Investigation of the progressive hot die stamping of a complex boron steel part using numerical simulations and Gleeble tests

  • N. Demazel
  • H. LaurentEmail author
  • J. Coër
  • M. Carin
  • P. Le Masson
  • J. Favero
  • R. Canivenc
  • H. Salmon-Legagneur


During hot progressive stamping processes, quenchable steels undergo complex thermomechanical forming cycles which include transfer operations, local cooling and heating steps, and various successive contact conditions with the tools. In order to define appropriate process parameters, it is therefore necessary to define the limits of the thermomechanical cycles to which the steels can be subjected. Using the commercial FE software PAM-STAMP 2GTM, a fully coupled thermomechanical-metallurgical numerical model for the progressive hot stamping process was applied to a complex automotive part called a heel board. These simulations were performed in order to define the successive heating/forming/quenching steps required to form this part. The numerical model was then validated by simulating the thermomechanical cycles undergone at critical points on this part on a Gleeble machine using a specially designed sample and monitoring the cooling rate during the quenching steps. The Vickers hardness distribution and the microstructural evolution of the samples were analyzed by testing whether the part was completely in the martensitic state at the end of the multi-step operations. The heating/forming/quenching steps applied to the phase transformation kinetics showed that the mechanical and geometrical characteristics required for the forming of the heel board were achieved.


Progressive hot stamping process Boron steel Gleeble machine Martensitic and austenitic state Quenching steps 


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These studies were carried out in the framework of the ANR PRICECAT project, which is supported by the National Agency of Research (ANR) under the ANR-13-RMNP-0009-03. The authors would like to thank A. Jegat and W. Berckmans for carrying out the tests on the Gleeble machine.


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© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.UMR CNRS 6027, IRDLUniversity Bretagne SudLorientFrance
  2. 2.NAVAL GROUP - LorientLorientFrance
  3. 3.ArcelorMittal, Global Research and Development MontataireMontataire CedexFrance

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