| 摘要 |
A steel sheet having a tensile strength as high as 980 MPa or above. It has a structure consisting substantially of a ferrite phase only and has dispersed/precipitated carbide particles containing Ti, Mo, and V and having an average particle diameter smaller than 10 nm, the carbides containing Ti, Mo, and V having an average composition satisfying the relationship V/(Ti+Mo+V)>=0.3 (atomic ratio). The steel sheet is excellent in both elongation and stretch flangeability, and is suitable for use in application s where the sheet is pressed so as to have a complicated sectional shape, as i n the formation of automotive members. |
