To provide an in situ fiber reinforced copper alloy combining high strength with high electric conductivity, in which the problem of the brittleness of chromium in a copper-chromium alloy which is considered to be exclusively hopeful in respect of cost performance is solved, in an in situ metal fiber reinforced copper alloy.
A two-layer fiber 2, constituted of two phases of chromium phase 4 and alpha-iron phase 5, is formed in situ in a copper matrix 1 to reinforce the copper matrix 1 with the fiber. This in situ fiber reinforced copper alloy can be formed into fine wire of ≤0.6mm diameter. By this method, the in situ fiber reinforced copper matrix composite with high electric conductivity and high strength, having both characteristics of ≥80kgf/mm2 mechanical strength and ≥60% IACS electric conductivity, can be obtained, and further, this composite material can be formed into fine wire of ≤0.6mm. Therefore this composite material can be suitably used, e.g. for a cable for the drive or control of a robot and can remarkably improve its mechanical durability.
NINOMIYA RYUJI
SUZUOKA SHUZO
KOBAYASHI SHIGERU
YOSHINOKAWA DENSEN KK
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