Effect of Thermal Barrier Coating Layer on HIP Treated IN738LC Fatigue Characteristic

Shunichi Kuba; Yoshitaka Kojima; Hideto Suzuki

doi:10.4028/www.scientific.net/KEM.306-308.109

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 306-308Effect of Thermal Barrier Coating Layer on HIP...

Effect of Thermal Barrier Coating Layer on HIP Treated IN738LC Fatigue Characteristic

Abstract:

The fatigue characteristic of thermal barrier-coated Ni-base superalloy IN738LC at room temperature was studied by fatigue test using SEM-servo testing machine. In order to eliminate the influence of micro-shrinkage in IN738LC and purely investigate the effect of TBC on fatigue characteristic, HIP treated IN738LC was used in comparison with NON-HIP treated one. The results indicate that HIP treatment is effective to remove micro-shrinkage and fatigue life is greatly improved. The TBC coating layer is a strength member in the small test specimen at room temperature, and TBC coated material showed lower fatigue life rather than IN738LC without TBC.

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Periodical:

Key Engineering Materials (Volumes 306-308)

Pages:

109-114

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.306-308.109

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Online since:

March 2006

Authors:

Shunichi Kuba, Yoshitaka Kojima, Hideto Suzuki

Keywords:

Ceramic, Coating, Fatigue, Fracture Mechanic, Hot Isostatic Pressing (HIP), Nickel-Based Superalloy, Thermal Barrier Coating (TBC)

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