Abstract: To provide a metal-fiber reinforced resin material (FRP) composite having a good appearance even when used as an automobile outer panel and not deformed even after a coating and baking process. The metal-FRP composite of the invention has a laminated structure of three or more layers, having at least a metal layer, a fiber-reinforced resin material layer holding a reinforced fiber material in a layer constituted by a matrix resin, and a resin layer located between the metal layer and the fiber-reinforced resin material layer. The resin layer is a layer constituted by a room temperature curing adhesive or by a predetermined resin and the room temperature curing adhesive. An elastic modulus E of the resin layer is more than 0.1 MPa and 1000 MPa or less, and a thickness of the resin layer is 0.005 times or more and less than 7.500 times a thickness of the metal layer.

Abstract: A tray (20) including a bottom wall (21) and a peripheral side wall (22) erected from an outer periphery of the bottom wall (21) includes a high-strength portion HT having a high tensile strength; and a low-strength portion LT having a tensile strength lower than that of the high-strength portion HT. The low-strength portion LT includes a recessed portion (C) having a corner portion (22C) in a first side wall inner surface (221a) and a second side wall inner surface (222a) which are adjacent to each other at a minor angle and a corner section (21C) on an upper surface (21a) of the bottom wall (21) having a minor angle to each of the first side wall inner surface (221a) and the second side wall inner surface (222a).

Abstract: This steel sheet for hot-stamping includes: a base steel sheet having a predetermined chemical composition; and a galvanized layer formed on a surface of the base steel sheet, in which a microstructure at a position at ¼ depth which is in a range of ? to ? of a sheet thickness in a sheet thickness direction from the surface of the base steel sheet contains, in volume fraction, ferrite: 20% to 95% and pearlite: 5% to 80%, the remaining structure including bainite, the galvanized layer has a coating amount of 90 g/m2 or more, and when the maximum value of the B content in the galvanized layer is Bps and the B content at the position at ¼ depth of the base steel sheet is Bqs, Bps is 1.2 times or more Bqs.

Abstract: An arithmetic processing unit of a balance inspection apparatus generates three-dimensional point cloud data based on measurement results of surface shape measuring parts, generates surface data based on the three-dimensional point cloud data that have been aligned with a surface shape model defined in a coordinate system in which a designed rotation center axis of a crankshaft is an X axis, extracts evaluation object data, which are surface data of an evaluation object portion including an arm of the crankshaft, calculates gravitational centers and areas of cross sections orthogonal to the X axis at a plurality of positions along the X axis of the evaluation object data, calculates a gravitational center and a weight of the evaluation object data based on the gravitational centers of the cross sections and predetermined weights set according to the areas of the cross sections, and calculates an imbalance amount of the crankshaft.

Abstract: A top sheet (210), two walls (221, 222), and two ridge portions (231, 232) are provided, tensile strengths of the top sheet (210) and the walls (221, 222) are 1470 MPa or more, each of the two ridge portions (231, 232) extend between the top sheet (210) and the walls (221, 222), in a longitudinal direction of the top sheet (210), and a cross section of a center portion in the longitudinal direction is an open cross section having a groove shape.

Abstract: A burring structural member resistant to fracture even if the burring structural part is bent back is provided. In the burring structural member of the present disclosure, a thickness T of the sheet-shaped part is 2.0 mm or more, a Charpy impact value vE(0) of the sheet-shaped part at 0° C. is 50 J/cm2 or more, a BCI value calculated by BCI=vE(0)/Lc based on the Charpy impact value vE(0) (J/cm2) and a maximum length Lc (?m) of a crack at the inside bend of the bent wall part of the burring structural parts is 2.5 or more, and a curvature radius R (mm) of the inside bend of the bent wall part is larger than R1 calculated by R1=25/BCI?1.5.

Abstract: To further improve electrodeposition coating properties in a weld bead zone. A welded joint according to the present invention includes: a first steel sheet and a second steel sheet; and a weld bead zone formed by arc welding or laser welding, wherein at least one of the first steel sheet or the second steel sheet has a plating layer composed of a predetermined component and an oxide layer located on the plating layer in a non-heat-affected zone, and the weld bead zone has a weld metal and a slag layer formed on part of a surface of the weld metal, and the slag layer contains, by mass % when oxygen is excluded, Al: 1.0 to 45.0% and Mg: 1.0 to 30.0%, with the balance composed of Fe, easily oxidizable metallic elements, and impurities.

