Relation between Ridging and Texture Components in Al-Mg-Si Alloy

Kenichi Ikeda; Takahiro Yoshihara; Naoki Takata; Hideharu Nakashima

doi:10.4028/www.scientific.net/MSF.558-559.71

Paper Titles

An Overview of Accomplishments and Challenges in Recrystallization and Grain Growth
p.33

Relation between Initial Texture and Microstructure and Nucleation and Growth Mechanisms in Metals
p.45

Boundary Mobilities during Recovery and Recrystallization of Binary Al - Mn Alloys
p.53

The Development of Homo and Heterogeneous Rolling Microstructures in Rolled Low Carbon and Interstitial-Free Steel
p.61

Relation between Ridging and Texture Components in Al-Mg-Si Alloy
p.71

Texture Development in 6000 Series Al-Mg-Si Alloys for Car Body Panels
p.77

Misorientation Aspects of Growth during Recrystallization
p.85

Effect of Stacking Fault Energy on Evolution of Recrystallization and Grain Growth Textures of Metals
p.93

Texture Invariant Annealing in Severely Deformed Steel
p.101

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Relation between Ridging and Texture Components in Al-Mg-Si Alloy

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.