کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796197 | 1514942 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new technique to refine pure aluminum by Al-Ti-C mold
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A new technique to refine commercially pure aluminum was presented, in which the pure Al melt was cast into an Al-Ti-C mold after flowing through an Al-Ti-C launder in the presence of electromagnetic field, and the refinement effect was also investigated. The experimental results indicate that the chill surface of the ingots can be more effectively refined by Al-5Ti-0.4C mold than by Al-7Si mold. In the presence of electromagnetic field, the forced convection significantly modifies the flow pattern and temperature field, which leads to a substantial amelioration of the surface quality and a marked reduction of the grain size. A uniform and fine equiaxed as-cast structure was obtained when the melt flows through an Al-5Ti-0.4C launder before casting into the Al-5Ti-0.4C mold with electromagnetic vibration, and the main reason for this is that the launder wall and the mold wall become permanent and continuous nucleation substrates from which α-Al grains come forth and depart because of the presence of substantial TiC particles and electromagnetic vibration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 399, Issues 1â2, 15 June 2005, Pages 267-270
Journal: Materials Science and Engineering: A - Volume 399, Issues 1â2, 15 June 2005, Pages 267-270
نویسندگان
Liu Xiangfa, Yu Lina, Liu Jianwen, Wang Zhenqing, Bian Xiufang,