Experimental Study on Joining by Forming of HCT590X + Z and EN-AW 6014 Sheets Using Cold Extruded Pin Structures

Due to stricter emission targets in the mobility sector and resulting trend towards lightweight construction order reduce weight consequently emissions, multi-material systems that allow a material be placed right quantity place are becoming increasingly important. One major challenge is holding back rapid widespread use of lack adequate joining processes suitable for dissimilar materials. Joining without auxiliary elements have advantage reduced assembly effort no additional added weight. Conventional elements, such as welding, clinching, or adhesives, reach their limits due different mechanical properties chemical incompatibilities. A process with potential field materials an element using pin structures. However, current manufacturing mostly time-consuming can only integrated barely into existing industrial specific properties. For this reason, present work investigates production single- multi-pin structures from high-strength dual-phase steel HCT590X + Z (DP600, t0 = 1.5 mm) by cold extrusion directly out sheet metal. These subsequently joined aluminium (EN AW-6014-T4, direct pressing. quantitative evaluation joint quality, tensile shear tests carried influence heights, number, arrangements, well strategies on strength experimentally evaluated. It proven single structure diameter mm average height 1.86 achieves maximum force 1025 N. The results reveal formation form-fit during pressing essential strength. By increasing number pins, linear increase could demonstrated, which independent arrangement