Effect of Melt Overheating History on the Microstructure of Ni-Base Single Crystal Superalloy

Abstract:

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With the unchanged thermal gradient and withdrawal speed, the effect of melt overheating history on the microstructure of Ni-base single crystal superalloy is investigated. The results show that the dendrite structure and γ' phase in interdendritic area is obviously refined when overheating temperature increased from 1500 °C to 1640 °C and then to 1780 °C. However, the microstructure is coarsen with the holding time is increased from 30 min to 45min and then to 60min when melt is overheated at 1780 for 30min.

Info:

Periodical:

Advanced Materials Research (Volumes 217-218)

Edited by:

Zhou Mark

Pages:

692-696

DOI:

10.4028/www.scientific.net/AMR.217-218.692

Citation:

M.M. Zou et al., "Effect of Melt Overheating History on the Microstructure of Ni-Base Single Crystal Superalloy", Advanced Materials Research, Vols. 217-218, pp. 692-696, 2011

Online since:

March 2011

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Price:

$35.00

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