モトヤス　ゲンジロウ   Genjiro Motoyasu   本保　元次郎    所属   千葉工業大学  工学部 先端材料工学科    千葉工業大学  工学研究科 工学専攻    千葉工業大学  工学研究科 先端材料工学専攻    職種   教授
言語種別	英語
発行・発表の年月	2015/11
形態種別	国際会議プロシーディングス
標題	Continuous cast unidirectional solidified aluminum wires and their crystalline structures
執筆形態	共著
掲載誌名	Proc. of The 13th Asian Foundry Congress
掲載区分	国外
出版社・発行元	Bach Khoa Publishing House
巻・号・頁	pp.90-95
概要	Unidirectionally-solidified 99.9% aluminum wires 6 mm in diameter have been produced by a heated mold continuous casting process (OCC Process) at casting speeds of 20~300 mm/min. The effects of casting speeds on crystalline structures of the cast wires have been studied by an EBSD technique. It was found that the crystal orientation of all cast wires parallel to the casting direction tended to be [100], the preferred growth orientation of aluminum. At lower casting speeds (20 mm/min), single crystal wires with low-angle tilting sub-grain boundaries were produced. In this case, the local disorientation angles of the sub-grain boundaries were chiefly distributed near 1 degree. As the casting speeds increased, some of the local disorientation angles exceeded 15 degree. At casting speeds above 100 mm/min, the wires exhibited unidirectional sub-texture containing low-angle and high-angle tilting grain boundaries.