1000MPa-grade steel plate with matched obdurability/strength plasticity and manufacturing method of 1000MPa-grade steel plate

The invention belongs to the technical field of steel materials, and particularly discloses a 1000MPa-grade steel plate with matched obdurability/plasticity and a manufacturing method thereof.The steel plate comprises Fe, C, Si, Mn, P, S, Cu, Ni, Cr, Mo, V, Nb, Ti, N, O, Ca and inevitable inclusions, through the combination design of alloy elements and the TMCP + high-temperature T technology, the excellent 950MPa-grade ultrahigh-strength TMCP + T steel plate is obtained, and meanwhile the strength of the steel plate is improved. The strength, toughness/plasticity, strain aging embrittlement resistance and weldability of the steel plate are also excellent, the contradiction among the strength, plasticity, low-temperature toughness, strain aging embrittlement resistance and weldability of the ultrahigh-strength steel plate is successfully solved, and the safety, stability and fatigue resistance of a large heavy steel structure are improved. 本发明属于钢材料技术领域，具体公开了一种强韧性/强塑性匹配的1000MPa级钢板及其制造方法，其中钢板组成元素包括：Fe、C、Si、Mn、P