BROWSE

Related Researcher

Author's Photo

Shin, Hyung-Joon
Nanoscale Materials Science Lab (NMSL)
Research Interests
  • Scanning tunneling microscopy, surface science, interface science, nanomaterials

ITEM VIEW & DOWNLOAD

Analysis of ridging in ferritic stainless steel and aluminum alloy sheets

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Analysis of ridging in ferritic stainless steel and aluminum alloy sheets
Author
Shin, Hyung-JoonHong, SHLee, DN
Keywords
Aluminum alloy;  CPFEM;  Ferritic stainless steel;  Ridging;  Roping;  Texture
Issue Date
2004
Publisher
Trans Tech Publications Ltd.
Citation
KEY ENGINEERING MATERIALS, v.274-276, no., pp.11 - 17
Abstract
The columnar grains in ferritic stainless steel (FSS) slabs containing 11-17%Cr have the texture of 〈100〉//column axis. The columnar grains in FSS develop the rotated cube texture after plane strain rolling and are not easily recrystallized. In addition, the slab does not undergo α to γ or γ to α phase transformation during all processes. Therefore, long grain colonies with similar orientations develop from the columnar grains in the slab during cold rolling and survive even after annealing. These colonies and matrix are likely to show different plastic anisotropies, resulting in undesirable surface corrugations with peaks on one side of the sheet coinciding with valleys on the other side without change in the thickness, known as ridging, when pulled in the rolling direction (RD). The ridges have a depth in the range of 20-50 μm. In ridging, or roping, observed in AA6xxx AI alloys pulled in the transverse direction (TD), the distribution of ridges and valleys is irregular. The roping phenomenon is associated with in-plane banded clusters of the cube {001}〈100〉 and Goss {110}〈001〉 oriented grains. When pulled in TD, the Goss oriented grains are much harder than the cube oriented grains, and hence retains a higher surface level than the cube oriented grains. Thus, ridging is promoted by the presence of grain clusters of the cube and Goss components. The joint occurrence of soft and hard clusters stimulates the surface-strain heterogeneity, entailing ridging. The roping phenomena in FSS and AA6022 Al alloy sheets are analyzed by the crystal plasticity finite element method (CPFEM).
URI
https://scholarworks.unist.ac.kr/handle/201301/7761
DOI
10.4028/www.scientific.net/KEM.274-276.11
ISSN
1013-9826
Appears in Collections:
MSE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU