Effect of superimposed uniaxial stress on rumpling of platinum-modified nickel aluminide coatings

Sebastien Dryepondt; David R. Clarke

doi:10.1016/j.actamat.2009.01.040

Effect of superimposed uniaxial stress on rumpling of platinum-modified nickel aluminide coatings

Sebastien Dryepondt, David R. Clarke

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Thermal cycling of a platinum modified, nickel aluminide (Ni,Pt)Al coated single crystal superalloy, between 1000 and 1150 °C with 10 min holds at each temperature, and subject to a compressive uniaxial stress is reported. There are two major effects of the superimposed compressive stress not observed in the absence of the stress. One is that the rumpling pattern exhibits an asymmetry with an increase of the bond coat surface roughness perpendicular to the applied loading axis. The other is the formation of cracks in the thermally grown oxide aligned parallel to the stress axis.

Original language	English
Pages (from-to)	2321-2327
Number of pages	7
Journal	Acta Materialia
Volume	57
Issue number	7
DOIs	https://doi.org/10.1016/j.actamat.2009.01.040
State	Published - Apr 2009
Externally published	Yes

Funding

This work was supported by the Office of Naval Research under Contract A00014-04-1-0053. The authors are grateful to Dr. Ken Murphy, Howmet Research Corporation for supplying the materials studied in this work.

Keywords

Coating
Cyclic oxidation testing
Grain structure
Profilometry
Rumpling

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10.1016/j.actamat.2009.01.040

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title = "Effect of superimposed uniaxial stress on rumpling of platinum-modified nickel aluminide coatings",

abstract = "Thermal cycling of a platinum modified, nickel aluminide (Ni,Pt)Al coated single crystal superalloy, between 1000 and 1150 °C with 10 min holds at each temperature, and subject to a compressive uniaxial stress is reported. There are two major effects of the superimposed compressive stress not observed in the absence of the stress. One is that the rumpling pattern exhibits an asymmetry with an increase of the bond coat surface roughness perpendicular to the applied loading axis. The other is the formation of cracks in the thermally grown oxide aligned parallel to the stress axis.",

keywords = "Coating, Cyclic oxidation testing, Grain structure, Profilometry, Rumpling",

author = "Sebastien Dryepondt and Clarke, \{David R.\}",

year = "2009",

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AU - Dryepondt, Sebastien

AU - Clarke, David R.

PY - 2009/4

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N2 - Thermal cycling of a platinum modified, nickel aluminide (Ni,Pt)Al coated single crystal superalloy, between 1000 and 1150 °C with 10 min holds at each temperature, and subject to a compressive uniaxial stress is reported. There are two major effects of the superimposed compressive stress not observed in the absence of the stress. One is that the rumpling pattern exhibits an asymmetry with an increase of the bond coat surface roughness perpendicular to the applied loading axis. The other is the formation of cracks in the thermally grown oxide aligned parallel to the stress axis.

AB - Thermal cycling of a platinum modified, nickel aluminide (Ni,Pt)Al coated single crystal superalloy, between 1000 and 1150 °C with 10 min holds at each temperature, and subject to a compressive uniaxial stress is reported. There are two major effects of the superimposed compressive stress not observed in the absence of the stress. One is that the rumpling pattern exhibits an asymmetry with an increase of the bond coat surface roughness perpendicular to the applied loading axis. The other is the formation of cracks in the thermally grown oxide aligned parallel to the stress axis.

KW - Coating

KW - Cyclic oxidation testing

KW - Grain structure

KW - Profilometry

KW - Rumpling

UR - https://www.scopus.com/pages/publications/61849122945

U2 - 10.1016/j.actamat.2009.01.040

DO - 10.1016/j.actamat.2009.01.040

M3 - Article

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SP - 2321

EP - 2327

JO - Acta Materialia

JF - Acta Materialia

IS - 7

ER -

Effect of superimposed uniaxial stress on rumpling of platinum-modified nickel aluminide coatings

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Keywords

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