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

Abstract:

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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.

Info:

Periodical:

Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto

Pages:

109-114

DOI:

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

Citation:

S. Kuba et al., "Effect of Thermal Barrier Coating Layer on HIP Treated IN738LC Fatigue Characteristic", Key Engineering Materials, Vols. 306-308, pp. 109-114, 2006

Online since:

March 2006

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Price:

$35.00

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