کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9830069 | 1524502 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphological stability during directional solidification into an oscillatory molten zone
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Morphological stability during directional solidification into an oscillatory molten zone Morphological stability during directional solidification into an oscillatory molten zone](/preview/png/9830069.png)
چکیده انگلیسی
We study the morphological instabilities of a dilute binary alloy during directional solidification into a time-periodic, oscillatory molten zone by modulating the solute field. The basic state, in which the flat melt-solid interface advances in a sinusoidal way, is solved analytically by expanding the governing equations in terms of the assumed-small amplitude of modulation. A linear stability analysis is then performed on the interface considering two specific instability modes: synchronous and subharmonic modes. We find the original Mullins-Sekerka instability can be stabilized synchronously by the imposed modulation. The subharmonic mode occurs with smaller wave numbers and is less critical than the synchronous Mullins-Sekerka mode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 276, Issues 1â2, 15 March 2005, Pages 289-298
Journal: Journal of Crystal Growth - Volume 276, Issues 1â2, 15 March 2005, Pages 289-298
نویسندگان
C.A. Chung, K.H. Ho, P.S. Chou,