Hot tearing is an important defect that occurs during the solidification of aluminum alloys. While a number of studies exist in characterizing the hot tearing susceptibility of foundry alloys, very few investigations have been carried out on wrought aluminum alloys. Since hot tearing occasionally occurs during the DC casting process for the production of wrought aluminum alloys, it is important to conduct studies on hot tearing of this alloy group.;In this study, an investigation has been conducted using the Constrained Rod Casting (CRC) method to determine the susceptibility of hot tearing of wrought aluminum alloys. Four commercial aluminum alloys, AA1050, AA3104, AA5182 and AA6111, and a series of Al-Si binary alloys, Al-0.5wt%Si, Al-1.0wt%Si, Al-1.5%wtSi, Al-2.0%wtSi, and Al-3.0wt%Si have been examined. In order to measure the hot tearing susceptibilities of wrought aluminum alloys, two new rating systems, Hot Tearing Susceptibility (HTS) and Footprint Chart (FC), were evaluated.;Analyses of hot tear surfaces were conducted on the four wrought aluminum alloys.;A study of macro-and microstructures of the castings was performed and a reasonable degree of correlation was found between the structures and hot tearing susceptibility. (Abstract shortened by UMI.)
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