Measurement of the residual stress in a Pt–aluminide bond coat

Measurement of the residual stress in a Pt–aluminide bond coat

The residual stress induced in a Pt–aluminide bond coat formed on a single-crystal superalloy due to cooling from the manufacturing temperature, has been measured with the “wafer” curvature method. This approach revealed that the bond coat is in residual tension (about 140 MPa), consistent with the...

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Veröffentlicht in:Scripta materialia 2002, Vol.46 (1), p.67-70
Hauptverfasser: Watanabe, Makoto, Mumm, Daniel R, Chiras, Stefanie, Evans, Anthony G
Format: Artikel
Sprache:eng
Schlagworte:
Analysing. Testing. Standards
Applied sciences
Coating
Exact sciences and technology
Metals. Metallurgy
Residual stress
Stress analysis
Thermal expansion
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Zusammenfassung:The residual stress induced in a Pt–aluminide bond coat formed on a single-crystal superalloy due to cooling from the manufacturing temperature, has been measured with the “wafer” curvature method. This approach revealed that the bond coat is in residual tension (about 140 MPa), consistent with the thermal expansion misfit.
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(01)01198-8