Unitika Ltd.

Other

Tsuyoshi Masumoto

Hiroyuki Tomioka

Akihisa Inoue

Shinji Furukawa

Isamu Ogasawara

Kiyotsugu Maekawa

A fine amorphous metallic wire having a circular cross section and stability to a bias magnetic field, said wire being composed of an alloy having the following composition formula

Fine amorphous metal wires

Ni-Cr type allow materials comprising 10 to 50 atom % of Cr, 5 to 25 atom % of Al and/or Si, and the balance to make up 100 atom % of substantially pure Ni, excelling in cold workability, and exhibiting high electric resistance. These alloy materials possess very high electric resistance and small electrical resistance temperature coefficients over a wide temperature range from room temperature to elevated temperatures, and have excellent cold workability, mechanical properties, durability, ability to resist oxidation, corrosion, and fatigue as well as strain gauge sensitivity. The alloys are very useful as industrial materials of varying types including electrical resistors, precision resistors, and electrically heating wires used at elevated temperatures and bracing materials, reinforcing materials, and corrosionproofed materials used at elevated temperatures.

Ni-Cr type alloy material

Ni-based alloys comprising 8 to 34 atom % of Al, 2 to 70 atom % of one or more elements selected from the group consisting of Fe, Co, Mn, and Si (providing that each or total of Fe and Co is present in an amount of 2 to 70 atom % and/or each or total of Mn and Si is present in an amount of 2 to 25 atom %), and the balance to make up to 100 atom % of substantially pure Ni, and possessing great strength and high ductility. These alloys enjoy outstanding ductility and strength and, therefore, are ideally useful for various filter materials and composite materials.

Nickel alloy

Three basic types of iron-base alloys are disclosed as follows. An iron-base alloy having excellent workability comprising 2 to 60 atomic % of at least one of Ni and Mn, 7.5 to 60 atomic % of Cr, 0.5 to 12 atomic % of Al, 0.5 to 10 atomic % of at least one of C, B and P and the balance consisting substantially of Fe. An iron-base alloy having excellent workability comprising 2 to 60 atomic % of at least one of Ni and Mn, 7.5 to 60 atomic % of Cr, 1 to 15 atomic % of Si, 0.5 to 10 atomic % of at least one of C, B and P and the balance consisting substantially of Fe. Also provided is an iron-base alloy having excellent workability comprising 2 to 60 atomic % of at least one of Ni and Mn, 7.5 to 60 atomic % of Cr, 0.25 to 15 atomic % of Si, 0.5 to 10 atomic % of at least one of C, B and P, 0.02 to 0.5 atomic % of Al, and the balance consisting substantially of Fe. These Fe-base alloys are highly ductile and have high workability. By cold-working, they have very high tensile strength, and superior corrosion resistance and fatigue resistance to conventional Fe-base alloy materials. They are very useful as various industrial materials and composite materials.

Iron-base alloy materials having excellent workability

A Mn-based alloy is disclosed. The alloy is comprised of 4 to 30 atomic % of at least one element selected from the group consisting of Al, Ni, and Cr; 1 to 15 atomic % of C, 30 atomic % or less of at least one element selected from the group consisting of Co, Mo, W, Ta, Nb, V, Ti, and Zr; and the balance of alloy making up 100 atomic % being comprised substantially of Mn. The alloy has a nonequilibrium austenite phase. The alloy disclosed has high ductility and workability. The alloy is capable of being cold worked and has excellent tensile strength. The Mn-based alloy can be produced at substantially the same cost as any Fe-based alloy. The disclosed alloy is a nonmagnetic alloy which has been found to be very useful for nonmagnetic electromagnetic parts and composite materials.

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Kyoto, Japan

Hiroyuki Tomioka