Abstract: A component includes a sub-region, where the component is produced at least in the sub-region by an additive manufacturing process. The sub-region is produced from an aluminum alloy which has 12% by weight to 40% by weight silicon, 0.3% by weight to 4% by weight copper, 0.2% by weight to 0.7% by weight magnesium, at most 1% by weight iron, at most 0.5% by weight zirconium, and a remainder which includes aluminum and further accompanying elements and/or production-related impurities that each have a mass fraction of at most 0.3 percent individually and that in total have a mass fraction of at most 1.5 percent.

Abstract: A crankcase for a reciprocating piston engine, in particular of a motor vehicle, includes at least first one wall region that has a greater wall thickness than at least one second wall region of the crankcase that adjoins the first wall region. The crankcase is produced from an aluminum alloy and by at least mainly laminar die casting and is heat-treated completely or heat-treated completely and additionally locally or heat-treated only locally.

Abstract: A crankcase for a reciprocating piston engine, in particular of a motor vehicle, includes at least first one wall region that has a greater wall thickness than at least one second wall region of the crankcase that adjoins the first wall region. The crankcase is produced from an aluminum alloy and by at least mainly laminar die casting and is heat-treated completely or heat-treated completely and additionally locally or heat-treated only locally.

Abstract: A torsion bar spring of spring steel with a high carbon content is connected fixedly in terms of rotation at its ends to structural parts. The structural parts are mounted pivotably in relation to one another. The torsion bar spring is connected in a materially integral manner to at least one of the structural parts by friction welding, condenser discharge welding, diffusion welding or medium-frequency pressure welding via intermediate pieces. As a result, a play-free and wear-free connection between the torsion bar spring and the structural part can be made in a confined construction space, and the connection is suitable for absorbing high loads, particularly alternating loads.

Abstract: A process for joining or welding components made from case-hardened steel to one another or to components made from cast iron uses a nickel-containing filler. The components are not prepared for the welding operation, i.e., the components do not undergo at least partial abrasion of surfaces to be joined.

Abstract: A process for joining or welding components made from case-hardened steel to one another or to components made from cast iron uses a nickel-containing filler. The components are not prepared for the welding operation, i.e., the components do not undergo at least partial abrasion of surfaces to be joined.