Abstract: An object of the present invention is to provide a Cu—Ag alloy wire that has satisfactory hardness and specific resistance both suitable for probe pins. A Cu—Ag alloy wire that achieves the above object contains 0.1 to 30 mass % of Ag, with a remainder composed of Cu and unavoidable impurities. The Cu—Ag alloy wire has a Vickers hardness of 300 HV or more and a specific resistance of 3.0??·cm or less.

Abstract: The method includes slab-heating a steel slab to a temperature of higher than a ?-phase precipitation temperature and 1380° C. or lower, subjecting the steel slab to rough rolling including at least two passes of rolling at a predetermined temperature with an introduced sheet thickness true strain ?t of 0.50 or more and to finish rolling with a rolling finish temperature of 900° C. or higher to obtain a hot-rolled sheet, cooling the sheet for 1 second or longer at a cooling rate of 70° C./s or higher within 2 seconds after finish rolling, coiling the sheet at a coiling temperature of 600° C. or lower, performing hot-rolled sheet annealing for soaking at a predetermined soaking temperature, and then performing cold rolling, primary recrystallization annealing, and secondary recrystallization annealing.

Abstract: A continuous method of manufacturing permanent magnets and the permanent magnets created thereby. A fine powder is created from a combination of magnetic metals. The powder (a metal alloy) is placed in a non-magnetic container of any desired shape which could be, for example, a tube. The metal alloy and tube are swaged while a magnetic field is applied. Once swaging is complete, the metal alloy and tube are sintered and then cooled. Instead of sintering, a bonding agent can mixed into the powder. Following cooling, the metal alloy is magnetized by placing it between poles of powerful electromagnets with the desired field direction. The process of the invention enables mass-produced, cost-effective PM products, which are more robust, easily assembled into products, enables new “wire like” shapes with arbitrary magnetization direction.

Abstract: An R-T-B-based permanent magnet having improved magnetic properties contains R that represents at least one rare earth element essentially including Nd or Pr, T that represents at least one iron-group element essentially including Fe, B that represents boron, and M that represents at least one element selected from Ga, Al, Cu and Si. The R-T-B-based permanent magnet includes main-phase grains which include R2T14B crystals and two-grain grain boundaries each of which exists between adjacent two of the main-phase grains. The average thickness of the two-grain grain boundaries is 5 to 50 nm inclusive. The area ratio of an R6T13M compound in an arbitrary cross section is 0.50% or less (including 0%).

Abstract: A non-oriented electrical steel sheet is provided which has a chemical composition that contains, in mass %, C: 0.0050% or less, Si: 0.10 to 1.50%, Mn: 0.10 to 1.50%, sol. Al: 0.0050% or less, N: 0.0030% or less, S: 0.0040% or less, and O: 0.0050 to 0.0200%, and contains one or more elements selected from a group of La, Ce, Zr, Mg and Ca in a total amount of 0.0005 to 0.0200%, with the balance being Fe and impurities. A number density N of suitable oxide particles is 3.0×103 to 10×103 particles/cm2, and a number density n of oxide particles containing La and the like satisfies the expression n/N?0.01.

Abstract: This hot-rolled steel sheet has a desired chemical composition, a microstructure contains, in area %, ferrite: 10 to 30%, bainite: 40 to 85%, retained austenite: 5 to 30%, fresh martensite: 5% or less, and pearlite: 5% or less, the ferrite has an average particle size of 5.00 ?m or less, a difference between an average nanoindentation hardness of the ferrite and an average nanoindentation hardness of the bainite is 1,000 MPa or less, and the tensile strength is 980 MPa or more.

Abstract: An anisotropic rare earth sintered magnet represented by the formula (R1-aZra)x(Fe1-b COb)100-x-y(M11-cM2c)y where R is at least one element selected from rare earth elements and Sm is essential; M1 is at least one of V, Cr, Mn, Ni, Cu, Zn, Ga, Al, and Si; M2 is at least one of Ti, Nb, Mo, Hf, Ta, and W; and x, y, a, b, and c each satisfy certain conditions. The anisotropic rare earth sintered magnet includes 80% by volume or more of a main phase composed of a compound of a ThMn12 type crystal, the main phase having an average crystal grain size of 1 ?m or more, and containing an R-rich phase and an R(Fe,Co)2 phase in a grain boundary portion. A method for producing the anisotropic rare earth sintered magnet is also described.

