Relation between Ridging and Texture Components in Al-Mg-Si Alloy |
| Journal |
Materials Science Forum (Volumes 558 - 559) |
| Volume |
Recrystallization and Grain Growth III |
| Edited by |
S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara |
| Pages |
71-76 |
| DOI |
10.4028/www.scientific.net/MSF.558-559.71 |
| Online since |
October, 2007 |
| Authors |
Kenichi Ikeda,
Takahiro Yoshihara,
Naoki Takata,
Hideharu Nakashima
|
| Keywords |
Al-Mg-Si Alloy, Recrystallization, Ridging, SEM/EBSD, Texture |
| Abstract |
Al-Mg-Si alloy is the suitable material for the automotive body application. However, it is
found that a rope-like profile (ridging) develops when the Al-Mg-Si alloy sheet is stretched along the
transverse direction. In this study, in order to clarify the formation process of ridging developed in
Al-Mg-Si alloy, the relation between ridging and texture components of the sheet was investigated by
3D profile microscope and SEM/EBSD method. It was found that the ridging developed remarkably
in the hot-rolled (at higher temperature) and annealed sheets. In ridging sample, there was the band of
cube oriented grains (cube band). It was also found that the region of cube band corresponded to the
ridges and valleys which caused a rope-like profile in the sheets. It could be thought that the
difference of plastic deformability between cube-oriented grains and other oriented grains led to the
development of ridging. This assumption is supported by the lower Taylor factor of cube oriented
grains than other oriented grains. From these results, it was concluded that the development of ridging
was strongly affected by the distribution of cube oriented grains. |
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