support portion.

Abstract: A method of forming an article including: contacting a fugitive tool with a powdered parent material; densifying the powdered material; and destructively removing the fugitive tool. A coating of a different material may be formed against the parent material using a similar approach.

Abstract: The invention relates to a steel sheet for tool, and method for manufacturing thereof. An embodiment of the present invention is a steel sheet for a tool comprising 0.4 to 0.6 wt % of C, 0.05 to 0.5 wt % of Si, 0.1 to 1.5 wt % of Mn, 0.05 to 0.5 wt % of V, 0.1 to 2.0 wt % of at least of one or two components selected from the group comprising Ni, Cr, Mo, and combinations thereof, and the balance of Fe and inevitable impurities, with respect to 100 wt % of the total steel sheet, and provides a steel sheet for a tool of which the deviation of Rockwell hardness by the position in the width direction is within 5 HRC, and the ratio of those having a wave height in the longitudinal direction within 20 cm is 90% or more with respect to the wave height per 1 m of the steel sheet comprising the central portion in the longitudinal direction of the steel sheet for a tool.

Abstract: Three dimensional “green” parts are formed by combining sheet layers comprising metal powder bound together by a polymer. The “green” parts are then sintered to drive off the polymer and consolidate the metal powder to produce a monolithic metal part. Particularly, the invention is directed to processes for forming and stacking the shaped sheet layers that are readily automated and preserve the high value powder metal and polymer sheet trim scrap for reuse resulting in an additive overall process with little material waste. The invention includes processes in which “green” elements formed by methods such as three dimensional printing are incorporated into the “green” stack and become an integral part of the final sintered part. It further includes processes in which “green” sheet layers are shaped by methods such as hot bending or vacuum forming to provide three dimensional part features.

Abstract: Methods for the fabrication of metal strain wave gear flexsplines using a specialized metal additive manufacturing technique are provided. The method allows the entire flexspline to be metal printed, including all the components: the output surface with mating features, the thin wall of the cup, and the teeth integral to the flexspline. The flexspline may be used directly upon removal from the building tray.

Abstract: In the production of a grain-oriented electrical steel sheet by hot rolling a slab containing Si: 2.0-8.0 mass % and no inhibitor-forming ingredients, cold rolling, subjecting to a decarburization annealing, applying an annealing separator composed mainly of MgO and containing a Ti compound(s) and subjecting to a finish annealing, an atmosphere in the heating process of the decarburization annealing is rendered into a dry atmosphere having a dew point of not higher than 0° C. and a Ti amount (Ti(a)) and a N amount (N(a)) contained in an iron matrix after the removal of a forsterite coating and a Ti amount (Ti(b)) and a N amount (N(b)) contained in the steel sheet having a forsterite coating are made to satisfy relationships as N(b)?0.0050 mass %, N(b)/N(a)?4, and Ti(b)/Ti(a)?4.

Abstract: Provided is a low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness, which comprises: 0.05%-0.11% of C, 0.10%-0.40% of Si, 1.60%-2.20% of Mn, S?0.003%, 0.20-0.70% of Cr, 0.20%-0.80% of Mo, 0.02%-0.06% of Nb, 3.60%-5.50% of Ni, 0.01%-0.05% of Ti, 0.01%-0.08% of Al, 0<N?0.0060%, 0<O?0.0040%, and 0<Ca?0.0045%, with the balance being Fe and inevitable impurities; in addition, Ni+Mn?5.5 is also satisfied. The manufacturing method for the above-mentioned steel plate comprises smelting, casting, heating, two-stage rolling, quenching, cooling after quenching, and tempering.

Abstract: A process for reducing arsenic content from arsenic-bearing gold concentrate or other arsenic-bearing gold materials to produce a low arsenic-bearing gold concentrate. The process may comprise adding oxygen, water, and/or acid to an acidulated arsenic-bearing gold concentrate slurry and reacting them together in an autoclave at an elevated pressure and temperature in a pressure oxidation step. In one or more examples, the process may further comprise processing the oxidized concentrate slurry in an arsenic re-dissolution step to dissolve unstable solid arsenic compounds, and applying a first solid/liquid separation and wash step to form a first washed slurry/solid and first acid-containing solutions. The process may further comprise reacting the first washed slurry/solid with sulfur dioxide in a reductive leach step, and applying a second solid/liquid separation and wash step to form a second washed slurry/solid and second acid-containing solutions.

Abstract: The present disclosure relates to a system for forming an arcuate component by additive layer manufacturing (ALM). The system comprises a base plate for receiving a layer of powdered material and having opposing inner and outer transverse edges and an energy beam source for generating an energy beam for fusing a portion of the powdered material. The base plate is moveable away from the energy beam source from a first position to a vertically lower second position along an arcuate path such that the outer transverse edge traces an outer arc having a greater radius than an inner arc traced by the inner transverse edge. The present disclosure also relates to a base plate apparatus for use in ALM that is movable along an arcuate path and an ALM method using the base plate apparatus/system.