کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9808712 1517355 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of power ultrasound on solidification of aluminum A356 alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effect of power ultrasound on solidification of aluminum A356 alloy
چکیده انگلیسی
The present investigation attempted to evaluate the effect of ultrasonic vibration on the nucleation and growth of aluminum alloy A356 melt. A356 melt was treated at various solid fractions isothermally with ultrasonic vibrations by dipping the acoustic radiator into the melt. Experimental result confirmed that globular grains could be effectively obtained when the melt was ultrasonically treated at the temperature close to its liquidus and subsequently cooled quickly. It further illustrated the difficulty to form globular grains when the specimens were treated at isothermal temperatures in the mushy zone. It may imply that in the given experiments cavitations-induced heterogeneous nucleation plays a more important role than dendrite fragmentation in the formation of globular grains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issues 2–3, February 2005, Pages 190-193
نویسندگان
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