TY - JOUR

T1 - Additional forming elements for a local reinforcement in deep drawn parts

AU - Voges-Schwieger, Kathrin

AU - Hübner, Sven

AU - Behrens, Bernd Arno

N1 - Funding information: We would like to thank the German Research Foundation DFG (Deutsche Forschungsgemeinschaft) for funding the SFB 675, work package A1. Sincere thanks to the Institute of Production Engineering and Machine Tools of the Leibniz Universität Hannover and the IMAB of the Technische Universität Clausthal.

PY - 2010/6/12

Y1 - 2010/6/12

N2 - Following the concept of lightweight construction in transportation vehicles is one approach for the reduction of CO2 pollution. In the collaborative research centre 675 several new research proposals are in progress. One goal is the utilization of phase transformation in metastable austenitic steels. The generation of local α'-martensitic reinforcements in austenitic ductile regions enables the production of load-adapted components for the application in automobile safety and transport vehicles. The reinforcement of metastable austenitic steels during deep drawing to utilize the α'-martensitic phase transformation in combination with the work-hardening effect is one concept of lightweight construction. One aim concerning this contribution is the material characterization of those local straininduced reinforcements in sheet metal. Moreover, the parts were produced by different forming temperatures e.g. T = -20°C, T = 20°C, T = 80°C and T = 100°C. After a short introduction in the field of enhancing stiffness during forming processes, the residual stresses between reinforcements are determined by using an X-ray diffractometer. Focussed on the effect of temperature, compression and tensile strains are very significant for the application of this new way of lightweight construction. To assess the cyclic behaviour of these reinforced parts, pulser tests were also accomplished.

AB - Following the concept of lightweight construction in transportation vehicles is one approach for the reduction of CO2 pollution. In the collaborative research centre 675 several new research proposals are in progress. One goal is the utilization of phase transformation in metastable austenitic steels. The generation of local α'-martensitic reinforcements in austenitic ductile regions enables the production of load-adapted components for the application in automobile safety and transport vehicles. The reinforcement of metastable austenitic steels during deep drawing to utilize the α'-martensitic phase transformation in combination with the work-hardening effect is one concept of lightweight construction. One aim concerning this contribution is the material characterization of those local straininduced reinforcements in sheet metal. Moreover, the parts were produced by different forming temperatures e.g. T = -20°C, T = 20°C, T = 80°C and T = 100°C. After a short introduction in the field of enhancing stiffness during forming processes, the residual stresses between reinforcements are determined by using an X-ray diffractometer. Focussed on the effect of temperature, compression and tensile strains are very significant for the application of this new way of lightweight construction. To assess the cyclic behaviour of these reinforced parts, pulser tests were also accomplished.

KW - α'-martensitic reinforcements

KW - Deep drawing

KW - Strain-induced phase transformation

UR - http://www.scopus.com/inward/record.url?scp=78651566769&partnerID=8YFLogxK

U2 - 10.1007/s12289-010-0897-7

DO - 10.1007/s12289-010-0897-7

M3 - Article

AN - SCOPUS:78651566769

VL - 3

SP - 825

EP - 828

JO - International Journal of Material Forming

JF - International Journal of Material Forming

SN - 1960-6206

IS - SUPPL. 1

ER -