Grain Orientation Dependence of the Residual Lattice Strain in a Cold Rolled Interstitial-Free Steel

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Qingge Xie
  • Sarma Gorti
  • Jurij J. Sidor
  • Yu Guo An
  • Yan Dong Wang
  • Junhe Lian
  • Haoyu Lan
  • Ke An

Organisaatiot

  • Oak Ridge National Laboratory
  • Eötvös Loránd University
  • Tata Steel
  • University of Science and Technology Beijing
  • RWTH Aachen University
  • Jiangsu University of Science and Technology

Kuvaus

The experimentally measured grain-orientation-dependent residual lattice strains, evolved in an interstitial-free steel after 70% cold rolling reduction, are studied by means of crystal elastic visco-plastic finite element simulations, which provides a very satisfactory prediction of deformation texture. The calculated residual lattice strain pole figure matches well with the experimentally measured counterpart within the highest density regions of major texture components observed. Both experimental evidence and results of modeling clearly indicate that the residual lattice strain is orientation dependent, based on comprehensive information on the evolution of residual lattice strain in various crystallographic orientations during plastic deformation. It appears that in a cold rolled material, there is a general correlation between the stresses developed just prior to unloading and the residual lattice strains in particular directions. It is also shown that the cumulative plastic shear does not reveal a clear correlation with the components of residual lattice strain while presented in the normal correlation plot, however, this relationship can be better understood by means of the orientation distribution function of residual lattice strain, which can be derived from the neutron or X-ray diffraction experiments.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli1700408
JulkaisuSteel Research International
Vuosikerta89
Numero3
TilaJulkaistu - 1 maaliskuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 27285017