| 摘要 |
<p>A method of producing a high tenacity metal wire material having improved bending and torsional properties as well as high toughness and excellent fatigue resistance is provided without losing tenacity and elongation property. In the method, when a heat treatment is performed at a temperature range of 90-300°C on a metal wire material of high-carbon steel containing 0.5-1.1% by mass of carbon atoms and having a processing strain of 2.5 or greater and tenacity of 3,000 MPa or greater, a relationship between heat treatment time t(s) and heat treatment temperature T(K) at said temperature range represented by the equation: 0.1 ‰¤ Ln(t) - 10100 / T+20 ‰¤ 11 is satisfied.</p> |
