| 发明名称 |
Dual Phase Steel with Improved Properties |
| 摘要 |
A method for processing a dual phase steel sheet. The method includes heating the steel sheet to a first temperature (T1), cooling the steel sheet to a second temperature (T2), transitioning the steel sheet to a third temperature (T3), and cooling the steel sheet to room temperature. T1 is at least above the temperature at which the steel sheet transforms to austenite and ferrite. T2 is below the martensite start temperature (Ms). The cooling rate to T2 is sufficiently rapid to transform at least some austenite to martensite. |
| 申请公布号 |
US2016201159(A1) |
申请公布日期 |
2016.07.14 |
| 申请号 |
US201614995409 |
申请日期 |
2016.01.14 |
| 申请人 |
AK Steel Properties, Inc. |
发明人 |
Thomas Grant Aaron;Losz Jose Mauro Barros;Garza-Martinez Luis Gonzalo;Case Eddie Ray;Petersen Eric;Rastogi Prabhat |
| 分类号 |
C21D9/46;C23C2/26;C22C38/38;C22C38/32;C21D6/00;C22C38/26;C22C38/24;C22C38/22;C22C38/06;C22C38/02;C23C2/06;C22C38/28 |
主分类号 |
C21D9/46 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for processing a dual phase steel sheet, the method comprising:
(a) heating the steel sheet to a first temperature (T1), wherein T1 is at least above the temperature at which the steel sheet transforms to austenite and ferrite to form at least some austenite in the steel sheet; (b) cooling the steel sheet to a second temperature (T2) by cooling at a cooling rate, wherein T2 is below the martensite start temperature (Ms), wherein the cooling rate is sufficiently rapid to transform at least some the austenite to martensite; (c) transitioning the steel sheet to a third temperature (T3); and (e) cooling the steel sheet to room temperature. |
| 地址 |
West Chester OH US |
