Analysis of macro segregation in twin-roll cast aluminium strips via solidification curves

Differential Scanning Calorimetry is employed to analyze the solidification behaviour of twin-roll cast 1050, 3003, 5754 and 6016 alloys and to identify its impact on the occurrence of macro segregation. The results of the metallographic analysis of the macro segregation patterns in the four alloys investigated are in full agreement with the predictions from the analysis of their solidification curves. Of the four alloys investigated, 3003 and 5754 are judged to be more vulnerable to macro segregation.