Paper Title:
Degradation Evaluation of the Gas Turbine Hot-Gas-Path Component
  Abstract

Degradation of the gas turbine hot-gas-path components, the 1st stage blades and vanes, serviced for a period was evaluated by measuring the mechanical properties. For this, tensile and impact tests on these gas turbine parts were performed. Microstructure of the substrate and coating layers were also observed. The mechanical properties of the serviced blades were degraded by about 30% comparing with those of unused ones. In terms of the microstructure, the dissolution of the secondary g’ phase and subsequent coarsening of precipitates were observed in the substrate. And the interdiffusion zone near the coating layer was disappeared.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
2266-2271
DOI
10.4028/www.scientific.net/KEM.297-300.2266
Citation
J. S. Jung, S.Y. Chang, K. B. Yoo, G. W. Song, M. S. Kang, M.T. Kim, "Degradation Evaluation of the Gas Turbine Hot-Gas-Path Component ", Key Engineering Materials, Vols. 297-300, pp. 2266-2271, 2005
Online since
November 2005
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$32.00
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