Advanced

Analysis of texture and R value variations in asymmetric rolling of if steel

Tóth, Laszlo S.; Beausir, Benoit; Orlov, Dmitry; Lapovok, Rimma and Haldar, Arunansu (2012) In Journal of Materials Processing Technology 212(2). p.509-515
Abstract

Asymmetric rolling (ASR) is a potential process to reach better grain refinement than in conventional rolling, thus, can lead to better mechanical properties. It is not known, however, how the introduction of a shear component will change the ideal orientations of the textures, and consequently, the evolution of plastic anisotropy. To understand the effect of the added shear on texture evolution in ASR, a stability analysis is carried out in orientation space and the variations in the position and strength of the ideal orientations are analysed as a function of the shear component. Then, modelling of R values is presented for various cases. On that basis, it is shown that there is an upper limit for the shear component in asymmetric... (More)

Asymmetric rolling (ASR) is a potential process to reach better grain refinement than in conventional rolling, thus, can lead to better mechanical properties. It is not known, however, how the introduction of a shear component will change the ideal orientations of the textures, and consequently, the evolution of plastic anisotropy. To understand the effect of the added shear on texture evolution in ASR, a stability analysis is carried out in orientation space and the variations in the position and strength of the ideal orientations are analysed as a function of the shear component. Then, modelling of R values is presented for various cases. On that basis, it is shown that there is an upper limit for the shear component in asymmetric rolling that still retains the 〈1 1 1〉 ND fibre (ND: direction normal to the sheet) which is good for formability. It is also found that better persistence of the ND fibre can be obtained by cyclically alternating the shear component. The theoretical results are well supported by comparison to experimental evidences.

(Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Asymmetric rolling, Ideal orientations, IF steel, Polycrystal modelling, R value, Texture
in
Journal of Materials Processing Technology
volume
212
issue
2
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:81855164589
ISSN
0924-0136
DOI
10.1016/j.jmatprotec.2011.10.018
language
English
LU publication?
no
id
c44bd757-9e44-4eba-aaba-e5a2bbbdac9b
date added to LUP
2016-06-20 15:37:33
date last changed
2017-09-10 05:07:09
@article{c44bd757-9e44-4eba-aaba-e5a2bbbdac9b,
  abstract     = {<p>Asymmetric rolling (ASR) is a potential process to reach better grain refinement than in conventional rolling, thus, can lead to better mechanical properties. It is not known, however, how the introduction of a shear component will change the ideal orientations of the textures, and consequently, the evolution of plastic anisotropy. To understand the effect of the added shear on texture evolution in ASR, a stability analysis is carried out in orientation space and the variations in the position and strength of the ideal orientations are analysed as a function of the shear component. Then, modelling of R values is presented for various cases. On that basis, it is shown that there is an upper limit for the shear component in asymmetric rolling that still retains the 〈1 1 1〉 ND fibre (ND: direction normal to the sheet) which is good for formability. It is also found that better persistence of the ND fibre can be obtained by cyclically alternating the shear component. The theoretical results are well supported by comparison to experimental evidences.</p>},
  author       = {Tóth, Laszlo S. and Beausir, Benoit and Orlov, Dmitry and Lapovok, Rimma and Haldar, Arunansu},
  issn         = {0924-0136},
  keyword      = {Asymmetric rolling,Ideal orientations,IF steel,Polycrystal modelling,R value,Texture},
  language     = {eng},
  number       = {2},
  pages        = {509--515},
  publisher    = {Elsevier},
  series       = {Journal of Materials Processing Technology},
  title        = {Analysis of texture and R value variations in asymmetric rolling of if steel},
  url          = {http://dx.doi.org/10.1016/j.jmatprotec.2011.10.018},
  volume       = {212},
  year         = {2012},
}