Abstract: According to the present invention, provided are a joint structure (100) which joins a plurality of overlapped steel members (110, 120) using a connecting element (130) having a shaft portion (131), the joint structure including: a first steel member (110); and one or more of second steel members (120) overlapping the first steel member (110), in which the shaft portion (131) of the connecting element (130) is penetrated through the second steel member (120), and the shaft portion (131) of the connecting element (130) and the second steel member (120) are joined by friction welding, and the shaft portion (131) and the first steel member (110) are joined by friction welding, and a joining method for obtaining the joint structure.

Abstract: This aluminum-plated steel sheet has a steel sheet and a plating layer formed on a surface of the steel sheet, the plating layer contains one or more A group elements selected from a group consisting of Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn, a remainder of Al, Fe, and impurities, a thickness t of the plating layer is 10 to 60 ?m, and an average grain size is 2t/3 or less and 15 ?m or less in a thickness range from an outermost surface of the plating layer to a ? thickness t position.

Abstract: A metal-fiber reinforced resin material composite body is provided with: a metal member; a fiber-reinforced resin material which is superposed on at least one surface of the metal member so as to be complexed with the metal member; and a bonding resin layer which is interposed between the metal member and the fiber-reinforced resin material. The fiber-reinforced resin material includes a matrix resin that contains 50 parts by mass or more of a phenoxy resin in 100 parts by mass of the resin component and a reinforcing fiber material that is contained in the matrix resin; the concentration of the phenoxy resin in the resin component of the bonding resin layer is lower than the concentration of the phenoxy resin in the resin component of the matrix resin; and the shear strength between the metal member and the fiber-reinforced resin material is 0.8 MPa or more.

Abstract: An arc weld metal according to an aspect of the present invention contains, in a unit mass %, 0.10% or more and 0.30% or less of C, 0.30% or more and 1.00% or less of Si, 1.30% or more and 3.00% or less of Mn, 0.0500% or less of P, 0.0100% or less of S, 0.01% or less of N, and 0.02% or more and 0.07% or less of O, a remainder including iron and impurities, and the residual austenite volume percentage being 3.0% or more and 16.0% or less, in a unit mass %.

Abstract: An ?+? titanium alloy shape includes an acicular microstructure, wherein a 0.2% proof stress is 830 MPa or more, an elongation is 10% or more, a fatigue strength is 450 MPa or more, an area fraction of voids is 1.0×10?5 % or less, a twist angle from one end to the other end is within ±3.0°, and a warpage height (mm)/total length (m) is within ±2.17.

Abstract: A core design device (100) acquires an application parameter including a parameter indicating an application method of a deformation pattern (310a, 310b). The core device (100) changes a shape of a design target element by applying the deformation pattern (310a, 310b) to the design target element according to the application method included in the application parameter. The core design apparatus (100) determines a shape of a core based on a value indicating a characteristic of a device when the device including the core in which the shape of the design target element has been changed is operated.

Abstract: This steel has a steel sheet substrate and a protective film formed on at least a part of a surface of the steel sheet substrate, the chemical composition of the steel sheet substrate is, by mass %, C: 0.25% to 0.65%, Si: 0.05% to 2.00%, Mn: 0.30% to 3.00%, P: 0.050% or less, S: 0.0100% or less, N: 0.010% or less, O: 0.010% or less, Cr: 0.05% to 1.00%, and Cu: 0.10% to 1.00%, in an X-ray analysis in which measurement is carried out using a CuK? radiation, in a case where a peak intensity at a diffraction angle (2?) position of 36.6±0.5° is regarded as 100%, the protective film has a peak having a peak intensity of more than 250% at a diffraction angle (2?) position of 35.5±0.5° and a tensile strength is more than 1,500 MPa.

