Abstract: A thick steel plate for high heat input welding and having great heat-affected area toughness and a manufacturing method therefor, comprising the steps of smelting, casting, rolling, and cooling. Chemical composition is properly controlled for the steel plate and satisfies 1?Ti/N?6 and Mg/Ti>0.017, where effective S content in steel=S?1.3 Mg?0.8 Ca?0.34 REM?0.35 Zr, and effective S content in steel: 0.0003-0.003%; finely dispersed inclusions may be formed in the steel plate, and the amount of composite inclusion MgO+Ti2O3+MnS in the steel plate is controlled at a proportion greater than or equal to 5%. The tensile strength of a base material so acquired is ?510 MPa, insofar as welding input energy is 200-400 kJ/cm, the average Charpy impact work of the steel plate at ?40 ° C. is 100 J or more, at the same time, the average Charpy aging impact work of the base material of ½ thickness at ?40° C. is 46 J or more.

Abstract: Disclosed is a method for preparing a rare-earth permanent magnet. The method includes: preparing an R-T-B-based sintered magnet; applying a first mixture including a light rare-earth element onto the surface of the R-T-B-based sintered magnet and diffusing the first mixture under a vacuum atmosphere to prepare a light rare-earth permanent magnet having the light rare-earth element diffused into a grain boundary; and applying a second mixture including a heavy rare-earth element onto the surface of the light rare-earth permanent magnet and diffusing the second mixture into the grain-boundary under a vacuum atmosphere to prepare a rare-earth permanent magnet.

Abstract: An alloy includes in weight % based upon the total weight of the alloy: 28-35% Cr; 2.5-4% Al; 0.8-2% Nb; 5.5-7.5% W; 0-0.5% Mo; 0-0.3% Ti; 0.1-0.3% Zr; 0.1-1% Si; 0-0.07% Y; 0-2% Mn; 0-1% Ni; 0-0.05% C; 0-0.015% B; 0-0.02% N; 0.02-0.04 Ce; balance Fe. The alloy includes a recrystallized, equi-axed grain structure, and forms an external alumina scale, and has strengthening particles including Fe2M (M: Nb, W, Mo, and Ti) type C14 Laves-phase, and a BCC ferritic matrix microstructure from room temperature to melting point with less than 1% FCC-phase, less than 1% martensite phase, less than 0.5 wt. % of carbides (MC and M23C6), and at least 1% tensile elongation at room temperature. The alloy provides a creep resistance of greater than 3000 to 15000 h creep rupture life at 750° C. and 50 MPa, or greater than 500 to 5000 h creep rupture life at 700° C. and 100 MPa.

Abstract: Provided is a method for producing a sintered body that forms a rare-earth permanent magnet, has a single sintered structure and an arbitrary shape, and has easy magnetization axis orientations of different directions applied to the magnet material particles in a plurality of arbitrary regions. This method forms a three-dimensional first molded article from a composite material formed by mixing a resin material and magnet material particles containing a rare-earth substance. The first molded article is then subjected to a deforming force and a second molded article is formed in which the orientation direction of the easy magnetization axis of the magnet material particles in at least the one section of the horizontal cross-section is changed to a direction which differs from the orientation direction of the first molded article. The second molded article is heated to a sintering temperature and kept at the temperature for a period of time.

Abstract: The present invention pertains to high-strength/high-ductility alloys, and in particular, provides high-strength composite particles comprising a ceramic phase and a metal phase, a composite powder, a method for manufacturing composite particles, and a method for manufacturing a composite member. Composite particles including a ceramic phase and a metal phase, wherein the composite particles are characterized in that the porosity is no greater than 45% in area ratio in cross-section, and the area ratio of the metal phase, where the total area of the ceramic phase and the metal phase is 100%, is at least 20%. A composite powder characterized in including a plurality of the composite particles.