Abstract: A method of producing a ferritic stainless steel sheet comprises subjecting an Al vapor deposited layer-equipped stainless steel sheet to a heat treatment at 600° C. to 1300° C. for 1 minute or more. The Al vapor deposited layer-equipped stainless steel sheet comprises a ferritic stainless steel and an Al vapor deposited layer thereon. The ferritic stainless steel sheet has a thickness of 100 ?m or less and a chemical composition containing, in mass %, C: ?0.030%, Si: ?1.0%, Mn: ?1.0%, P: ?0.040%, S: ?0.010%, Cr: 11.0-30.0%, Al: 4.0-6.5%, Ni: 0.05-0.50%, Mo: 0.01-6.0%, N: ?0.020% s, and Zr: 0.01-0.20% and/or Hf: 0.01-0.20%, with a balance consisting of Fe and inevitable impurities. A thickness of the Al vapor deposited layer per one side is 0.5-10.0 ?m.

Abstract: A new and improved method for producing grain-oriented electrical steel sheet enabling production of grain-oriented electrical steel sheet realizing high magnetic flux density and excellent in magnetic characteristics, that is, as one aspect, a method for producing grain-oriented electrical steel sheet comprising a hot rolling process, cold rolling process, primary recrystallization annealing process, finish annealing process, and flattening annealing process, wherein shot blasting treatment and/or leveling treatment and treatment for contact with a solution are performed, the solution contains Cu etc. in a predetermined amount, the pH is ?1.5 or more and less than 7, a solution temperature is 15° C. or more and 100° C. or less, and the time during which the steel sheet is dipped in the solution is 5 seconds or more and 200 seconds or less.

Abstract: This method for recovering a valuable metal from a used LIB includes: a step of adding, to an electrode assembly taken out of a detoxified used LIB, metallic zinc in an excess amount relative to a mass of the electrode assembly; a step of heating a mixture of the electrode assembly and the metallic zinc to form a molten metal; a step of taking out the molten metal and separating the molten metal into an alloy metal and a slag; and a step of heating the alloy metal to volatilize zinc in the alloy metal, and thereby, recovering an alloy metal of a valuable metal.

Abstract: A hot-stretch-reduced electric resistance welded pipe has a base metal portion and a weld portion, the base metal portion has a predetermined chemical composition, a Ti/N value obtained by dividing Ti content by N content is 3.0 or more, in a microstructure of the weld portion, the average grain diameter is 10.0 ?m or less, the area ratio of ferrite is 20% or more, and the remaining structure includes at least one or more of pearlite and bainite/martensite, and in a texture of the weld portion, the accumulation intensity of a {001} plane is 6.0 or less, and a critical cooling rate Vc90 of the base metal portion is 5° C./s to 90° C./s.

Abstract: A rare-earth cobalt permanent magnet having excellent magnetic characteristics, a method for manufacturing such a rare-earth cobalt permanent magnet, and a device including such a rare-earth cobalt permanent magnet are provided. A rare-earth cobalt permanent magnet consisting of 23 to 27 mass % of a rare-earth element R including Sm, 4.0 to 5.0 mass % of Cu, 22 to 27 mass % of Fe, 1.7 to 2.5 mass % of Zr, and a remainder consisting of Co and unavoidable impurities, in which the rare-earth cobalt permanent magnet includes a plurality of crystal grains and grain boundary parts, and a size of a cell structure constituting the crystal grain is 100 to 600 nm.

Abstract: The invention concerns a method for manufacturing a magnet from recycled magnets comprising the following steps of: providing: a 1st powder comprising grains of a magnetic phase TR2Fe14B, metal-based compounds and a grain boundary phase rich in rare earth, said 1st powder being free of heavy rare earth, a 2nd powder obtained from recycled magnets comprising heavy rare earths, the 2nd powder is subjected to a hydrogenation-disproportionation treatment, the 1st powder is mixed with the 2nd powder obtained at the end of step b), the mixture obtained at the end of step c) is subjected to a compacting step so as to obtain a compacted part, the compacted part obtained at the end of step d) is subjected to a sintering step so as to obtain a magnet.

Abstract: The steel material of the present disclosure includes a chemical composition consisting of, in mass %, C: 0.035% or less, Si: 1.00% or less, Mn: 1.00% or less, P: 0.030% or less, S: 0.0050% or less, sol. Al: 0.005 to 0.100%, N: 0.001 to 0.020%, Ni: 5.00 to 7.50%, Cr: 10.00 to 14.00%, Cu: 0.01 to less than 1.50%, Mo: 1.50 to 3.50%, V: 0.01 to 1.00%, Ti: 0.02 to 0.30%, Co: 0.01 to 0.50%, Ca: 0.0003 to 0.0030%, O: 0.0050% or less, W: 0 to 1.50%, Nb: 0 to 0.50%, B: 0 to 0.0050%, Mg: 0 to 0.0050%, and rare earth metals (REM): 0 to 0.020%, with the balance being Fe and impurities, in which a total number density of Mn sulfide having an equivalent circular diameter of 1.0 ?m or more and Ca sulfide having an equivalent circular diameter of 2.0 ?m or more is 0.50/mm2 or less.

