Salzgitter AG has made a further step in the area of TWIP-steels and the result is a density-reduced iron-manganese-aluminum-silicon alloy called HSD-steel. One of the main characteristics of HSD-steels is their relatively low manganese level, whilst still maintaining the good mechanical and technological properties typically exhibited by the iron-manganese TWIP-steels. With the evolution of seat structures under the focus of lightweight and safety performance more and more high strength steel were used as known from the body in white and the car chassis. The seat development of VW used with the modul seat micro alloyed steels with a gauge over 1,0 mm. The 2011 released VW Up was the first VW with seat side members in HCT980X and a thickness of 0,8 mm. This was the first step to significantly reduce weight, by maintaining the seat performance. As a contribution to the sustainable CO2-emissions reduction VW is forced to further reduce the weight of seat structures in combination with moderate costs. Based on the Volkswagen group modul seat structure the lightweight potential of the HSD-steel is discussed in the following article. In detail the performance of cross and side members are analyzed in finite element analysis, feasibility study, prototyping and real test to compare the HSD-steels to conventional serial steels.
High alloyed FeMnAlSi-steel - automotive lightweight potential for complex parts
Hochlegierter FeMnAlSi-Stahl - Leichtbaupotential für komplexe Fahrzeugbauteile
2014
6 Seiten, 4 Bilder, 1 Tabelle, 5 Quellen
Conference paper
English
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