Advanced

Influence of process parameters on grain refinement in AA1050 aluminum during cold rolling

Hallberg, Håkan LU (2013) In International Journal of Mechanical Sciences 66. p.260-272
Abstract
The microstructure evolution during cold rolling of commercial purity AA1050 aluminum is investigated through numerical simulations. A finite strain elasto-viscoplastic constitutive model is employed, where the dislocation density and average grain size are taken as variables characterizing the deformed microstructure. Grain size evolution due to dynamic recrystallization is considered and the microstructure quantities are allowed to influence the macroscopic material behavior in terms of the flow stress and deformation-rate dependence. The effects of such process parameters as rolling friction, thickness reduction in each rolling pass and amount of rolling asymmetry are discussed. The results indicate that grain refinement due to dynamic... (More)
The microstructure evolution during cold rolling of commercial purity AA1050 aluminum is investigated through numerical simulations. A finite strain elasto-viscoplastic constitutive model is employed, where the dislocation density and average grain size are taken as variables characterizing the deformed microstructure. Grain size evolution due to dynamic recrystallization is considered and the microstructure quantities are allowed to influence the macroscopic material behavior in terms of the flow stress and deformation-rate dependence. The effects of such process parameters as rolling friction, thickness reduction in each rolling pass and amount of rolling asymmetry are discussed. The results indicate that grain refinement due to dynamic recrystallization is most significantly affected by the amount of thickness reduction in each pass and the level of rolling friction and to a lesser extent by the asymmetry of the rolling process. An increasing degree of asymmetry will, however, reduce the variations in grain size through the sheet thickness and leave the material more homogeneously recrystallized. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Mechanical Sciences
volume
66
pages
260 - 272
publisher
Elsevier
external identifiers
  • wos:000316974700028
  • scopus:84875220685
ISSN
1879-2162
DOI
10.1016/j.ijmecsci.2012.11.016
language
English
LU publication?
yes
id
a572125a-a3c8-4d1d-9b4a-6fbbbb4cfb87 (old id 3457146)
date added to LUP
2013-02-26 07:49:50
date last changed
2019-03-12 01:00:49
@article{a572125a-a3c8-4d1d-9b4a-6fbbbb4cfb87,
  abstract     = {The microstructure evolution during cold rolling of commercial purity AA1050 aluminum is investigated through numerical simulations. A finite strain elasto-viscoplastic constitutive model is employed, where the dislocation density and average grain size are taken as variables characterizing the deformed microstructure. Grain size evolution due to dynamic recrystallization is considered and the microstructure quantities are allowed to influence the macroscopic material behavior in terms of the flow stress and deformation-rate dependence. The effects of such process parameters as rolling friction, thickness reduction in each rolling pass and amount of rolling asymmetry are discussed. The results indicate that grain refinement due to dynamic recrystallization is most significantly affected by the amount of thickness reduction in each pass and the level of rolling friction and to a lesser extent by the asymmetry of the rolling process. An increasing degree of asymmetry will, however, reduce the variations in grain size through the sheet thickness and leave the material more homogeneously recrystallized.},
  author       = {Hallberg, Håkan},
  issn         = {1879-2162},
  language     = {eng},
  pages        = {260--272},
  publisher    = {Elsevier},
  series       = {International Journal of Mechanical Sciences},
  title        = {Influence of process parameters on grain refinement in AA1050 aluminum during cold rolling},
  url          = {http://dx.doi.org/10.1016/j.ijmecsci.2012.11.016},
  volume       = {66},
  year         = {2013},
}