Copper-based alloy material, production method therefor, and members or parts made of copper-based alloy material
AssigneesFurukawa Techno Material Co., Ltd., Tohoku University, Furukawa Electric Co., Ltd.
InventorsSumio Kise, Fumiyoshi Yamashita, Misato Fujii, Koji Ishikawa, Ryosuke Kainuma, Toshihiro Omori, Nobuyasu Matsumoto
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Abstract
A copper-based alloy material including a multiphase structure containing a matrix of a β 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.
Claims28
A copper-based alloy material comprising a multiphase structure comprising a matrix of a β phase and a precipitation phase of a B2 crystal structure dispersed in the matrix, wherein the copper-based alloy material comprises a composition comprising 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, and the matrix includes a L21 crystal structure,
- wherein a residual strain of the alloy material after loading and unloading of a stress applying a 5% strain to the alloy material is repeated 1000 times is equal to or less than 2.0%.
A copper-based alloy material comprising a multiphase structure comprising a matrix of a β phase and a precipitation phase of a B2 crystal structure dispersed in the matrix, wherein the copper-based alloy material comprises a composition comprising 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, and the matrix includes a L21 crystal structure, wherein when loading and unloading of a stress applying a 3% strain to the alloy material is repeated, a number of times the loading and unloading is repeated until the alloy material is fractured is equal to or greater than 1000.
A Cu—Al—Mn—Ni based alloy material comprising a multiphase structure comprising a matrix of a β phase and a precipitation phase of a B2 crystal structure dispersed in the matrix, wherein the Cu—Al—Mn—Ni based alloy material comprises a composition comprising 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, and the precipitation phase of the B2 crystal structure is a precipitation phase of NiAl, which does not precipitate in a Cu—Al—Mn ternary alloy,
- wherein a residual strain of the alloy material after loading and unloading of a stress applying a 5% strain to the alloy material is repeated 1000 times is equal to or less than 2.0%.
A Cu—Al—Mn—Ni based alloy material comprising a multiphase structure comprising a matrix of a β phase and a precipitation phase of a B2 crystal structure dispersed in the matrix, wherein the Cu—Al—Mn—Ni based alloy material comprises a composition comprising 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, and the precipitation phase of the B2 crystal structure is a precipitation phase of NiAl, which does not precipitate in a Cu—Al—Mn ternary alloy, wherein when loading and unloading of a stress applying a 3% strain to the alloy material is repeated, a number of times the loading and unloading is repeated until the alloy material is fractured is equal to or greater than 1000.
Dependencies are inferred from the claim text.