High-cold-bending-tensile-strength 1000MPa-grade aluminum alloy coating hot-formed steel plate, production method, hot-formed steel member and application

The invention provides a 1000MPa-grade aluminum alloy coating hot forming steel plate with high cold bending tensile strength, a production method, a hot forming steel member and application. The hot forming steel plate comprises the following components: 0.05-0.15% of C, less than or equal to 0.50% of Si, 1.00-2.50% of Mn, less than or equal to 0.50% of Cr, less than or equal to 0.05% of P, less than or equal to 0.05% of S, 0.01-0.10% of Al, 0.01-0.10% of Ti, 0.001-0.01% of B, less than or equal to 0.01% of N, 0.01-0.06% of Nb, less than or equal to 0.30% of Mo and the balance of Fe and inevitable impurities. Compared with the prior art, the method has the advantages that chemical components and a production process are controlled, so that the oxidation state of the surface layer of a substrate and the thickness fluctuation of a FeAlSi inhibition layer before hot forming are controlled, finally, the size and the number of Kirkendall holes after hot forming are controlled, and the cold bending performance, th