Accession Number:

AD0734010

Title:

Effect of Fluid Flow on Solidification Structure.

Descriptive Note:

Technical rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF METALLURGY AND MATERIALS SCIENCE

Personal Author(s):

Report Date:

1971-01-01

Pagination or Media Count:

57.0

Abstract:

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

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE