کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1451047 988756 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of rheological behaviour and segregation susceptibility of semi-solid aluminium–silicon alloys by a simple back extrusion test
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Prediction of rheological behaviour and segregation susceptibility of semi-solid aluminium–silicon alloys by a simple back extrusion test
چکیده انگلیسی

This paper studied the segregation susceptibility of a number of samples based on the Al–Si system and quenched from the semi-solid state. The work was performed on two compositions (A356 and A356 + 0.5Sn), characterized by spheroidal microstructures obtained by three different conditioning techniques. Viscosities were determined by a simple back-extrusion test and in order to obtain meaningful data a quantitative microstructural mapping of the extruded cups was carried out. From these measurements, a precise assessment of the segregation extent of the samples was compiled and the data was rationalized in terms of the D’Arcy law. Results showed a positive correlation associating segregation extent, microstructural permeability, liquid phase percolation velocity during extrusion and microstructural features such as the Al-α particle size and shape.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 53, Issue 20, December 2005, Pages 5379–5386
نویسندگان
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