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The containerless rapid solidification of liquid ternary Al–5 %Cu–65 %Sn immiscible alloy was accomplished at both ultrasonic levitation and free fall conditions. A maximum undercooling of 185 K (0.22 TL) was obtained for the ultrasonically levitated alloy melt at a cooling rate of about 122 K s−1. Meanwhile, the cooling rate of alloy droplets in drop tube varied from 102 to 104 K s−1. The macrosegregation...
Containerless solidification of Ni–18.7at%Sn eutectic alloy has been achieved with a single-axis acoustic levitator. The temperature, motion, and oscillation of the sample were monitored by a high speed camera. The temperature of the sample can be determined from its image brightness, although the sample moves vertically and horizontally during levitation. The experimentally observed frequency of...
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