Abstract: A system and a corresponding method of correcting temperature data from a non-imaging optical sensor involve collecting temperature data generated using the optical sensor. The temperature data describes temperature changes across a surface of a material during an additive manufacturing operation in which the material is heated by a heat source. The method includes estimating a size of a hot spot corresponding to a hottest region formed on the surface by the heat source; and estimating a size of a heated region corresponding to a locus of points within the field of view that contribute to the temperature data. The method further includes correcting the temperature data based on the estimated sizes of the hot spot and the heated region.

Abstract: The present invention relates to a rack steel plate with a thickness up to 177.8 mm by a continuous casting slab, the constituents and mass percentages including C0.11˜0.15%, Si0.15˜0.35%, Mn0.95˜1.25%, P?0.010%, S?0.002%, Cr0.45˜0.75%, Mo0.4˜0.6%, Ni1.3˜2.6%, Cu0.2˜0.4%, Al0.06˜0.09%, V0.03˜0.06%, Nb?0.04%, N?0.006%, B0.001˜0.002%, the balance is Fe and unavoidable impurity elements. The manufacture method includes, in sequence, KR molten steel pretreatment, converter smelting, LF refining, RH refining, continuous casting through a straight-arc continuous casting machine, shielding the continuous casting slab a cover and slowly cooling, cleaning the continuous casting slab, heating, high-pressure water descaling, control rolling, straightening, slowly cooling, quenching and tempering treatment.

Abstract: Processes for producing low-nitrogen metallic chromium or chromium-containing alloys, which prevent the nitrogen in the surrounding atmosphere from being carried into the melt and being absorbed by the metallic chromium or chromium-containing alloy during the metallothermic reaction, include vacuum-degassing a thermite mixture comprising metal compounds and metallic reducing powders contained within a vacuum vessel, igniting the thermite mixture to effect reduction of the metal compounds within the vessel under reduced pressure i.e., below 1 bar, and conducting the entire reduction reaction in said vessel under reduced pressure, including solidification and cooling, to produce a final product with a nitrogen content below 10 ppm. The final products obtained, in addition to low-nitrogen metallic chromium in combination with other elements, can be used as raw materials in the manufacture of superalloys, stainless steel and other specialty steels whose final content of nitrogen is below 10 ppm.

Abstract: A multi-track laser beam process for surface hardening a low-carbon and low manganese steel. The process includes providing cold rolled close annealed (CRCA) steel sheets having in weight percentage, C: 0.03-0.07, Mn: 0.15-0.25 or 1.4, S: 0.005-0.009, P: 0.009-0.014, Si: 0.005-0.02, Al: 0.04, V: 0.001, Nb: 0.001, and Ti: 0.002 and heating the surface of the steel sheet to an austenizing temperature using a multi-track laser beam, where, upon cooling, phase transformation of the initial microstructure to a harder dual phase structure occurs. The surface temperature of the steel sheet may be controlled based on a comparison of the on-line surface temperature effect with pre-stored data representing the desired surface temperature effect to eliminate any possibility of melting the sheet. The development of the desired microstructure of the sheet, including measurement of the hardness level and the fraction of different phases, may be periodically reviewed.

Abstract: The present invention disclosed a method of producing a three-dimensional porous tissue in-growth structure. The method includes the steps of depositing a first layer of metal powder and scanning the first layer of metal powder with a laser beam to form a portion of a plurality of predetermined unit cells. Depositing at least one additional layer of metal powder onto a previous layer and repeating the step of scanning a laser beam for at least one of the additional layers in order to continuing forming the predetermined unit cells. The method further includes continuing the depositing and scanning steps to form a medical implant.

Abstract: A galvanized dual phase steel sheet with a martensite phase and a ferrite phase and a composition containing within the following ranges by weight: carbon from about 0.01% to about 0.18%; manganese from about 0.2% to about 3%; silicon?about 1.2%; aluminum from about 0.01% to about 0.1%; one or both of chromium and nickel from about 0.1% to about 3.5%; calcium from about 0.0003% to about 0.01%; phosphorus?about 0.1%; sulfur?about 0.03%; nitrogen?about 0.02%; molybdenum?about 1%; one or more of niobium and titanium?about 1%; and boron?about 0.006% by weight; and with the balance of the composition being iron and incidental ingredients. The steel sheet may be both galvanized and galvannealed.

Abstract: The present invention relates to pressure vessel steel to be used in a hydrogen sulfide atmosphere, and relates to pressure vessel steel having excellent resistance to hydrogen induced cracking (HIC), and a manufacturing method therefor.

Abstract: Disclosed is a non-oriented electrical steel sheet low in iron loss that is substantially free of Al and contains large amounts of Si and Mn. The disclosed non-oriented electrical steel sheet has a chemical composition containing C: 0.0050% or less, Si: 2.0% to 6.0%, Mn: 1.0% to 3.0%, P: 0.20% or less, S: 0.0050% or less, N: 0.0050% or less, and Al: 0.0050 % or less, with the balance being Fe and inevitable impurities, in which Si—Mn nitrides having an average diameter of 50 nm to 500 nm has a number density of 1/?m3 or less.

Abstract: A system includes a layered structure. The layered structure includes first and second coalesced layers and an intermediate layer disposed between the first and second coalesced layers. The first and second coalesced layers have a higher degree of coalescence than the intermediate layer.

Abstract: A process for forming a metal part from an additive manufacturing process with a smooth surface that includes the steps of printing the part using an AM process, heating the printed part to its solution heat treat or annealing temperature, placing the printed part in a fluidized salt bath for a short period of time to smooth a rough surface on the metal part, and then rapidly cool the heated metal part to prevent any change in grain structure. If the metal part is made from a metal material that oxidizes, then the metal part is treated in an enclosed chamber with Argon gas.

