Patent ID: 11959161
Assignee: FURUKAWA ELECTRIC CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 27:
28. 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.