Abstract: To provide a metal-carbon fiber reinforced plastic material (CFRP) composite that has excellent adhesion and adhesion durability at a member interface and a method of producing a metal-CFRP composite. The metal-CFRP composite according to the present invention includes: a metal member; a CFRP layer; and one or two layers of coating layers provided between the metal member and the CFRP layer. In the case where the coating layer consists of one layer, the coating layer is a coating layer containing an isocyanate group, and the matrix resin contains a phenoxy resin as a main component thereof, contains an epoxy group, and has bonds represented in (a structural formula 1) in the vicinity of an interface between the CFRP layer and the coating layer.

Abstract: There is provided a cooling structure between battery cells which allows a temperature rise of adjacent battery cells to be restrained more efficiently even for an appearance of an abnormally heat-generating battery cell. A cooling structure between battery cells disposed side by side so that two side surfaces face each other, the cooling structure between the battery cells includes, formed of plate-shaped metal members each having a thermal conductivity of 100 W/m·K or more and a thickness of 0.3 mm or more, and being in contact with the respective facing side surfaces of the adjacent battery cells, and a heat insulating layer disposed between the plate-shaped metal members, and having a thermal conductivity of 1.0 W/m·K or less and a thickness of 0.

Abstract: High strength steel sheet and plated steel sheet having high plateability, LME resistance, and hydrogen embrittlement resistance, that is, steel sheet containing C: 0.05 to 0.40%, Si: 0.2 to 3.0%, Mn: 0.1 to 5.0%, and sol. Al: 0.4 to 1.50%, having an internal oxidation layer including fine granular oxides and coarse granular oxides in a surface layer of the steel sheet, a number density of fine granular oxides in the internal oxidation layer being 4.0/?m2 or more, a number density of coarse granular oxides in the internal oxidation layer being 4.0/25 ?m2 or more and 30.0/25 ?m2 or less, and including a surface depleted layer with a steel composition not including oxides which satisfies, by mass %, Si?0.6% and Al?0.05% at a depth of ½ of the average depth of the internal oxidation layer calculated from the cross-sectional SEM image of the steel sheet, and a plated steel sheet using the same.

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path is made of a Zn-based plated steel sheet, an inorganic film or a resin film is formed as a chemical conversion coating film on a surface of the Zn-based plated steel sheet, and the inorganic film contains a Si-based component or a Zr-based component as a main component.

Abstract: This hot-stamping formed body includes, as a chemical composition, by mass %: C: 0.15% or more and 0.50% or less; Si: 0.10% or more and 3.00% or less; Mn: 0.10% or more and 3.00% or less; P: less than 0.10%; S: less than 0.10%; N: less than 0.10%; Ti: 0.020% or more and 0.150% or less; B: 0.002% or more and 0.010% or less; optionally Al, Cr, Mo, Co, Ni, Cu, V, W, Ca, Mg, and REM; and a remainder including Fe and impurities, in which a microstructure of the hot-stamping formed body includes, by volume fraction, 85% or more of martensite and less than 15% of retained austenite, and in the microstructure, a standard deviation of a frequency distribution of nanohardnesses is 0.70 GPa or less, and an average grain size is 4.0 ?m or less.

Abstract: This steel sheet includes: a base steel sheet having a predetermined chemical composition; and a scale formed on a surface of the base steel sheet, in which the base steel sheet has a decarburized layer formed on a side of an interface with the scale, the decarburized layer has an internal oxidized layer formed on the side of the interface with the scale, a depth of the decarburized layer from an interface between the base steel sheet and the scale is 90 ?m or more, a depth of the internal oxidized layer from the interface is less than 30 ?m, and the scale contains 80% or more of Fe by mass %.

