基本信息:
- 专利标题： High-strength steel sheets excellent in hole-expandability and ductility
- 专利标题（中）：具有优异的孔扩展性和延展性的高强度钢板
- 申请号：US10576227 申请日：2003-12-26
- 公开(公告)号：US20070131320A1 公开(公告)日：2007-06-14
- 发明人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
- 申请人： Riki Okamoto , Hirokazu Taniguchi , Masashi Fukuda
- 优先权： JP2003-357278 20031017; JP2003-357279 20031017; JP2003-357280 20031017
- 国际申请： PCT/JP03/16967 WO 20031226
- 主分类号： C22C38/06
- IPC分类号： C22C38/06
摘要：
High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass %, C: not less than 0.01% and not more than 0.20%, Si: not more than 1.5%, Al: not more than 1.5%, Mn: not less than 0.5% and not more than 3.5%, P: not more than 0.2%, S: not less than 0.0005% and not more than 0.009%, N: not more than 0.009%, Mg: not less than 0.0006% and not more than 0.01%, 0: not more than 0.005% and Ti: not less than 0.01% and not more than 0.20% and/or Nb: not less than 0.01% and not more than 0.10%, with the balance consisting iron and unavoidable impurities, having Mn %, Mg %, S % and O % satisfying equations (1) to (3), and having the structure primarily comprising one or more of ferrite, bainite and martensite. [Mg%]≧([O%]/16×0.8)×24 (1) [S%]≦([Mg%]/24−[O%]/16×0.8+0.00012)×32 (2) [S%]≦0.0075/[Mn%] (3)
摘要（中）：
孔膨胀性和延展性优异的高强度钢板，其特征在于： 以质量％计含有：不小于0.01％且不大于0.20％的Si：不大于1.5％，Al：不大于1.5％，Mn：不小于0.5％且不大于3.5％ P：0.2％以下，S：0.0005％以上0.009％以下，N：0.009％以下，Mg：0.0006％以上0.01％以下0以下0.005以下 ％和Ti：不小于0.01％且不大于0.20％和/或Nb：不小于0.01％且不大于0.10％，余量由铁和不可避免的杂质组成，具有Mn％，Mg％，S％ 和O％满足方程（1）至（3），并且其结构主要包含铁素体，贝氏体和马氏体中的一种或多种。 <？in-line-formula description =“In-line Formulas”end =“lead”？> [Mg％]> =（[O％] / 16x0.8）x24（1）<？ =“直线公式”end =“tail”？> <？in-line-formula description =“In-line formula”end =“lead”？> [S％] <=（[Mg％] / [O％] / 16x0.8 + 0.00012）x32（2）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line 公式“end =”lead“？> [S％] <= 0.0075 / [Mn％]（3）<？in-line-formula description =”In-line Formulas“end =”tail“？>
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C22 | 冶金（铁的冶金入C21）；黑色或有色金属合金；合金或有色金属的处理 |
| ----C22C | 合金 |
| ------C22C38/00 | 铁基合金，例如合金钢 |
| --------C22C38/06 | .含铝的 |