Materials Science and Engineering A
Solutal profiles in dendritic single-crystal specimens of PWA-1480 nickel-base superalloy, which were directionally solidified and quenched, were examined on several transverse cross-sections to obtain the partition coefficients. Similar to their nickel-base binaries, the partition coefficients of tantalum, titanium, and aluminum were found to be less than unity; those of tungsten and cobalt were greater than unity. The partition coefficients were temperature independent in the range 1584-1608 K. The contribution of solid-state diffusion to microsegregation was observed to be negligible.
Tewari, Surendra N.; Vijayakumar, M.; Lee, James E.; and Curreri, P. A., "Solutal Partition Coefficients in Nickel-Based Superalloy PWA-1480" (1991). Chemical & Biomedical Engineering Faculty Publications. 51.
Tewari, S., Vijayakumar, M., Lee, J., , & Curreri, P. (1991). Solutal partition coefficients in nickel-based superalloy PWA-1480. Materials Science & Engineering A, 141(1), 97-102. doi:10.1016/0921-5093(91)90713-W
NOTICE: this is the author’s version of a work that was accepted for publication in Materials Science and Engineering A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering A, 141, 1-2, (July 15, 1991)] DOI 10.1016/0921-5093(91)90713-W