Abstract: Disclosed are a high-boron high-vanadium high-speed steel and a method for preparing the same. Pig iron, scrap steel, ferrochromium, ferromanganese, ferroboron, ferrovanadium, industrial pure iron, ferromolybdenum, ferrotungsten, ferrosilicon and ferrotitanium are subjected to smelting at 1580-1600° C. and refining to obtain a liquid steel. The liquid steel is subjected to superheating, and directional solidification at a casting temperature of 1420-1430° C., and cooled to room temperature to obtain the directionally solidified high-speed steel.

Abstract: An irradiation device of a lamination molding apparatus includes: at least one laser source, generating a laser beam; a first galvano scanner, scanning the laser beam; a second galvano scanner, scanning the laser beam; and an irradiation controller, controlling the laser source, the first galvano scanner, and the second galvano scanner. Irradiable ranges of the laser beams by using the first galvano scanner and the second galvano scanner respectively include an entire of a molding region. A first X-axis galvano mirror and a first Y-axis galvano mirror of the first galvano scanner and a second X-axis galvano mirror and a second Y-axis galvano mirror of the second galvano scanner are disposed to be plane-symmetric to each other.

Abstract: A method for producing a component may include one or more of the following: providing and/or producing a profiled structural part, the structural part including a predetermined profile along its length; heat treating the profiled structural part; and press hardening the profiled structural part in a press-hardening tool. The profiled structural part in the press-hardening tool may be cooled in an interior thereof by circulating air, where during cooling of the profiled structural part in the press-hardening tool, different material properties are specifically set in at least two regions of the profiled structural part.

Abstract: A fluid flow apparatus configured to provide a flow of fluid with particular flow profiles to a process chamber of an additive manufacturing apparatus is provided. The fluid flow apparatus includes a plurality of openings forming a first flow region, a second flow region, a third flow region, and a fourth flow region in adjacent arrangement along an axis in the process chamber between the build platform and the laser window. A controller is configured to execute instructions that perform operations that include flowing, via the second flow region, the flow of fluid along a second distance along the axis at a second velocity range between approximately 1.0 meters per second (m/s) and 6.0 m/s, and flowing, via the fourth flow region, another flow of fluid along a fourth distance along the axis at a fourth velocity range between approximately 0.1 m/s and 4.5 m/s.

Abstract: Provided are a high-strength magnesium alloy profile, a preparation process therefor and the use thereof, wherein same relate to the technical field of the formation of high-strength magnesium alloys. A strengthening phase of the high-strength magnesium alloy profile in an extrusion state mainly comprises LPSO phase and ? phase, wherein the volume fraction of LPSO phase is 1-40%; and the volume fraction of ? phase is 1-20%. A strengthening phase of the high-strength magnesium alloy profile in an aging state mainly comprises LPSO phase, ? phase, ?? phase and ?? phase, wherein the volume fraction of LPSO phase is 1-40%; the volume fraction of ? phase is 1-20%; the number density of ?? phase is 1015-1025 m?3, and the length to thickness ratio l/d thereof is 1:20; and the number density of ?? phase is 1014-1024 m?3 and the length to thickness ratio l/d thereof is 1:50.

Abstract: The present invention relates to steel used for a sash component and the like of a vehicle and, more specifically, to a hot-rolled steel sheet for a high-strength electric resistance welded steel pipe having excellent expandability and a method for manufacturing same, the hot-rolled steel sheet having a smaller decrease in the strength of a welding heat-affected zone (HAZ) formed during electric resistance welding, in comparison with a base material.

Abstract: The present disclosure generally relates to methods and apparatuses for chemical vapor deposition (CVD) during additive manufacturing (AM) processes. Such methods and apparatuses can be used to embed chemical signatures into manufactured objects, and such embedded chemical signatures may find use in anti-counterfeiting operations and in manufacture of objects with multiple materials.

