Effects of High Temperature Deformation and Thermal Exposure on Microstructure and Mechanical Properties of Co-Based Superalloy

Han Sang Lee; Keun Bong Yoo; Kyu So Song; Kyu Ho Lee

doi:10.4028/www.scientific.net/AMR.275.121

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 275Effects of High Temperature Deformation and...

Effects of High Temperature Deformation and Thermal Exposure on Microstructure and Mechanical Properties of Co-Based Superalloy

Abstract:

The gas turbine components operated in hot combustion gas undergo material degradation due to the thermal cycles. The failure mechanism of the hot gas components would be accompanied by material degradation in the properties of high temperature strength and creep rupture time. Many stationary parts in gas turbine are made of Co-based superalloy because of their high temperature performance. In this work, we survey the time and temperature dependent degradation of Co-based superalloy. We prepared the specimens of Co-based superalloy ECY768 that are exposed at 871 and 982 oC in 1000 ~ 5000 hours. We carried out the mechanical test and microstructural observation.

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Periodical:

Advanced Materials Research (Volume 275)

Pages:

121-123

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.275.121

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Online since:

July 2011

Authors:

Han Sang Lee, Keun Bong Yoo, Kyu So Song, Kyu Ho Lee

Keywords:

ECY768, Gas Turbine, High Temperature Tensile Test, Mechanical Property, Thermal Exposure

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References

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