Interface Morphologies and Microstructure of a Single Crystal Superalloy under High Thermal Gradient Directional Solidification

Lin Liu; Jun Zhang; Taiwen Hang; Heng Zhi Fu

doi:10.4028/www.scientific.net/MSF.475-479.665

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Roll Bonding and the Application in Making FeCrAl Alloy
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Effect of Ta on the Oxidation Resistance of a Cast Nickel-Base Die Material with Low Cr and High W Content
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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Interface Morphologies and Microstructure of a...

Interface Morphologies and Microstructure of a Single Crystal Superalloy under High Thermal Gradient Directional Solidification

Abstract:

The interface morphologies single crystal superalloys CMSX-2 has been studied over a range of cooling rate with large variations in withdrawal speed in directional solidification. The superfine cellular structure was obtained under both high thermal gradient up to 1000K/cm and fast withdrawal rate up to 1mm/sec. The high rate directional solidification results in reduction in primary and secondary dendrite arm spacing, refinement of λ’ phase, reduced microsegregation of alloying elements and smaller size of γ-γ’ eutectics.

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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

665-668

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.665

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Cite this paper

Online since:

January 2005

Authors:

Lin Liu, Jun Zhang, Taiwen Hang, Heng Zhi Fu

Keywords:

Directional Solidification, Microstructure, Single Crystal, Superalloy

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