| 摘要 |
<p>High strength low carbon steel wire rods of enhanced cold drawing property have a composite structure in which an acicular low temperature transformation phase comprising a martensite, bainite and/or the mixed structure thereof which comprises, by weight %, C : 0.02 - 0.30%, Si: less than 2.5%, Mn: less than 2.5% and the balance of iron and inevitable impurities and incidental constituents and which may partially contain retained austenite, is uniformly dispersed at the volume ratio of from 10 to 70% in the ferrite phase, and in which the weight of (C + N) in solution in the ferrite phase is less than 40 ppm.</p> |
