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Theoretical aspects of hot forming of sheet metals with graded characteristics

: Neugebauer, Reimund; Meza-Garcia, E.; Cai, H.; Lachmann, L.; Hauschildt, M.; Kohnhäuser, M.; Kreimeyer, M.; Michael, D.


International journal of materials research 102 (2011), No.8, pp.993-1000
ISSN: 1862-5282
Journal Article
Fraunhofer IWU ()
theoretische Untersuchung; Blechumformen; Warmumformen; Phasenumwandlung; Modellsimulation; Finite-Elemente-Methode; thermische Eigenschaft; Stahlblech; Mangan-Bor-Stahl

In the present work some essential aspects related to the simulation of phase transformation during hot forming simulation are discussed. A new material model used for hot forming simulation in commercial finite element code LS-DYNA was applied. Experimental values and bibliographical data were used in order to find optimum input parameters. Based on these parameters a hypothetical hot forming process for a graded component part was simulated. Using tools at varied temperatures and with different thermal properties seems to be a feasible method to achieve a better control of the phase transitions during hot forming.