Microstructure Refinement of As-Cast Single Crystal Superalloys by Re-Solidification

Abstract:

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Recently identified re-solidification behaviour of heavily alloyed single crystal super¬alloys has been incorporated into the Bridgman method. The process variables of resolidifcation temperature and mould withdrawal rate have been optimized. The microstructure, microporosity and eutectic phase fraction of re-solidified specimens were analyzed and compared with conventionally cast single crystal specimens. The potential advantage of this modified method has been illustrated by performing solution heat treatments on both re-solidified and normally cast specimens followed by eutectic phase fraction analysis.

Info:

Periodical:

Advanced Materials Research (Volumes 89-91)

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

250-255

DOI:

10.4028/www.scientific.net/AMR.89-91.250

Citation:

S.R. Hegde et al., "Microstructure Refinement of As-Cast Single Crystal Superalloys by Re-Solidification", Advanced Materials Research, Vols. 89-91, pp. 250-255, 2010

Online since:

January 2010

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Price:

$35.00

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