کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7211609 1469278 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Upward and downward unsteady-state directional solidification of a hypoeutectic Al-3wt.%Mg alloy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Upward and downward unsteady-state directional solidification of a hypoeutectic Al-3wt.%Mg alloy
چکیده انگلیسی
Solidification thermal parameters, such as growth rate, cooling rate and dendrite arm spacing (λ), have been measured in a hypoeutectic Al-Mg alloy directionally solidified under upward and downward transient heat flow conditions. The experimental setup used in this work consists of a water-cooled mould with heat being extracted from the bottom or the top, promoting upward and downward directional solidification, respectively. It is shown that the dendritic arm spacing are not significantly affected by interdendritic convection for both solidification configurations and single growth laws are proposed for both cases. The Bouchard- Kirkaldy model is shown to overestimate the experimental primary dendritic arm spacing, despite fitting properly the secondary dendrite arm spacing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ciência & Tecnologia dos Materiais - Volume 29, Issue 1, January–April 2017, Pages e65-e70
نویسندگان
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