The Effect of Creep on Morphology Change of Surface Groove on Fecralloy in TBCs during Thermal Oxidation Cycles

Abstract:

Article Preview

In this work, the effects of creep behaviors for constituent materials in thermal barrier coatings (TBCs) on the morphology change occurring near the surface groove are investigated upon twenty-four purely thermal cycles using the finite element method. The formation of thermally grown oxide (TGO) in lateral and thickness directions at high temperature are simulated by means of material property change based on in-house measured material properties such as yield strength and TGO final thickness. The result shows that under the purely thermal cycles the creep in constituent materials significantly enhances the morphology change near the grooves. It is also found that creep in only substrate predominates at high temperature while creep only in TGO plays a less important role in the morphology change due to its relatively slower creep behavior compared to Fecralloy substrate.

Info:

Periodical:

Advanced Materials Research (Volumes 79-82)

Edited by:

Yansheng Yin and Xin Wang

Pages:

1157-1160

DOI:

10.4028/www.scientific.net/AMR.79-82.1157

Citation:

X. Huang et al., "The Effect of Creep on Morphology Change of Surface Groove on Fecralloy in TBCs during Thermal Oxidation Cycles ", Advanced Materials Research, Vols. 79-82, pp. 1157-1160, 2009

Online since:

August 2009

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.