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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
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)
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Submitter: 池田 賢一
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