Abstract: A method for making an aluminum alloy includes steps of (1) weighing out starting materials to achieve a mass of material having a composition that includes aluminum, about 1.8 to about 5.6 percent by weight copper, about 0.6 to about 2.6 percent by weight lithium, and at least one of lanthanum up to about 1.5 percent by weight, strontium up to about 1.5 percent by weight, cerium up to about 1.5 percent by weight, and praseodymium up to about 1.5 percent by weight; (2) loading said starting materials into a crucible; (3) inserting said crucible into a chamber; (4) evacuating said chamber to a predetermined vacuum level; (5) melting said starting materials to form a molten mass; and (6) casting said molten mass into a mold.

Abstract: A method for producing a coated steel sheet having a tensile strength TS of at least 1100 MPa, a total elongation TE according to ISO standard 6892-1 of at least 12%, the product TSxTE of the tensile strength by the total elongation being at least 14200 MPa %, and a hole expansion ratio HER according to ISO standard 16630:2009 of at least 25%, the method including the following successive steps: providing a cold-rolled steel sheet, the chemical composition of the steel containing in weight %: 0.15%?C?0.23%, 2.0%?Mn?2.7%, with C+Mn/10?0.420%, 0?Cr?0.40%, with Mn+Cr?2.25%, 0.2%?Si?1.6%, 0.02%?Al?1.2%, with 1.0%?Si+Al?2.2%, 0?Nb?0.035%, 0?Mo?0.1%, the remainder being Fe and unavoidable impurities, annealing the steel sheet at an annealing temperature TA so as to obtain a structure comprising at least 65% of austenite and at most 35% of intercritical ferrite, quenching the sheet from a temperature of at least 600° C. at a cooling rate comprised between 20° C./s and 50° C.

Abstract: A bonding member that includes a resin body defining an airtight interior, and a bonding material enclosed in the interior of the resin body. The bonding material is a mixed powder that includes a plurality of particles of a first metal powder and a plurality of particles of a second metal powder. The second metal powder reacts with the first metal powder when melted to thereby produce an intermetallic compound. The resin body has a melting point higher than a softening point of the mixed powder.

Abstract: This soft magnetic powder is represented by composition formula FeaSibBcPdCue with the exception of unavoidable impurities. In the composition formula, a, b, c, d and e satisfy 79?a?84.5 at %, 0?b<6 at %, 4?c?10 at %, 4<d?11 at %, 0.2?e<0.4 at %, and a+b+c+d+e=100 at %.

Abstract: Provided is an austenitic alloy pipe, which has high yield strength, excellent SCC resistance, suppressed strength anisotropy, and high detectability in ultrasonic flaw detection. The austenitic alloy pipe according to the present embodiment has a chemical composition consisting of: in mass %, C: 0.004 to 0.030%, Si: 1.00% or less, Mn: 0.30 to 2.00%, P: 0.030 or less, S: 0.0020% or less, Al: 0.001 to 0.100%, Cu: 0.50 to 1.50%, Ni: 25.00 to 55.00%, Cr: 20.00 to 30.00%, Mo: 2.00 to 10.00%, and N: 0.005 to 0.100%, with the balance being Fe and impurities. A grain size number of austenite crystal grain is 2.0 to 7.0 and a mixed grain ratio is not more than 5%. Tensile YS is not less than 758 MPa, compressive YS/tensile YS is 0.85 to 1.10, and an outer diameter is not less than 170 mm.

Abstract: A double oriented electrical steel sheet includes: 2.0 to 6.0% of Si, 0.0005 to 0.04% of Al, 0.0001 to 0.003% of S, 0.02 to 1.0% of Mn, equal to or less than 0.003% of N, excluding 0%, equal to or less than 0.01% of C, excluding 0%, equal to or less than 0.01% of Ti excluding 0%, 0.005 to 0.10% of P as wt %, and a remainder including Fe and inevitable impurities. Such a double oriented electrical steel sheet satisfies Formula 1: [Mn]/[S]?60,??[Formula 1] where, [Mn] and [S] are contents (wt %) of Mn and S, respectively.

