| 摘要 |
PROBLEM TO BE SOLVED: To provide inexpensive copper alloy long bodies such as wires, bands and strips having excellent flexural fatigue characteristics, and a manufacturing method therefor by improving a technology of directly manufacturing a copper alloy wire from a molten metal by using a continuous heated mold casting method. SOLUTION: In the copper alloy long bodies such as wires, bars and strips having a uniaxially grain-oriented structure and a shape recovery function by the superelasticity by the shape memory effect of a martensitic reversible transformation mechanism against the bending deformation, the crystal orientation in the longitudinal direction of each crystal oriented in one direction is distributed within 15 deg. from the mean crystal orientation, and the long bodies have the excellent fatigue characteristics. |
