Abstract: A copper-based alloy material including a multiphase structure containing a matrix of a ? phase and a precipitation phase of a B2-type crystal structure dispersed in the matrix, where the copper-based alloy material includes a composition containing 8.6 to 12.6% by mass of Al, 2.9 to 8.9% by mass of Mn, 3.2 to 10.0% by mass of Ni, and Cu.

Abstract: A formed body of Cu—Al—Mn-based shape-memory alloy may include a screw portion, wherein the screw portion is a form-rolled portion. A method for producing a formed body of Cu—Al—Mn-based shape-memory alloy may involve forming a screw portion having superelasticity by plastically working at least a portion of a material for the formed body with form-rolling in a state that a crystal structure is an A2-type structure and then, subjecting heat-treatment so as to convert the A2-type crystal structure into an L21-type crystal structure. The screw portion can be formed with good working property, and has excellent fatigue resistance and breaking resistance.

Abstract: A Ni—Ti-based alloy material includes a matrix phase consisting essentially of a Ni—Ti-based alloy and having a B2 type crystal structure. A nonmetallic inclusion is present in the matrix phase, in which 99% by mass or more of the nonmetallic inclusion is a TiC-based inclusion having a NaCl type crystal structure, the TiC-based inclusion has a lattice misfit (?) in a range of 0.4238 or more and 0.4259 or less. The lattice misfit (?) is represented by Expression ?=(a1?a2)/a2, where a1 is a lattice constant (?) of the TiC-based inclusion and a2 is a lattice constant (?) of the matrix phase.

Abstract: A Ti—Ni-based alloy, which has a torsion angle for Interface I that is a junction plane between habit plane variants of a martensitic phase, of less than 1.00°; a wire, an electrically conductive actuator, and a temperature sensor, each of which uses that alloy; and a method of producing the Ti—Ni-based alloy.

Abstract: A formed body of Cu—Al—Mn-based shape-memory alloy may include a screw portion, wherein the screw portion is a form-rolled portion. A method for producing a formed body of Cu—Al—Mn-based shape-memory alloy may involve forming a screw portion having superelasticity by plastically working at least a portion of a material for the formed body with form-rolling in a state that a crystal structure is an A2-type structure and then, subjecting heat-treatment so as to convert the A2-type crystal structure into an L21-type crystal structure. The screw portion can be formed with good working property, and has excellent fatigue resistance and breaking resistance.

Abstract: The present invention provides a highly fracture resistant, fatigue resistant copper-based alloy material and the like for which, for example, even when the material is subjected to repeated deformation consisting of loading of stress for applying a shape-memory alloy-specific strain and unloading of same followed return to the original shape, the alloy material is not susceptible to persistence of such strain. This copper-based alloy material has a multiphase structure in which a B2-type crystal structure precipitated phase is dispersed in a ?-phase-comprising matrix.

Abstract: A Cu—Al—Mn-based alloy material (1) having a composition comprising: given contents of Al and Mn, and a given total content of at least one selected from Ni and the like; with the balance being Cu and unavoidable impurities, wherein the alloy material has a shape elongated in the working direction (RD), wherein a grain length ax in the RD is R/2 or less to the width or diameter (R), a grain length bx in a direction perpendicular to the RD is R/4 or less, and the amount of grains X (2) is 15% or less, and wherein a grain length a in the RD and a grain length b in the direction perpendicular to the RD satisfy: a?b, and an angle formed by the normal line of the (111) plane and the RD is 15° or larger, the amount of grains Y? (3) is 85% or more.

Abstract: A Fe-based shape memory alloy material, containing 25 atom % to 42 atom % of Mn, 9 atom % to 13 atom % of Al, 5 atom % to 12 atom % of Ni, and 5.1 atom % to 15 atom % of Cr, with the balance being Fe and unavoidable impurities; a method of producing the same; and a wire material and sheet material composed of the alloy material.

Abstract: A Ti—Ni-based alloy, which has a torsion angle for Interface I that is a junction plane between habit plane variants of a martensitic phase, of less than 1.00°; a wire, an electrically conductive actuator, and a temperature sensor, each of which uses that alloy; and a method of producing the Ti—Ni-based alloy.

Abstract: A wrought material containing a Cu—Al—Mn-based alloy, in which an existence frequency of a coincidence grain boundary with a ? value of 3 or less is 35% or more but 75% or less, and which has a recrystallized microstructure substantially formed from a ? single phase; and the use thereof.

Abstract: A Cu—Al—Mn-based alloy having superelastic characteristics and having a recrystallized texture substantially formed of a ? single phase, in which 70% or more of crystal grains is within a range of 0° to 50° in a deviation angle from <001> orientation of a crystalline orientation measured in a working direction by electron back-scatter diffraction patterning.

Abstract: A Fe-based shape memory alloy material, containing 25 atom % to 42 atom % of Mn, 9 atom % to 13 atom % of Al, 5 atom % to 12 atom % of Ni, and 5.1 atom % to 15 atom % of Cr, with the balance being Fe and unavoidable impurities; a method of producing the same; and a wire material and sheet material composed of the alloy material.

Abstract: A hallux valgus correction device (1) for correcting hallux valgus, the hallux valgus correction device including: a corrector (10) made of a superelastic alloy; and a fixture (2, 3, and 4) formed from a fabric to attach the corrector, in which the corrector has a hinge part (11) that is rotationally movable in the bending direction and the stretching direction of one toe or a plurality of toes in need of correction.

Abstract: A Cu—Al—Mn-based alloy material (1) having a composition comprising: given contents of Al and Mn, and a given total content of at least one selected from Ni and the like; with the balance being Cu and unavoidable impurities, wherein the alloy material has a shape elongated in the working direction (RD), wherein a grain length ax in the RD is R/2 or less to the width or diameter (R), a grain length bx in a direction perpendicular to the RD is R/4 or less, and the amount of grains X (2) is 15% or less, and wherein a grain length a in the RD and a grain length b in the direction perpendicular to the RD satisfy: a?b, and an angle formed by the normal line of the (111) plane and the RD is 15° or larger, the amount of grains Y? (3) is 85% or more.

Abstract: A wrought material containing a Cu—Al—Mn-based alloy, in which an existence frequency of a coincidence grain boundary with a ? value of 3 or less is 35% or more but 75% or less, and which has a recrystallized microstructure substantially formed from a ? single phase; and the use thereof.

Abstract: A Cu—Al—Mn-based alloy rod having superelastic characteristics and having a recrystallized microstructure substantially formed of a ? single phase, wherein, for a longitudinal direction cross section of the rod, a region, in which a grain size of each of grains is a radius of the rod or more, is 90% or more of the longitudinal direction cross section at any location of the rod, and wherein an average grain size of the grains, in which the grain size is the radius of the rod or more, is 80% or more of a diameter of the rod; a Cu—Al—Mn-based alloy sheet; a production method thereof; a vibration damping material using thereof; a vibration damping structure constructed by using the vibration damping material.

Abstract: A Cu—Al—Mn-based alloy having superelastic characteristics and having a recrystallized texture substantially formed of a ? single phase, in which 70% or more of crystal grains is within a range of 0° to 50° in a deviation angle from <001> orientation of a crystalline orientation measured in a working direction by electron back-scatter diffraction patterning.