Abstract: A dual-hardness clad steel plate. One surface of the steel plate is a high-hardness layer, the other surface of the steel plate is a low-hardness layer, and a combination of atoms is achieved between the high-hardness layer and the low-hardness layer by rolling bonding, wherein Mn13 steel is adopted for the low-hardness layer, and the Brinell hardness of the high-hardness layer is greater than 600. Further disclosed is a production method of the dual-hardness clad steel plate, comprising: 1) respectively preparing a high-hardness layer slab and a low-hardness layer slab; 2) assembling: preprocessing combined faces of the slabs, carrying out peripheral welded sealing on joint faces of the slabs, and carrying out vacuumizing treatment on a composite slab after welded sealing; 3) heating; 4) carrying out composite rolling; 5) cooling; and 6) carrying out thermal treatment, wherein the heating temperature is 1050-1100° C.

Abstract: Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.

Abstract: The present invention provides a robust metal lamination-shaped object containing aluminum and having no defect. A metal powder used for forming this metal lamination-shaped object is an aluminum-based powder having a volume-based 50% particle diameter larger than or equal to 10 ?m and smaller than 100 ?m when a particle diameter distribution is measured by a laser diffraction-scattering method, a specific surface area smaller than or equal to 0.5 m2/g, and an oxygen amount larger than or equal to 3 mg/m2 and less than or equal to 10 mg/m2 per unit surface area. A relationship between a hydrogen amount (X ml in standard state) per 100 g of the aluminum-based powder and a specific surface area (Y m2/g), and a relationship between the hydrogen amount (X ml in standard state) and an oxygen amount (Z wt %), are respectively in accordance with formulas: X/Y<151 and Z/X>0.0022.

Abstract: A method for forming a component utilizing ultra-high strength steel and components formed by the method. The method includes the step of providing a flat blank of ultra-high strength 22MnB5 steel. The next step of the method is cold forming the flat blank into an unfinished shape of a component while the blank is in an unhardened state. Then, heating the unfinished shape of the component and generating a spline form thereon. The method proceeds by forming a finished shape of the component using a quenching die resulting in a fine-grained martensitic component material structure and enabling net shape processing to establish final geometric dimensions of the component.

Abstract: The present disclosure relates to a middle high temperature pressure vessel steel plate having excellent resistance against a post weld heat treatment (PWHT) and a manufacturing method therefor. The pressure vessel steel plate includes 0.05 to 0.17 wt % of C, 0.50 to 1.00 wt % of Si, 0.3 to 0.8 wt % of Mn, 1.0 to 1.5 wt % of Cr, 0.3 to 1.0 wt % of Mo, 0.003 to 0.30 wt % of Ni, 0.003 to 0.30 wt % of Cu, 0.005 to 0.06 wt % of Sol.Al, 0.015 wt % or less of P, and 0.020 wt % or less of S; additionally two or more elements selected from 0.002 to 0.025 wt % of Nb, 0.002 to 0.03 wt % of V, and 0.002 to 0.15 wt % of Co; and Fe and unavoidable impurities as the reminder, wherein a microstructure of a central portion of the steel plate is formed in a mixed structure of 20 area % or more of tempered martensite and the residue bainite.

Abstract: Nanoparticles and method for producing uniform silicate-based nanoparticles are disclosed. The method comprises a step of injecting into tubular branched elements comprising static mixers a first aqueous solution comprising a water-soluble silicate compound and a second aqueous solution comprising a water-soluble compound releasing cationic species in solution, and allowing the reaction between the first and the second aqueous solutions in a micro-mixing regime, the method being characterized in that the overall mixing time is kept below 10?5 s. A further step of allowing the solution obtained in the micro-mixing regime to mix in a macromixing regime. Nanoparticles obtained through the present method are also disclosed.

Abstract: The present invention relates to a method and an apparatus for coating large area solid substrates with metal based alloys or compounds by contacting the substrate surface with an unoxidised metal powders formed by in situ reaction of a metal halide and a reducing agent. The method is suitable for coating large area substrates such as flakes, powder, beads, and fibres with metal based alloys or compounds starting from low-cost chemicals such as metal chlorides. The method is particularly suited for production of substrates coated with metals, alloys and compounds based on Zn, Sn, Ag, Co, V, Ni, Cr, Fe, Cu, Pt, Pd, Ta, Nb, Rh, Ru, Mo, Os, Re and W.

