Adiabatic blanking of advanced high-strength steels

Schmitz, F.; Winter, S.; Clausmeyer, T.; Wagner, M. F.-X.; Tekkaya, A. E.

doi:10.1016/j.cirp.2020.03.007

Adiabatic blanking of advanced high-strength steels (bibtex)

by F. Schmitz, S. Winter, T. Clausmeyer, M. F.-X. Wagner, A. E. Tekkaya

Abstract:

Adiabatic blanking of advanced high-strength steels with initial flow stresses above 1300 MPa is investigated. The blanked edge exhibits a unique S-shape. Localisation and properties of shear bands are analysed in shear-compression tests. A shear-compression stress state before separation leads to blanked edges without fracture zone, burr, or roll-over. Numerical modelling predicts the characteristic shape of the blanked edge satisfactorily. Physics-based models reveal that the strain rate sensitivity of the workpiece material is the key parameter affecting the width and the surface hardness of the shear band. Stress triaxiality and strain rate sensitivity determine the minimum size of radii in complex parts blanked without failure.

Reference:

Schmitz, F., Winter, S., Clausmeyer, T., Wagner, M. F.-X., Tekkaya, A. E.: Adiabatic blanking of advanced high-strength steels, CIRP Annals 69, 269-272, 2020.

Bibtex Entry:

@Article{Schmitz2020,
  author    = {Schmitz, F. and Winter, S. and Clausmeyer, T. and Wagner, M. F.-X. and Tekkaya, A. E.},
  journal   = {{CIRP} Annals},
  title     = {Adiabatic blanking of advanced high-strength steels},
  year      = {2020},
  number    = {1},
  pages     = {269--272},
  volume    = {69},
  abstract  = {Adiabatic blanking of advanced high-strength steels with initial flow stresses above 1300 MPa is investigated. The blanked edge exhibits a unique S-shape. Localisation and properties of shear bands are analysed in shear-compression tests. A shear-compression stress state before separation leads to blanked edges without fracture zone, burr, or roll-over. Numerical modelling predicts the characteristic shape of the blanked edge satisfactorily. Physics-based models reveal that the strain rate sensitivity of the workpiece material is the key parameter affecting the width and the surface hardness of the shear band. Stress triaxiality and strain rate sensitivity determine the minimum size of radii in complex parts blanked without failure.},
  doi       = {10.1016/j.cirp.2020.03.007},
  publisher = {Elsevier {BV}},
}