Life Prediction of Thermo-Mechanical Fatigue for Nickel Based Superalloy IN738LC

Jung Seob Hyun; Gee Wook Song; Young Shin Lee

doi:10.4028/www.scientific.net/KEM.326-328.953

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 326-328Life Prediction of Thermo-Mechanical Fatigue for...

Life Prediction of Thermo-Mechanical Fatigue for Nickel Based Superalloy IN738LC

Abstract:

An experimental program has been carried out to address the thermo-mechanical fatigue life of the uncoated IN738LC nickel-base superalloy. High temperature isothermal Fatigue and out-of-phase(OP), in-phase(IP) TMF experiments in strain control were performed on superalloy materials. Temperature interval of 450-850 was applied to thermo-mechanical fatigue tests. The stress-strain response and the life cycle of the material were measured during the test. The plastic strain energy based life pediction models were applied to the stress-strain history effect on the thermo-mechanical fatigue lives.

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Periodical:

Key Engineering Materials (Volumes 326-328)

Pages:

953-956

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.953

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Online since:

December 2006

Authors:

Jung Seob Hyun, Gee Wook Song, Young Shin Lee

Keywords:

Damage Mechanics, Lifetime Prediction, Superalloy, Thermo-Mechanical Fatigue (TMF)

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