Abstract: A tailored welded blank produced from at least two blank parts, where at least one is a press-hardenable manganese-boron steel and at least one has a coating of aluminum or an aluminum-based alloy. The parts are welded by laser-beam welding or hybrid laser/gas-metal-arc welding, while retaining the coating, using shielding gas and a filler wire having in % by weight: C: 0.41 to 0.9; Si: 0.4 to 4; Mn: 0.4 to 3; optionally Cr: 0 to 10; and with optional alloying of one or more of: Mo: 0.01 to 1.0; B: 0.0008 to 0.0040; Ti: 2.5×B<=Ti<=5×B; V: 0.01 to 0.4; Nb: 0.01 to 0.2; W: 0.01 to 0.2; the remainder Fe and unavoidable impurities. The high proportion of C and Cr or additionally or alternatively of Mo, V, Nb and/or W enables hardening by carbide formation in a weld-seam region after welding.

Abstract: A deformation-hardened component is made of galvanized steel by cutting a plate from a steel strip or steel sheet coated with zinc or with a zinc-based alloy and subsequently heating the plate to a deformation temperature above Ac3 for deformation and hardening. The galvanized steel has an at least partially martensitic transformation structure and includes as a chemical composition in wt. % C: 0.10-0.50, Si: 0.01-0.50, Mn: 0.50-2.50, P<0.02, S<0.01, N<0.01, Al: 0.015-0.100, B<0.004, remainder iron, including unavoidable smelting-induced, steel-accompanying elements. The chemical composition further includes at least one element selected from the group consisting of Nb, V, Ti, with a sum of the contents Nb+V+Ti being in a range of 0.01 to 0.20 wt. %. The structure of the steel after deformation-hardening has an average grain size of the former austenite grains of <15 ?m.

Abstract: A method for producing a component by hot forming a pre-product made of steel is disclosed. The pre-product is heated to a forming temperature and is then reshaped, said component having a bainitic microstructure with a minimum tensile strength of 800 MPa after the forming process. In the process, the pre-product with the specified alloy composition is heated to a temperature below the Ac1 transformation temperature, said pre-product already consisting of a steel with a microstructure made of at least 50% bainite.