Abstract: A flux cored wire which exhibits excellent welding workability during gas-shielded arc welding, while enabling the achievement of a welded metal that has excellent tensile strength and toughness at low temperatures. The wire is obtained by filling a sheath with a flux and is adequately controlled with respect to the corresponding chemical components, while having a ? of from 10.0 to 30.0 as calculated by the mathematical formula (I): ?=4.1×??3.2×??32.3. The respective contents, in mass %, of Si, Cr, Mo, Ti, C, N, Mn, Cu and Ni, relative to the total mass of the wire, are respectively represented by [Si], [Cr], [Mo], [Ti], [C], [N], [Mn], [Cu] and [Ni], ?=0.02×[Si]+[Cr]+1.20×[Mo]+0.3×[Ti]+0.30 and ?=24×[C]+28×[N]+0.25×[Mn]+0.5/[Cu]+1.10×[Ni].

Abstract: A solid wire for electroslag welding, including Fe and, by mass % based on a total mass of the wire: C: more than 0% and 0.03% or less; Si: more than 0% and 0.10% or less; Mn: more than 0% and 0.25% or less; Ni: 10.5%-14.0%; S: more than 0% and 0.010% or less; Al: more than 0% and 0.250% or less; REM: 0.002%-0.080%; and O: more than 0% and 0.0090% or less.

Abstract: A flux for electroslag welding used for electroslag welding may include a basic oxide, an amphoteric oxide, an acidic oxide, and a fluoride. With respect to a total mass of the flux, the basic oxide may include 5.1 mass % or more and 30.0 mass % or less of CaO, the acidic oxide includes 17 mass % or less of SiO2, and the fluoride includes 35 mass % or more and 73 mass % or less of CaF2. A content of the CaO is 30 mass % or more with respect to a total mass of the basic oxide, a content of the SiO2 is 80 mass % or more with respect to a total mass of the acidic oxide, a content of the CaF2 is 80 mass % or more with respect to a total mass of the fluoride, and a value of (2×[CaF2]+[CaO])/[SiO2] is 5 or more and 56 or less.

Abstract: A Ni-based alloy flux cored wire includes a Ni-based alloy outer sheath and a flux with which the Ni-based alloy outer sheath is filled, and includes, per a total mass of the wire, Ni: 45 mass % to 75 mass %, Cr: 20 mass % or less, Mo: 10 mass % to 20 mass %, Fe: 10.0 mass % or less, TiO2: 3 mass % to 11 mass %, Ca: 0.01 mass % to 2.0 mass %, F: 1.0 mass % or less (including 0 mass %), and Nb: less than 0.5 mass % (including 0 mass %).

Abstract: A solid wire for electroslag welding, including Fe and, by mass % based on a total mass of the wire: C: more than 0% and 0.03% or less; Si: more than 0% and 0.10% or less; Mn: more than 0% and 0.25% or less; Ni: 10.5%-14.0%; S: more than 0% and 0.010% or less; Al: more than 0% and 0.250% or less; REM: 0.002%-0.080%; and O: more than 0% and 0.0090% or less.

Abstract: Provided is a flux-cored wire for gas-shielded arc welding that contains specific amounts of C, Mn, TiO2, and Ni and specific amounts or less of P and S. The TiO2 has a ratio (?1/?2) of 0.90-1.50 when ?1 (mass %) is the content per wire total mass of particles having a size of 106 ?m or smaller and ?2 (mass %) is the content per wire total mass of particles having a size exceeding 106 ?m.

Abstract: Provided is a flux-cored wire for gas-shielded arc welding that contains, per wire total mass, specific amounts of C, Mn, TiO2 and specific amounts or less of P and S, and contains, in the flux, a specific amount of Ni per wire total mass. The Ni has a ratio (?1/?2) of 0.50-1.00 when ?1 (mass %) is the content per wire total mass of particles having a size of 106 ?m or less and ?2 (mass %) is the content per wire total mass of particles having a size exceeding 106 ?m.

Abstract: Provided is a flux-cored wire for gas-shielded arc welding that contains, per wire total mass, specific amounts of C, Mn, TiO2 and specific amounts or less of P and S, and contains, in the flux, a specific amount of Ni per wire total mass. The Ni has a ratio (?1/?2) of 0.50-1.00 when ?1 (mass %) is the content per wire total mass of particles having a size of 106 ?m or less and ?2 (mass %) is the content per wire total mass of particles having a size exceeding 106 ?m.

Abstract: Provided is a flux-cored wire for gas-shielded arc welding that contains specific amounts of C, Mn, TiO2, and Ni and specific amounts or less of P and S. The TiO2 has a ratio (?1/?2) of 0.90-1.50 when ?1 (mass %) is the content per wire total mass of particles having a size of 106 ?m or smaller and ?2 (mass %) is the content per wire total mass of particles having a size exceeding 106 ?m.

