Paper Title:
Microstructure Refinement of As-Cast Single Crystal Superalloys by Re-Solidification
  Abstract

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, R. M. Kearsey, H. Saari, J. Beddoes, "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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$32.00
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