SINGLE-CRYSTAL SOLIDIFICATION OF A NI-BAS E SUPERALLOY SRR-99 .3. EVOLUTION OF MICROSTRUCTURE DURING DIRECTIONAL SOLIDIFICATION

Authors
MA DX SAHM PR
Citation
Dx. Ma et Pr. Sahm, SINGLE-CRYSTAL SOLIDIFICATION OF A NI-BAS E SUPERALLOY SRR-99 .3. EVOLUTION OF MICROSTRUCTURE DURING DIRECTIONAL SOLIDIFICATION, Zeitschrift fur Metallkunde, 87(8), 1996, pp. 640-644
Citations number
12
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Zeitschrift fur Metallkunde → ACNP
ISSN journal
00443093
Volume
87
Issue
8
Year of publication
1996
Pages
640 - 644
Database
ISI
SICI code
0044-3093(1996)87:8<640:SSOANE>2.0.ZU;2-0
Abstract
The evolution of cellular and dendritic microstructure has been invest igated for the directionally solidified single-crystal superalloy SRR 99. The analysis of the transverse sections within the mushy zone yiel ds the solidification sequence and the solid fraction f(s) against the temperature decrease. By means of a special treatment various theoret ical models were applied to calculate the f(s)-variation for the used multicomponent system. In comparison with experimental measurements a reasonable description has been achieved.