Abstract: This welded metal contains C, Si, Mn, Ni, Cr, Mo, Ti, B, O, N and Nb+V in specific amounts, respectively, with the balance being made up of Fe and unavoidable impurities. In this welded metal, carbides having circle-equivalent diameters of less than 0.40 ?m have an average circle-equivalent diameter of 0.10 ?m or more, and intergranular carbides having circle-equivalent diameters of 0.40 ?m or more have an average circle-equivalent diameter of 0.75 ?m or less.

Abstract: The present invention is a weld metal formed by gas shielded arc welding using a flux cored wire, the welded metal having a predetermined chemical composition, residual austenite particles being present in an amount of at least 2500 particles/mm2, and the volume fraction of residual austenite particles being at least 4.0%.

Abstract: A flux cored wire, which is obtained by filling the inside of a steel outer skin with a flux, is configured to have a composition that contains, in mass % relative to the total mass of the wire, 0.01-0.12% of C, 0.05% or more but less than 0.30% of Si, 1.0-3.5% of Mn, 0.1% or more but less than 1.0% of Ni, 0.10-0.30% of Mo, 0.1-0.9% of Cr, 4.5-8.5% of TiO2, 0.10-0.40% of SiO2, 0.03-0.23% of Al2O3 and 80% or more of Fe.

Abstract: Disclosed is a weld metal which is formed by gas-shielded arc welding using a flux-cored wire, and which has a specific chemical composition, in which retained austenite particles are present in a number density of 2500 per square millimeter or more and in a total volume fraction of 4.0% or more based on the total volume of entire structures of the weld metal. The weld metal has excellent hydrogen embrittlement resistance and is resistant to cracking at low temperatures even when the weld metal has a high strength.

Abstract: The weld metal of the present invention is formed by gas shield arc welding using a flux-cored wire, has a predetermined chemical component composition, and contains 20% or more of Ti. The amount of Ti-containing oxide particles having a circle-equivalent diameter of 0.15-1.0 ?m is at least 5000 per square mm, the amount of V per total mass of weld metal present as a compound within the weld metal is 0.002% or more, and the average circle equivalent diameter of V-containing carbide present in the weld metal is 15 nm or less.

Abstract: This welded metal contains 0.02-0.10% of C, 0.10-0.60% of Si, 0.90-2.5% of Mn, 0.20-2.00% of Ni, 0.05-1.0% of Cr, 0.10-1.50% of Mo, 0.040-0.15% of Ti, 0.0010-0.0050% of B, 0.030-0.100% of O and 0.015% or less (excluding 0%) of N, with the balance made up of iron and unavoidable impurities. The average circle-equivalent diameter of carbides having a circle-equivalent diameter of 0.40 ?m or more among the carbides present in the grain boundary of this welded metal is 0.75 ?m or less. Consequently, the present invention provides: a welded metal which exhibits excellent low-temperature toughness at lower temperatures, while having high strength after SR annealing, even in cases where gas sealed arc welding using a flux cored wire and having excellent work efficiency is applied; and a welded structure which is provided with this welded metal.

Abstract: The weld metal of the present invention has a given chemical composition, contains retained austenite particles in an amount of 2,500 grains/mm2 or more, and has a volume fraction of the retained austenite particles of 4.3 vol % or more and a content ratio of Cr and Mn, [Cr]/[Mn], of 0.20 or more. The weld metal has excellent resistance to hydrogen embrittlement even when the weld metal has a high tensile strength of more than 780 MPa.

Abstract: The present invention is a weld metal formed by gas shielded arc welding using a flux cored wire, the welded metal having a predetermined chemical composition, residual austenite particles being present in an amount of at least 2500 particles/mm2, and the volume fraction of residual austenite particles being at least 4.0%.

Abstract: The weld metal of the present invention is formed by gas shield arc welding using a flux-cored wire, has a predetermined chemical component composition, and contains 20% or more of Ti. The amount of Ti-containing oxide particles having a circle-equivalent diameter of 0.15-1.0 ?m is at least 5000 per square mm, the amount of V per total mass of weld metal present as a compound within the weld metal is 0.002% or more, and the average circle equivalent diameter of V-containing carbide present in the weld metal is 15 nm or less.

Abstract: Disclosed is a weld metal which is formed by gas-shielded arc welding using a flux-cored wire, and which has a specific chemical composition, in which retained austenite particles are present in a number density of 2500 per square millimeter or more and in a total volume fraction of 4.0% or more based on the total volume of entire structures of the weld metal. The weld metal has excellent hydrogen embrittlement resistance and is resistant to cracking at low temperatures even when the weld metal has a high strength.

Abstract: A method of crosslinking a rubber or plastic molding is described, which comprises irradiating the molding with electron beams to thereby limitedly crosslink only the surface of the molding. The molding thus-treated has excellent shape-sustaining properties and good surface appearance. Thus it is expected to find many applications in various fields.