کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
796432 1466782 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat transfer and solidification behaviour of modified A357 alloy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Heat transfer and solidification behaviour of modified A357 alloy
چکیده انگلیسی

Al–Si alloys are subjected to melt treatment like modification to improve their mechanical properties. Non-destructive technique like thermal analysis is generally used to assess the effectiveness of melt treatment. In the present study, the behaviour of the melt treated Al–7Si–Mg alloy (A357) during solidification with or without chilling was investigated using thermal analysis. Thermal analysis and heat transfer parameters were determined. Thermal analysis parameters were affected significantly by modification and chilling. Modification treatment resulted in the increase of cooling rate, heat evolved, casting/mould interfacial heat flux and eutectic growth velocity. A theoretical model based on undercooling from the equilibrium temperature during eutectic solidification was used to predict growth velocities and eutectic grain size. The eutectic grain sizes estimated using the model and those measured from casting microstructures were found to be in good agreement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 182, Issues 1–3, 2 February 2007, Pages 152–156
نویسندگان
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