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Evaluation of High Temperature Characteristics in Gas Turbine Blades
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Evaluation of High Temperature Characteristics in Gas Turbine Blades

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Abstract:

The Ni-based superalloy GTD-111DS has been widely used as the material of the first stage blade of gas turbine. But there are little data available on the microstructure and mechanical property. The strength and ductility of GTD-111DS decrease more rapidly due to the acceleration of its microstructure degradation under high temperature. The results of study showed that the shape of γ' did not change with increased aging time but the amount and volume fraction of the deposition of secondary γ' increased and secondary γ' grew among primary γ'. Also there was difference of yield strength and tensile strength in room temperature according to heat treatment and collecting region.

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Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

632-635

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.632

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Online since:

October 2006

Authors:

Hyung Ick Kim, Hong Sun Park, Bong Kook Bae, Young Min Lee, Chang Sung Seok, Moon Young Kim

Keywords:

Gas Turbine, Nickel-Based Superalloy, Phase γ, Tensile Properties

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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