| 简介 |
A metal sheet component including (in % by weight) C : up to 0.5%, Si : 0.05-1%, Mn : 4-12%, Cr : 0.1-4%, Al : up to 3.5%, N : up to 0.05%, P : up to 0.5%, S : up to 0.01%, Cu, Ni : in total up to 2%, Ti, Nb, V : in total up to 0.5%, rare earth metals : up to 0.1%, and as a remainder, Fe and unavoidable impurities, wherein the content % C of C and the content % Cr of Cr meet the following condition : (10×% C)+% Cr<5.5%. In order to manufacture a metal sheet component, a flat steel product is heated to a heating temperature, which is at least 200° C. and at most 800° C., and then formed into the component by hot forming the flat steel product heated to the heating temperature, with the structure of the hot-formed metal sheet component having 5-50% by volume austenite and, as the remainder, martensite, tempered martensite and/or ferrite, wherein the ferrite proportion can also be 0, and the average grain diameter of the structure is less than 5 μm. |
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