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6111アルミニウム合金のリジング発生に及ぼす加工熱処理の影響とCube方位粒形成過程

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J. Jpn. Inst. Light Met. 64(8)_ 353-360 (2014).pdf12.12 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75344

Title: 6111アルミニウム合金のリジング発生に及ぼす加工熱処理の影響とCube方位粒形成過程
Other Titles: Effect of thermo-mechanical treatment on ridging behavior and cube-oriented grain formation process in 6111 aluminum alloy
Authors: 池田, 賢一1 Browse this author →KAKEN DB
宮田, 幸昌2 Browse this author
吉原, 隆浩3 Browse this author
高田, 尚記4 Browse this author →KAKEN DB
中島, 英治5 Browse this author →KAKEN DB
Authors(alt): Ikeda, Ken-ichi1
Miyata, Yukimasa2
Yoshihara, Takahiro3
Takata, Naoki4
Nakashima, Hideharu5
Keywords: Al-Mg-Si alloy
6111 aluminum alloy
ridging
roping
texture
Issue Date: 30-Aug-2014
Publisher: 軽金属学会
Journal Title: 軽金属
Journal Title(alt): Journal of Japan Institute of Light Metals
Volume: 64
Issue: 8
Start Page: 353
End Page: 360
Publisher DOI: 10.2464/jilm.64.353
Abstract: Al–Mg–Si alloys are suitable materials for automotive body application because of a good formability, a good corrosion resistance and a satisfactory strengthening. However, it is well known that when some kinds of Al–Mg–Si alloy sheets are stretched along the transverse direction, rope-like profiles (ridging/roping) parallel to the rolling direction develop on the surface. The purpose of this study is to clarify the ridging development in Al–Mg–Si alloy (6111 aluminum alloy). The effect of thermo-mechanical treatment on ridging development was investigated by 3D profile microscope and SEM/EBSD method. Rope-like profiles tended to develop remarkably in the hot-rolled and intermediate-annealed sheets. In highly ridging developed sample, there were many bands of cube-oriented grains (cube bands). Therefore, in this study, the cube-oriented grain formation process was also investigated by SEM/EBSD and TEM observation. Microstructure observations revealed that cube-oriented grains formed during the hot rolling process could remain due to rod-like precipitates in grain. And then, these cube-oriented grains were grown along the rolling direction during the intermediate annealing. Crystal orientation analysis shows the stored energy of the cube-oriented grains in the cold rolled sheet was lower than that of other-oriented grains. Therefore, we concluded that cube bands are preferentially formed during solutionized treatment.
Type: article
URI: http://hdl.handle.net/2115/75344
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 池田 賢一

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