Abstract: A method of making a pre-sintered preform, including forming a pre-sintered preform by a binder jet additive manufacturing technique. The binder jet additive manufacturing technique includes depositing a first powder layer including a first powder and a second powder followed by depositing a first binder at a pre-determined location of the first powder layer. The binder jet additive manufacturing technique also includes depositing a second powder layer over at least a portion of the first powder layer followed by depositing a second binder at a pre-determined location of the second powder layer. At least a portion of the first binder and at least a portion of the second binder is cured forming a green part. The green part is then densified to form a pre-sintered preform near net shape component.

Abstract: A nickel-base superalloy includes essentially, by weight: 14.75 to 26.5 percent cobalt, 4.1 to 4.65 percent aluminium, 1.1 to 1.9 percent titanium, 3.85 to 6.3 percent tantalum, 1.2 to 2.55 percent niobium, up to 0.07 percent boron, up to 0.06 percent carbon, up to 14.0 percent chromium, up to 1.0 percent iron, up to 1.0 percent manganese, up to 4.2 percent molybdenum, up to 0.5 percent silicon, up to 4.9 percent tungsten, and up to 0.1 percent zirconium, the balance being nickel and incidental impurities; wherein the overall concentration in the alloy of aluminium, titanium, tantalum, and niobium is from 13 to 14 atomic percent and the atomic ratio of aluminium to titanium is from 4.625:1 to 6.333:1.

Abstract: A high strength steel sheet having a high Young's modulus, the steel sheet having a chemical composition including, by mass %, C: 0.060% or more and 0.150% or less, Si: 0.50% or more and 2.20% or less, Mn: 1.00% or more and 3.00% or less, and one or both of Ti: 0.001% or more and 0.200% or less and Nb: 0.001% or more and 0.200% or less, in which the contents of C, N, S, Ti, and Nb satisfy the equation 500?C*?1300. The steel sheet has a microstructure including ferrite in an amount of 20% or more and martensite in an amount of 5% or more, in terms of area ratio, such that the average grain size of the ferrite is 20.0 ?m or less and the inverse intensity ratio of ?-fiber for ?-fiber is 1.00 or more in the ferrite and the martensite.

Abstract: A method of making a rare earth magnet containing zero heavy rare earth elements includes a step of mixing the fine grain powder with the lubricant having a weight content of at least 0.03 wt. % and no greater than 0.2 wt. % for a period of between 1 and 2 hours. The step of pulverizing is further defined as jet milling the alloy powder with the lubricant using a carrier gas of argon or nitrogen. The method further includes a step of controlling oxygen content during the steps of melting, forming, disintegrating, mixing, pulverizing, molding, and sintering whereby the impurities including Carbon (C), Oxygen (O), and Nitrogen (N) satisfies 1.2C+0.6O+N?2800 ppm. A rare earth magnet composition including C, O, and N whereby C, O, and N satisfies 1.2C+0.6O+N?2800 ppm and has zero heavy rare earth elements.

Abstract: A method can produce a thermoelectric component or at least a semifinished version of the thermoelectric component. The method includes: a) providing a substantially planar substrate; b) providing a pulverulent thermoelectrically active material; c) pressing the active material to form green bodies; d) inserting green bodies into through-holes of the substrate; e) arranging the substrate with the green bodies inserted therein between two substantially planar electrodes; f) contacting face ends of the green bodies with the electrodes; g) exposing the green bodies to an electric current flowing between the electrodes; h) exposing the green bodies to a pressure force acting between the electrodes; i) sintering the green bodies to form thermolegs; and k) levelling the substrate and the thermolegs accommodated therein by bringing them closer to the electrodes while maintaining the parallelity thereof.

Abstract: A cemented carbide body is provided with improved resistance to mechanical fatigue. The cemented carbide body comprises tantalum in the binder matrix material. The tantalum content is between 1.5 weight per cent and 3.5 weight per cent of the binder content.

Abstract: An alloy powder contains greater than or equal to 3% by mass and less than or equal to 30% by mass of tungsten, greater than or equal to 2% by mass and less than or equal to 30% by mass of aluminum, greater than or equal to 0.2% by mass and less than or equal to 15% by mass of oxygen, and at least one of cobalt and nickel as the balance. The alloy powder has an average particle diameter of greater than or equal to 0.1 ?m and less than or equal to 10 ?m.

Abstract: A method of manufacturing an object is disclosed. In some aspects, the method includes selectively heating an initial layer of a composition, including elements of a granular material coated with a metallic material. The method further includes selectively heating an additional layer of the composition, disposed in contact with the initial layer, the selective heating of each respective layer to the threshold temperature actuating an exothermic reaction between the elements of the granular material and the metallic material coating associated therewith to form a molten portion of the respective layer, with turbulence in the molten portion of the respective layer disrupting oxidation of the molten granular material and promoting formation of an intermetallic compound in the molten portion of the respective layer upon cooling thereof below the threshold temperature, and with the portions of the respective layers combining to form the object.

Abstract: A method for manufacturing a machine component made of metal-based material is described. The method comprises the steps of: providing a powder blend comprising at least one metal-containing powder material and at least one strengthening dispersor in powder form, wherein the strengthening dispersor in powder form has an average grain size less than an average grain size of the metal-containing powder material; and forming the machine component by an additive manufacturing process using the powder blend.

Abstract: Material is provided for forming a part using a manufacturing system. The material includes a plurality of discrete particles. Each of the particles includes a metal powder core encapsulated by a non-metal coating. At least the cores of the particles are adapted to be solidified together by the manufacturing system to form the part.