Effect of Fluid Flow on Solidification Structure.
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF METALLURGY AND MATERIALS SCIENCE
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It is shown that the simple constitutional supercooling theory derived for a binary alloy can be applied to a ternary alloy when certain conditions are met. The conditions required to unidirectionally solidify a composite three-component crystal with a planar interface are a steep temperature gradient in the liquid at the interface and a low growth rate when the ratio of these two variables is sufficiently high, a three-phase crystal with a eutecticlike structure has been grown, even when the initial composition of the alloy was far from the eutectic composition. Alloys studied were of the Al-Cu-Ni system of different compositions on the line of two-fold saturation joining the ternary eutectic and the binary Al-NiAl3, and within the ternary tie-triangle. Author
- Properties of Metals and Alloys