| 发明名称 |
HOT-DIP GALVANIZED STEEL SHEET AND MANUFACTURING METHOD THEREOF |
| 摘要 |
A hot-dip galvanized steel sheet includes a steel sheet and a hot-dip galvanized layer arranged on the steel sheet, in which the Si content and the Al content by mass% of components of the steel sheet satisfy a relationship 0.5<Si+Al <1.0, and a metallographic structure of the steel sheet satisfies a relationship of { (n2)2/3 ×d2}/{(n1)2/3×d1} ×1n(H2/H1)<0.3 when the n1 is the number of a MnS of a surface portion of the steel sheet, the d1 µm is an average equivalent circle diameter of the MnS in the surface portion of the steel sheet, the H1 GPa is a hardness of a martensite of the surface portion of the steel sheet, the n2 is the number of the MnS of a center portion of the steel sheet, the d2 µm is an average equivalent circle diameter of the MnS in the center portion of the steel sheet, and the H2 GPa is the hardness of the martensite of the center portion of the steel sheet. |
| 申请公布号 |
CA2821703(C) |
申请公布日期 |
2016.08.09 |
| 申请号 |
CA20112821703 |
申请日期 |
2011.12.15 |
| 申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
NONAKA, TOSHIKI;OGAWA, TOSHIO;FUJITA, NOBUHIRO |
| 分类号 |
C22C38/06;C21D8/02;C21D9/46;C22C38/38 |
主分类号 |
C22C38/06 |
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