| 摘要 |
High strength hot dip galvanised complex phase steel strip, in mass percent, of the following elements: 0.13-0.19% C, 1.70-2.50% Mn, max 0.15% Si, 0.40-1.00% Al, 0.05-0.25% Cr, 0.01-0.05% Nb, max 0.10% P, max 0.004% Ca, max 0.05% S, max 0.007% N; and optionally at least one of the following elements: max 0.50% Ti, max 0.40% V, max 0.50% Mo, max 0.50% Ni, max 0.50% Cu, max 0.005% B, the balance being Fe and inevitable impurities; wherein 0.40%<Al+Si<1.05% and Mn+Cr>1.90%; and having a complex phase microstructure, in volume percent, including 8-12% retained austenite, 20-50% bainite, less than 10% martensite, the remainder being ferrite; method of producing same. |