Abstract: High strength steel sheet and plated steel sheet having high plateability, LME resistance, and hydrogen embrittlement resistance, that is, steel sheet containing C: 0.05 to 0.40%, Si: 0.2 to 3.0%, Mn: 0.1 to 5.0%, and sol. Al: 0.4 to 1.50%, having an internal oxidation layer including fine granular oxides in a surface layer of the steel sheet, a number density of fine granular oxides in the internal oxidation layer being 4.0/?m2 or more, and including a surface depleted layer with a steel composition not including oxides which satisfies, by mass %, Si?0.6% and Al?0.05% at a depth of ½ of the average depth of the internal oxidation layer calculated from the cross-sectional SEM image of the steel sheet, and a plated steel sheet using the same.

Abstract: A steel wire which has an excellent fatigue limit when made into a spring is provided. A chemical composition of the steel wire according to the present embodiment consists of, in mass %, C: 0.53 to 0.59%, Si: 2.51 to 2.90%, Mn: 0.70 to 0.85%, P: 0.020% or less, S: 0.020% or less, Cr 1.40 to 1.70%, Mo: 0.17 to 0.53%, V: 0.23 to 0.33%, Cu: 0.050% or less, Ni: 0.050% or less, Al: 0.0050% or less, Ti: 0.050% or less, N: 0.0070% or less, Ca: 0 to 0.0050%, and Nb: 0 to 0.020%, with the balance being Fe and impurities. In the steel wire, a number density of V-based precipitates having a maximum diameter ranging from 2 to 10 nm is 500 to 8000 pieces/?m2.

Abstract: A non oriented electrical steel sheet consists of a silicon steel sheet and an insulation coating. The silicon steel sheet includes an internally oxidized layer containing SiO2 in a surface thereof, an average thickness of the internally oxidized layer is 0.10 to 5.0 ?m, and a Vickers hardness in the internally oxidized layer is 1.15 to 1.5 times as compared with a Vickers hardness in a thickness central area.

Abstract: Provided is a grain-oriented electrical steel sheet including a base steel sheet, an intermediate layer which is disposed in contact with the base steel sheet and mainly includes silicon oxide, and an insulation coating which is disposed in contact with the intermediate layer and mainly includes phosphate and colloidal silica, in which the base steel sheet contains predetermined chemical composition, BN having an average particle size of 50 to 300 nm is present, when an emission intensity of B is measured using glow discharge emission analysis, predetermined conditions are satisfied, and a ratio of a major axis to a minor axis of BN is 1.5 or less.

Abstract: Provided is a blank made of a steel and comprising at least two protruding regions (313) having an outer edge (311) protruding outward in in-plane directions, in which a softened part (320) is formed at least partially in the protruding regions (313) and the softened part (320) is formed in at least a part of the outer edge of the protruding regions (313), a Vickers hardness of the softened part (320) is lower than a Vickers hardness of a main portion region (310), and the blank comprises at least two of the protruding regions (313) having the softened part (320).

Abstract: The present invention provides a method for obtaining a carburized part using steel high in content of Cr and realizing bending fatigue strength at an extremely high level by vacuum carburizing. The carburized part is obtained by treating a steel material having a predetermined chemical composition by vacuum carburizing provided with a carburizing period of 10 to 200 minutes at 850 to 1100° C. and a diffusion period of 15 to 300 minutes at 850 to 1100° C., then quenching and tempering it.

Abstract: A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PH2O/PH2 is controlled, an annealing separator applying process where a mass ratio of MgO and Al2O3 in an annealing separator is controlled, a final annealing process where hydrogen in mixed gas atmosphere is controlled to 50 volume % or more, an annealing separator removing process where water-washing is conducted using solution with inhibitor, a smoothing process where chemical-polished is conducted to control average roughness Ra, and an insulation coating forming process where insulation coating forming solution in which crystalline phosphide is included is applied.

Abstract: A grain oriented electrical steel sheet includes a base steel sheet, a glass film, and a tension-insulation coating. When a glow discharge emission spectroscopy is conducted from a surface of the glass film toward a depth direction, an analysis starting time Ts, a time TAlp at which Al shows a maximum emission intensity, an Al emission intensity F(TAlp) at the TAlp, a time TSip at which Si shows a maximum emission intensity, and an Al emission intensity F(TSip) at the TSip satisfy 0.05?F(TSip)/F(TAlp)?0.50 and 2.0?(TAlp?Ts)/(TSip?Ts)?5.0.