Abstract: A magnesium alloy is provided that includes: 5.0 mass % or more and 15.0 mass % or less of Al; 2.5 mass % or more and 7.0 mass % or less of Sr; 0.05 mass % or more and less than 3.0 mass % of Ca; and 0.1 mass % or more and 0.6 mass % or less of Mn, with a remainder including Mg and inevitable impurities.

Abstract: The present invention relates to a thick steel plate having excellent low-temperature toughness and hydrogen-induced cracking resistance, and a method for manufacturing the same.

Abstract: The invention relates to the use of off-gas from furnaces (2) for the process of reduction of iron oxide. The bypass duct leads off-gas with reduction atmosphere directly into the reactor, passing through and back to join the main duct of dedusting system using negative pressure of the primary dedusting system. The off-gas directly heats up the iron oxide pellet and maintain the reduction atmosphere in the reactor and allow the reaction to proceed and prevent re-oxidation.

Abstract: The present disclosure relates to polycrystalline diamond covalently bonded to a substrate by spark plasma sintering and methods of covalently bonding polycrystalline diamond and a substrate. Spark plasma sintering produces plasma from a reactant gas found in the pores in the polycrystalline diamond and, optionally, also the substrate. The plasma forms carbide structures in the pores, which covalently bond to the substrate.

Abstract: Provided are a method of preparing a metal oxide-silica composite aerogel, which includes preparing metal oxide-silica composite precipitates by adding a metal salt solution to a silicate solution and performing a reaction, and washing the metal oxide-silica composite precipitates with a washing solvent having a surface tension at 20±5° C. of 30 mN/m or less and drying the washed metal oxide-silica composite precipitates, and a metal oxide-silica composite aerogel having increased specific surface area and pore properties as well as tap density, which is significantly reduced by a maximum of 78.6% in comparison to a composite aerogel prepared by using water as a typical washing solvent, prepared by the method.

Abstract: A multilayer composite bonding material with a plurality of thermal stress compensation layers is provided. The plurality of thermal stress compensation layers include a metal core layer, a pair of particle layers extending across the metal core layer such that the metal core layer is sandwiched between the pair of particle layers, and a pair of metal outer layers extending across the pair of particle layers such that the pair of particle layers are sandwiched between the pair of metal outer layers. A pair of low melting point (LMP) bonding layers extend across the pair of metal outer layers. The metal core layer, the pair of particle layers, and the pair of metal outer layers each have a melting point above a transient liquid phase (TLP) sintering temperature, and the pair of LMP bonding layers each have a melting point below the TLP sintering temperature.

Abstract: A method for manufacturing reinforced steel structural components is described. The method comprises providing a previously formed steel structural component, selecting one or more reinforcement zones of the previously formed structural component, and locally depositing a material on the reinforcement zone to create a local reinforcement on a first side of the structural component. Locally depositing a material on the reinforcement zone comprises supplying a metal filler material to the reinforcement zone, and substantially simultaneously applying laser heat to melt the metal filler material and create the reinforcement by drawing specific geometric shapes on the first side of the structural component with the metal filler material and the laser heating. And the method further comprises providing cooling to areas on an opposite side of the structural component. The disclosure further relates to a tool for manufacturing reinforced steel structural components and to the components obtained using such methods.

Abstract: A hot-rolled steel sheet includes a predetermined chemical composition, and a structure which includes, by area ratio, a ferrite in a range of 5% to 60% and a bainite in a range of 30% to 95%, in which in the structure, in a case where a boundary having an orientation difference of equal to or greater than 15° is defined as a grain boundary, and an area which is surrounded by the grain boundary and has an equivalent circle diameter of equal to or greater than 0.3 ?m is defined as a grain, the ratio of the grains having an intragranular orientation difference in a range of 5° to 14° is, by area ratio, in a range of 20% to 100%.