Effects of chill thickness on defects position of T-shaped aluminum alloy castings were investigated by combining experiment with numerical simulation

meanwhile

effective distance of the chill was presented by observing the temperature change at different locations of T-shaped aluminum alloy castings. It is found that with chill thickness less than 30 mm

defects locations and effective distance are closely dependent on the increase of chill thickness

while with one more than 30 mm

they are almost independent of the increase of the chill thickness

which provides a guide to chill application in solidification process of aluminum alloy.