Abstract: An additive manufacturing method includes cold spraying a powder onto a build area to create a densified powder layer. The method can include high speed machining the densified powder layer after cold spraying to create a smooth layer.

Abstract: A three-dimensional object may be manufactured using a powder bed fusion additive manufacturing technique. A layer of powder feed material may be distributed over a solid substrate and scanned with a high-energy laser beam to locally melt selective regions of the layer and form a pool of molten feed material. The pool of molten feed material may be exposed to gaseous nitrogen, carbon, or boron to respectively dissolve nitride, carbide, or boride ions into the pool of molten feed material to produce a molten nitrogen, carbon, or boron-containing solution. The molten nitrogen, carbon, or boron-containing solution may cool and solidify into a solid layer of fused nitride, carbide, or boride-containing material.

Abstract: Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is locally melted and then solidified, characterised in that the mixture of powders comprises: first particles comprising at least 80% by mass of aluminium and up to 20% by mass of one or more additional elements, and second yttria-stabilized zirconia particles, the mixture of powders comprising at least 1.5% by volume of second particles.

Abstract: Some variations provide a system for producing a functionalized powder, comprising: an agitated pressure vessel; first particles and second particles contained within the agitated pressure vessel; a fluid contained within the agitated pressure vessel; an exhaust line for releasing the fluid from the agitated pressure vessel; and a means for recovering a functionalized powder containing the second particles disposed onto surfaces of the first particles. A preferred fluid is carbon dioxide in liquefied or supercritical form. The carbon dioxide may be initially loaded into the pressure vessel as solid carbon dioxide. The pressure vessel may be batch or continuous and is operated under reaction conditions to functionalize the first particles with the second particles, thereby producing a functionalized powder, such as nanofunctionalized metal particles in which nanoparticles act as grain refiners for a component ultimately produced from the nanofunctionalized metal particles.

Abstract: Disclosed herein is a light-gauge, ultra-high strength weathering steel sheet with a composition, material properties, and surface characteristics that make it suitable for hot-stamping applications and making hot-stamped products. Also disclosed herein is a high friction rolled carbon alloy steel strip free of prior austenite grain boundary depressions and having a smear pattern. Still further disclosed herein is a high friction rolled carbon alloy steel strip that has been surface homogenized to provide a thin cast steel strip free of a smear pattern.

Abstract: A martensitic stainless steel seamless pipe for oil country tubular goods having a yield stress of 758 MPa or more, and excellent sulfide stress corrosion cracking resistance, and a method for manufacturing the same. The martensitic stainless steel seamless pipe has a composition that contains, by mass %, C: 0.010% or more, Si: 0.5% or less, Mn: 0.05 to 0.50%, P: 0.030% or less, S: 0.005% or less, Ni: 4.6 to 8.0%, Cr: 10.0 to 14.0%, Mo: 1.0 to 2.7%, Al: 0.1% or less, V: 0.005 to 0.2%, N: 0.1% or less, Ti: 0.255 to 0.500%, Cu: 0.01 to 1.0%, Co: 0.01 to 1.0%, and the balance being Fe and incidental impurities. C, Mn, Cr, Cu, Ni, Mo, W, Nb, N, and Ti satisfy a predetermined relationship.

Abstract: The present disclosure is drawn to a three-dimensional printing system can include a powder bed material, including from 80 wt % to 100 wt % metal particles having a D50 particle size distribution value ranging from 5 ?m to 75 ?m and a powder bed support substrate for receiving the powder bed material. The system can also include a fluid ejector operable to digitally deposit a thermally sensitive binder fluid onto a selected portion of the powder bed material on the powder bed support substrate. The thermally sensitive binder fluid can include water, a reducible metal compound, and a thermally activated reducing agent. A light source can also be present to generate a pulse energy sufficient to cause the thermally activated reducing agent to reduce the reducible metal compound and bind metal particles together to form a green three-dimensional part.