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J. Jpn. Inst. Light Met. 66(11)_ 609-616 (2016).pdf2.49 MBPDFView/Open
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Title: Al–Mg–Si合金の再結晶挙動に及ぼすスカンジウムとジルコニウム添加の影響
Other Titles: Effects of Scandium and Zirconium addition on recrystallization behavior of Al–Mg–Si alloy
Authors: 池田, 賢一1 Browse this author →KAKEN DB
高下, 拓也2 Browse this author
秋吉, 竜太郎3 Browse this author
波多, 聰4 Browse this author
中島, 英治5 Browse this author →KAKEN DB
山田, 和広6 Browse this author
金子, 賢治7 Browse this author
Authors(alt): Ikeda, Ken-ichi1
Takashita, Takuya2
Akiyoshi, Ryutaro3
Hata, Satoshi4
Nakashima, Hideharu5
Yamada, Kazuhiro6
Kaneko, Kenji7
Keywords: Al-Mg-Si alloy
grain growth
pinning force
Issue Date: 30-Nov-2016
Publisher: 軽金属学会
Journal Title: 軽金属
Journal Title(alt): Journal of Japan Institute of Light Metals
Volume: 66
Issue: 11
Start Page: 609
End Page: 616
Publisher DOI: 10.2464/jilm.66.609
Abstract: The effects of thermally stabilized particles in Al–Mg–Si alloy on recrystallization behavior were investigated to obtain fundamental knowledge to control microstructure, texture and mechanical properties of this alloy. In this study, the Al–Mg–Si–Sc–Zr alloy was cast, homogenized and hot rolled. Three types of spherical Al3(Sc, Zr) particles with L12 structure: rod-like incoherent, spherical semi-coherent and spherical incoherent particles were observed in the hot-rolled sample in the Al–Mg–Si–Sc–Zr alloy by using TEM, STEM and EDS. In addition, it was found that all particles have the core-shell structure with the core enriched with Sc and the shell enriched with Zr atoms by 3D-ET and STEM-EDS. It is considered that these particles are formed during casting, homogenized treatment and hot rolling. The results of crystal orientation distribution of annealed sample after cold rolling indicated that the presence of Al3(Sc, Zr) particles may interfere with the recrystallization (the grain growth) until 600°C. From the comparison with the driving force of primary recrystallization and grain growth, and the pinning force of Al3(Sc, Zr) particles, it was suggested that these particles mainly contribute to the suppression of grain growth. The results of in-situ heating SEM/EBSD analysis of cold rolled Al–Mg–Si–Sc–Zr alloy supported the suggestion.
Type: article
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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