Identification of plasticity model parameters of the heat-affected zone in resistance spot welded martensitic boron steel

Tom Eller, L Greve, M.T. Andres, M Medricky, Vincent T. Meinders, Antonius H. van den Boogaard

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
5 Downloads (Pure)


A material model is developed that predicts the plastic behaviour of fully hardened 22MnB5 base material and the heat-affected zone (HAZ) material found around its corresponding resistance spot welds (RSWs). Main focus will be on an accurate representation of strain fields up to high strains, which is required for subsequent calibration of the fracture behaviour of both base material and HAZ. The plastic behaviour of the base material is calibrated using standard tensile tests and notched tensile tests and an inverse FEM optimization algorithm. The plastic behaviour of the HAZ material is characterized using a specially designed tensile specimen with a HAZ in the gage section. The exact location of the HAZ relative to the centre of the RSW is determined using microhardness measurements, which are also used for mapping of the material properties into an FE-model of the specimen. With the parameters of the base material known, and by assuming a linear relation between the hardness and the plasticity model parameters of base material and HAZ, the unknown HAZ parameters are determined using inverse FEM optimization. A coupon specimen with HAZ is used to validate the model at hand
Original languageEnglish
Title of host publicationSheet Metal 2015
EditorsJ. Duflou, A. Leacock, F. Micari, H. Hagenah
Place of PublicationErlangen-Nürnberg
PublisherTrans Tech Publications Ltd
Number of pages8
Publication statusPublished - 16 Mar 2015
Event16th International Conference on Sheet Metal, SheMet 2015 - Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen-Nürnberg, Germany
Duration: 16 Mar 201518 Mar 2015
Conference number: 16

Publication series

NameKey engineering materials
PublisherTrans Tech Publications
ISSN (Print)1013-9826


Conference16th International Conference on Sheet Metal, SheMet 2015
Abbreviated titleSheMet


  • METIS-310607
  • IR-96006


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