Superhigh-strength superfine wire, and reinforcing materials and composite materials incorporating the same

摘要

The invention relates to a superhigh-strength superfine wire having a high fatigue strength, a diameter of 160 mu m or below, a strength of 300 kg/mm2 or above and minute, composite fibrous structure consisting of continuous ferrite and a continuous low-temperature transformed phase consisting of martensite, bainite or a mixture of martensite and bainite, composed of 0.01 to 0.50% by weight C, 1.5% by weight or less Si, 5.0% by weight or less Mn, and the rest part (balance) of iron and inevitable impurities; having a fibrous microstructure consisting of fibers of a unidirectional arrangement of microcells of sizes in the range of 5 to 100 ANGSTROM formed by hard drawing at a reduction ratio of 99% or above, arranged at intervals in the range of 50 to 1000 ANGSTROM .