Abstract: A permanent magnet manufacturing apparatus includes a compression molding mechanism and a magnetic field generating mechanism. The compression molding mechanism includes a pair of punches facing each other, and a die having a tubular shape into which the pair of punches are inserted. The magnetic field generating mechanism includes a pair of coils. The compression molding mechanism is disposed between the pair of coils. A raw material containing magnet powder is supplied into the die. The raw material in the die is compressed by the pair of punches while a magnetic field generated by at least one of the coils is applied to the raw material. A direction of the magnetic field applied to the raw material is changed by at least one operation selected from a group consisting of a movement of an entirety of the magnetic field generating mechanism, a rotation of the entirety of the magnetic field generating mechanism, and a rotation of at least one of the coils.

Abstract: A method for producing a dual-phase steel strip in a system having a finish-rolling train with a first stand group that includes at least one first finish-rolling stand, and a second stand group that includes at least one stand cooler. The system has a cooling section that includes a first cooling section group and a second cooling section group. Immediately following finish-rolling of a finish-rolled strip, the finish-rolled strip is fed to the second stand group, and force-cooled to a second exit temperature (TA2) so that upon exiting the second stand group the strip has a predominantly austenitic structure. Once the force-cooling stops, a ferritic and austenitic structure forms in the finish-rolled strip during transport. The finish-rolled strip is force-cooled to a fourth exit temperature (TA4) in the second cooling section group so that, upon exiting, the finish-rolled strip has a dual-phase structure composed of martensite and ferrite.

Abstract: The production method for a rare-earth sintered magnet according to the present disclosure comprises: a step for producing a molded article by compression-molding a slurry containing a rare-earth element-containing alloy powder and a dispersion medium using a wet-molding device; and a step for sintering the molded article. When the slurry is being poured into the inside of a space forming a cavity of the wet-molding device, a magnetic field is not applied. By pressing of the slurry, the dispersion medium contained in the slurry starts to be removed from the inside of the space.

Abstract: The method includes slab-heating a steel slab to a temperature of higher than a ?-phase precipitation temperature and 1380° C. or lower, subjecting the steel slab to rough rolling including at least two passes of rolling at a predetermined temperature with an introduced sheet thickness true strain ?t of 0.50 or more and to finish rolling with a rolling finish temperature of 900° C. or higher to obtain a hot-rolled sheet, cooling the hot-rolled sheet for 1 second or longer at a cooling rate of 70° C./s or higher within 2 seconds after finish rolling, coiling the sheet at a coiling temperature of 600° C. or lower, performing hot-rolled sheet annealing for soaking at a predetermined soaking temperature, and then performing cold rolling, primary recrystallization annealing, and secondary recrystallization annealing.

Abstract: A magnetic body of the coil component contains, as soft magnetic alloy grains, first grains whose alloy components are substantially Fe, Si, and Cr, and second grains which contain, as alloy components, Fe, Si, and an element other than Si or Cr that oxidizes more easily than Fe; the first grains have, on their surface, an amorphous oxide film containing Si and Cr; the second grains have, on their surface, a crystalline oxide layer containing the element other than Si or Cr that oxidizes more easily than Fe; and the crystalline oxide forms adhesion parts, each contacting a multiple number of the first grains via the amorphous oxide film thereof and coupling or bridging the multiple number of the first grains. The coil component can offer improved mechanical strength.

Abstract: A steel sheet with a tensile strength (TS) of 780 MPa or more and less than 1180 MPa, a member, and a method for producing them. In a region of the steel sheet within 4.9 ?m in the thickness direction, a region with a Si concentration not more than one-third of the Si concentration in the chemical composition of the steel sheet and with a Mn concentration not more than one-third of the Mn concentration in the chemical composition of the steel sheet has a thickness of 1.0 ?m or more. The lowest Si concentration LSi and the lowest Mn concentration LMn in the region within 4.9 ?m from the surface of the steel sheet and a Si concentration TSi and a Mn concentration TMn at a quarter thickness position of the steel sheet satisfy the following formula (1): LSi+LMn?(TSi+TMn)/4??(1).