Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings

Y. Zhang; J. A. Haynes; B. A. Pint; I. G. Wright; W. Y. Lee

doi:10.1016/S0257-8972(02)00585-6

Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings

Y. Zhang, J. A. Haynes, B. A. Pint, I. G. Wright, W. Y. Lee

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

152 Scopus citations

Abstract

The martensitic phase transformation in single-phase β-NiAl and (Ni,Pt) Al coatings was investigated. After isothermal exposure to 1150 °C for 100 h, the β phase in both types of coatings was transformed to a martensite phase during cooling to room temperature. Martensitic transformation was also observed in the (Ni,Pt)Al bond coat with and without a YSZ top layer after thermal cycling at 1150 °C (700 1-h cycles). The transformation took place due to Al depletion in the coating from the formation of the Al O scale and interdiffusion between the coating and superalloy substrate. The effects of the martensitic transformation 2 3 on coating surface stability ('rumpling') via volume changes during the phase transformation are discussed with regard to TBC failure.

Original language	English
Pages (from-to)	19-24
Number of pages	6
Journal	Surface and Coatings Technology
Volume	163-164
DOIs	https://doi.org/10.1016/S0257-8972(02)00585-6
State	Published - Jan 30 2003

Funding

The authors acknowledge C. Kortovich and L. Graham, PCC Airfoils, for providing superalloy materials; B. Warnes and N. DuShane, Howmet Corporation, for conducting Pt electroplating and supplying coating specimens; L.D. Chitwood, G. Garner, and L. Walker, ORNL, for technical assistance. Thanks are extended to J.L. Smialek of NASA Glenn Research Center and R. Peraldi of ORNL for helpful discussions, and P. Tortorelli and M. Brady at ORNL for reviewing the manuscript. Research was sponsored by the US Department of Energy, Fossil Energy Advanced Materials Research Program under contract DE-AC05-00OR22725 with UT-Batelle, LLC. Additional support was provided by the Fossil Energy Advanced Materials Research Program, under subcontract 4000007035 with Tennessee Technological University.

Funders	Funder number
Fossil Energy Advanced Materials Research Program	DE-AC05-00OR22725, 4000007035
Tennessee Technological University
U.S. Department of Energy

Keywords

Bond coat
Martensitic transformation
Platinum aluminide
Rumpling
Thermal barrier coating

Access to Document

10.1016/S0257-8972(02)00585-6

Cite this

@article{cbe18fe18f2542358ea36f0565f32b66,

title = "Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings",

abstract = "The martensitic phase transformation in single-phase β-NiAl and (Ni,Pt) Al coatings was investigated. After isothermal exposure to 1150 °C for 100 h, the β phase in both types of coatings was transformed to a martensite phase during cooling to room temperature. Martensitic transformation was also observed in the (Ni,Pt)Al bond coat with and without a YSZ top layer after thermal cycling at 1150 °C (700 1-h cycles). The transformation took place due to Al depletion in the coating from the formation of the Al O scale and interdiffusion between the coating and superalloy substrate. The effects of the martensitic transformation 2 3 on coating surface stability ('rumpling') via volume changes during the phase transformation are discussed with regard to TBC failure.",

keywords = "Bond coat, Martensitic transformation, Platinum aluminide, Rumpling, Thermal barrier coating",

author = "Y. Zhang and Haynes, {J. A.} and Pint, {B. A.} and Wright, {I. G.} and Lee, {W. Y.}",

year = "2003",

month = jan,

day = "30",

doi = "10.1016/S0257-8972(02)00585-6",

language = "English",

volume = "163-164",

pages = "19--24",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier",

}

TY - JOUR

T1 - Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings

AU - Zhang, Y.

AU - Haynes, J. A.

AU - Pint, B. A.

AU - Wright, I. G.

AU - Lee, W. Y.

PY - 2003/1/30

Y1 - 2003/1/30

N2 - The martensitic phase transformation in single-phase β-NiAl and (Ni,Pt) Al coatings was investigated. After isothermal exposure to 1150 °C for 100 h, the β phase in both types of coatings was transformed to a martensite phase during cooling to room temperature. Martensitic transformation was also observed in the (Ni,Pt)Al bond coat with and without a YSZ top layer after thermal cycling at 1150 °C (700 1-h cycles). The transformation took place due to Al depletion in the coating from the formation of the Al O scale and interdiffusion between the coating and superalloy substrate. The effects of the martensitic transformation 2 3 on coating surface stability ('rumpling') via volume changes during the phase transformation are discussed with regard to TBC failure.

AB - The martensitic phase transformation in single-phase β-NiAl and (Ni,Pt) Al coatings was investigated. After isothermal exposure to 1150 °C for 100 h, the β phase in both types of coatings was transformed to a martensite phase during cooling to room temperature. Martensitic transformation was also observed in the (Ni,Pt)Al bond coat with and without a YSZ top layer after thermal cycling at 1150 °C (700 1-h cycles). The transformation took place due to Al depletion in the coating from the formation of the Al O scale and interdiffusion between the coating and superalloy substrate. The effects of the martensitic transformation 2 3 on coating surface stability ('rumpling') via volume changes during the phase transformation are discussed with regard to TBC failure.

KW - Bond coat

KW - Martensitic transformation

KW - Platinum aluminide

KW - Rumpling

KW - Thermal barrier coating

UR - http://www.scopus.com/inward/record.url?scp=0037472686&partnerID=8YFLogxK

U2 - 10.1016/S0257-8972(02)00585-6

DO - 10.1016/S0257-8972(02)00585-6

M3 - Article

AN - SCOPUS:0037472686

SN - 0257-8972

VL - 163-164

SP - 19

EP - 24

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Martensitic transformation in CVD NiAl and (Ni,Pt)Al bond coatings

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this