Kinetics and Mechanisms of Degradation of the Surface Layers of Gas-Turbine Engine Structural Components Under Cyclic Thermal Loading During Initiation and Propagation of Thermal Fatigue Cracks

Studies of surface layer material degradation of the most loaded elements of gas turbine engine structural components revealed the essential changes in the structure and elemental composition of this layer in the thermal fatigue crack initiation zones, as well as along the propagating crack lips. Th...

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Bibliographic Details
Published in:Strength of materials 2016-11, Vol.48 (6), p.784-790
Main Authors: Buiskikh, K. P., Kiselevskaya, S. G., Kravchuk, L. V., Zadvornyi, E. A., Feofentov, N. N.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crack initiation
Crack propagation
Degradation
Fatigue
Fatigue cracks
Fatigue failure
Fatigue testing machines
Fracture mechanics
Gas turbine engines
Gas-turbines
High temperature
Materials
Materials Science
Solid Mechanics
Surface layers
Thermal fatigue
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Summary:Studies of surface layer material degradation of the most loaded elements of gas turbine engine structural components revealed the essential changes in the structure and elemental composition of this layer in the thermal fatigue crack initiation zones, as well as along the propagating crack lips. The intensity of the observed changes implies the necessity of their account in the stress-strain state calculations and residual life estimations of high-temperature structural components of gas turbine engines.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-017-9825-0