کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582550 1514871 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of shearing conditions on the rheology of semi-solid magnesium alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
The influence of shearing conditions on the rheology of semi-solid magnesium alloy
چکیده انگلیسی

The influence of the shearing conditions on the rheology of semi-solid magnesium slurry was investigated by a Couette type viscometer. As the stirring time increased, the apparent viscosity first decreased until reaching a minimum value, and then gradually increased. The phenomena might be affected by the destruction of the dendritic structure (resulting in a decreasing curve) and particle coarsening (resulting in an increasing curve). The apparent viscosity was also influenced by the solid fraction, pre-stirring time, and resting time. When the pre-stirring time was fixed, particle coalescence might lead to an increase in the apparent viscosity as the resting time increased at higher solid fraction. At lower solid fraction, the release of entrapped liquid by Ostwald ripening might cause the apparent viscosity to decrease with increased resting time. When the solid fraction was fixed and the resting time increased, the apparent viscosity might increase due to particle coalescence (for a shorter pre-stirring time) and Ostwald ripening might make the apparent viscosity decrease by releasing entrapped liquid (for a longer pre-stirring time).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 487, Issues 1–2, 25 July 2008, Pages 114–119
نویسندگان
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