Degradation Characteristics of Inconel738LC with Thermal Exposure

Abstract:

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Gas turbine components operated by hot combustion gas undergo material degradation due to the thermal cycle by daily startup and shutdown. The failure mechanism of the hot gas components is accompanied by degradation in the properties of high temperature strength and creep rupture time. Many hot gas components in gas turbines are made of Ni-based superalloy because of their high temperature performance. In this work, we survey the time and temperature dependent degradation of Ni-based superalloy. We prepared specimens from Inconel738LC that were then exposed at 871~982°C in 1,000~5,000hours. We carried out stress-rupture tests and microstructural investigation.

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Periodical:

Edited by:

George Ferguson, Ashvin Thambyah, Michael A Hodgson and Kelly Wade

Pages:

117-120

DOI:

10.4028/www.scientific.net/AMR.275.117

Citation:

K. B. Yoo et al., "Degradation Characteristics of Inconel738LC with Thermal Exposure", Advanced Materials Research, Vol. 275, pp. 117-120, 2011

Online since:

July 2011

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$35.00

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