Determination of the solidification curves of commercial aluminum alloys

The understanding of solidification curves is crucial for the control of many solidification processes. The solidification curves of seven commercial aluminum alloys (1050, 1070, 1100, 3003, 3003, 5052, and 7075) were determined by using a differential thermal analysis (DTA) coupled with a mathematical modeling method, which has advantages over the conventional quenching method or the solidification modeling method. With the proposed technique in this study, the whole spectrum of the solidification curve can be determined with high reliability, without requiring the knowledge of a number of thermophysical parameters, which are usually difficult to obtain.