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Macrosegregation as a consequence of solidification of a binary Pb–48 wt% Sn alloy in two-dimensional rectangle cavity was investigated by two-phase model instead of the common used continuum model. The macroscopic transport of mass, momentum, species and energy was coupled with the microscopic descriptions of grain nucleation and growth. The mathematic equations of the two-phase model were discretized...
Al 2 O 3 /A356-La alloy composites were fabricated by squeeze casting, and the effects of La on the solidified structure and the solute segregation during alloy solidification were studied. The results indicate that the structure of the matrix alloy becomes fine and small by the addition of La. La has been richened at the interface to help improve the wettability between the fiber...
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