Abstract: A threaded tubular connection comprises a first tubular (12) component and a second tubular component (14). The first tubular component (12) includes a female portion (10) defined on an interior surface of the first tubular component. The female portion includes an inner threaded portion (16d) and an outer threaded portion (16b) which are offset radially with respect to a longitudinal axis of the first tubular component by a first shoulder (26). The second tubular component (14) includes a male portion (18) defined on an exterior surface of the second tubular component. The male portion is to be inserted into the female portion, and includes an inner threaded portion (18d) and an outer threaded portion (18b) which are offset radially with respect to a longitudinal axis of the second tubular component by a second shoulder (28). The second shoulder is to abut the first shoulder once the male portion is connected to the female portion.

Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention is a non-oriented electrical steel sheet including a base metal steel sheet and a composite coating film that is formed on surfaces of the base metal steel sheet and includes Zn-containing phosphate and an organic resin, wherein the non-oriented electrical steel sheet contains crystalline aluminum phosphate showing diffraction lines belonging to ICDD No. 01-074-3256 when the composite coating film is measured by a wide-angle X-ray diffraction method.

Abstract: A curved panel part includes: a curved panel made of metal; and a reinforcement joined to the curved panel and made of a plurality of FRP layers including continuous fibers, in which each of the plurality of FRP layers has a single fiber direction, at least one layer out of the plurality of FRP layers has a fiber direction different from that of another layer, in the plurality of FRP layers, a proportion of layers having an angular difference in the fiber direction of 30° or more is 15% or more of all of the layers, and when calculating, by defining a maximum principal curvature direction of the curved panel as a 0° direction and a direction orthogonal to the 0° direction as a 90° direction, each of a 0° direction component and a 90° direction component regarding the fiber direction of each FRP layer of the reinforcement joined to the curved panel, by using a trigonometric function, an expression (1) is satisfied.

Abstract: A tailored blank including a first steel sheet having a carbon content of 0.27 mass % or more, and a second steel sheet that is butt welded to the first steel sheet and that has a carbon content of 0.20 mass % or less, wherein the tailored blank includes an elongated future top plate portion, a future sidewall portion, and a future flange portion, a first steel sheet region that is configured by the first steel sheet is formed spanning part or all of a length direction of the future top plate portion, and a second steel sheet region that is configured by the second steel sheet is formed at the future flange portion to be joined by welding to another member, and wherein part or all of a length direction of the first steel sheet region is positioned within a length direction range of the second steel sheet region.

Abstract: Provided is a burring processing method, which is a method for forming a buffing processed portion including a raised portion and a curved portion in a metal component having a pilot hole formed therein, the method being characterized by including: a preforming step of enlarging a diameter of the pilot hole, moving an edge portion of the pilot hole relative to the metal component in a first direction of a thickness direction of the metal component in a first range around the pilot hole of the metal component, and forming the whole first range into a preformed portion raised from the metal component in the first direction; and a main forming step of deforming the preformed portion in a second direction opposite to the first direction, forming a second range on an outer diameter side of the preformed portion to have the same height as the first range in the first direction, and forming part of a third range on an inner diameter side of the preformed portion from the second range to be part of the curved portion

Abstract: This hot-dip Zn—Al—Mg-based plated steel includes: a steel; and a plating layer formed on a surface of the steel, in which the plating layer contains, as an average composition, Mg: 1 to 10 mass %, Al: 4 to 22 mass %, and a remainder consisting of Zn and impurities, the plating layer includes an (Al—Zn mixed structure) in an area ratio of 10% to 70% in a cross section of the plating layer in a matrix of an (Al/Zn/MgZn2 ternary eutectic structure), the (Al—Zn mixed structure) includes a first region that has a Zn concentration in a range of 75 mass % or more and less than 85 mass % and a second region that is present inside the first region and has a Zn concentration in a range of 67 mass % or more and less than 75 mass %, and an area ratio of the second region in the (Al—Zn mixed structure) in the cross section of the plating layer is more than 0% and 40% or less.