کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1451047 | 988756 | 2005 | 8 صفحه PDF | دانلود رایگان |

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.
Journal: Acta Materialia - Volume 53, Issue 20, December 2005, Pages 5379–5386