Abstract: An annealing separator used for manufacture of the grain-oriented electrical steel sheet according to the present invention contains MgO, at least one or more types of compounds of metal selected from a group comprised of Y, La, and Ce, at least one or more types of compounds of metal selected from a group comprised of Ti, Zr, and Hf, and at least one or more types of compounds of metal selected from a group comprised of Ca, Sr, and Ba, when a content of the MgO in the annealing separator is defined as 100% by mass %, a total content of the compounds selected from a group comprised of Y, La, and Ce converted to oxides is 0.8 to 8.0%, a total content of the compounds of metal selected from a group comprised of Ti, Zr, and Hf converted to oxides is 0.5 to 9.0%, and a total content of the compounds of metal selected from a group comprised of Ca, Sr, and Ba converted to sulfates is 0.5 to 8.

Abstract: Steel sheet and plated steel sheet comprised of steel sheet with a thin thickness in which sufficient strength and plateability or chemical convertibility are both achieved, i.e., steel sheet having a chemical composition containing, by mass %, C: 0.05 to 0.30%, Si: 0.01 to 2.50%, Mn: 0.80 to 3.00%, Al: 0.010 to 2.000%, etc. and having a balance comprising Fe and impurities and having a thickness of 0.4 to 2.0 mm, in which steel sheet, a tensile strength is 550 to 1500 MPa, an internal oxidation layer and decarburized layer are contained, when a thickness of the decarburized layer per side of the steel sheet: A (?m), a bulk C concentration of the steel sheet: Cb (%), and a thickness of the steel sheet: t (mm), 0.01?A/t?0.15, and a C concentration at the ½A position is Cb/2 or more and plated steel sheet using that steel sheet.

Abstract: A method of manufacturing a press-formed product includes: capturing the sheet thickness of a sheet B; and using a die 6, a punch 7, and a movable mold part capable of moving relative to both the die 6 and punch 7 to press-form the sheet B into a press-formed product. During press-forming, the initial position of the movable mold part relative to the die 6 or punch 7 is controlled depending on the sheet thickness of the sheet B.

Abstract: A hot-rolled steel sheet which has excellent rigidity along with high strength, excellent workability, and excellent LME resistance is provided. A hot-rolled steel sheet of the present embodiment consists of, in mass %, C: 0.040 to 0.120%, Si: 0.01 to 0.60%, Mn: 0.50 to 1.50%, P: 0.025% or less, S: 0.010% or less, Al: 0.010 to 0.070%, N: 0.0070% or less, Ti: 0.055 to 0.200%, and B: 0.0010 to 0.0050%, with the balance being Fe and impurities. In the microstructure of the hot-rolled steel sheet, an area fraction of bainitic ferrite is 85% or more and the dislocation density is 8.0×1013 to 100.0×1013/m2. The average equivalent circular diameter of Ti carbides in the hot-rolled steel sheet is 10 nm or less, and the average equivalent circular diameter of grains of the bainitic ferrite is 15 ?m or less.

Abstract: A long structural member that, in a transverse section of one part or all of the long structural member in a longitudinal direction, includes the following configuration. A top plate part, a first flange part, and a second flange part are flat. A first side plate part, a first upper corner part, and a first lower corner part constitute a first thick-wall part. A thickness of the first thick-wall part is greater than a thickness of the top plate part and is greater than a thickness of the first flange part. A second side plate part, a second upper corner part, and a second lower corner part constitute a second thick-wall part. A thickness of the second thick-wall part is greater than the thickness of the top plate part and is greater than a thickness of the second flange part.

Abstract: A steel sheet includes, as a chemical composition, by mass %: C: 0.0015% to 0.0400%; Mn: 0.20% to 1.50%; P: 0.010% to 0.100%; Cr: 0.001% to 0.500%; Si: 0.200% or less; S: 0.020% or less; sol. Al: 0.200% or less; N: 0.0150% or less; Mo: 0% to 0.500%; B: 0% to 0.0100%; Nb: 0% to 0.200%; Ti: 0% to 0.200%; Ni: 0% to 0.200%; Cu: 0% to 0.100%; and a remainder including iron and impurities, in which a metallographic structure in a surface layer region includes ferrite having a volume fraction of 90% or more, and in the surface layer region, an average grain size of the ferrite is 1.0 ?m to 15.0 ?m, and a texture in which an XODF{001}/{111}, S as a ratio of an intensity of {001} orientation to an intensity of {111} orientation in the ferrite is 0.30 or more and less than 3.50 is included.