Effect of Ce Addition on the Microstructures and Mechanical Properties of a Ni-Co-Based Superalloy

Chuan Yong Cui; Guo Ming Han; Xiao Feng Sun

doi:10.4028/www.scientific.net/AMR.415-417.2062

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Effect of Ce Addition on the Microstructures and...

Effect of Ce Addition on the Microstructures and Mechanical Properties of a Ni-Co-Based Superalloy

Abstract:

Effects of Ce addition on the microstructures and mechanical properties of the Ni-Co-based superalloy were investigated. The results showed that addition of Ce to the alloys resulted in a Ce-rich phase (Ni,Co)₃Ce formation. The rupture life was improved greatly by Ce addition and the optimal Ce addition was about 0.2 wt.%. Both peak stress and critical stress of dynamic recrystallization were increased with increasing (Ni,Co)₃Ce phases, which was mainly due to pinning effect on grain boundary sliding by precipitation.

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Periodical:

Advanced Materials Research (Volumes 415-417)

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2062-2065

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https://doi.org/10.4028/www.scientific.net/AMR.415-417.2062

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December 2011

Authors:

Chuan Yong Cui, Guo Ming Han, Xiao Feng Sun

Keywords:

Cerium, Mechanical Property, Microstructure, Ni-Co Based Superalloy

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