Out-of-Phase Thermomechanical Fatigue Behavior of a NiCrAlYSi-Coated Superalloy

Hu Xiaoan; Zhao Gaole; Huang Jia; Wang Xiangyi; Yang Xiaoguang

doi:10.1007/s11665-019-04195-9

Out-of-Phase Thermomechanical Fatigue Behavior of a NiCrAlYSi-Coated Superalloy

Hu Xiaoan
, Zhao Gaole
, Huang Jia^*
, Wang Xiangyi
, Yang Xiaoguang

^*Corresponding author for this work

Nanchang Hangkong University
Jiangxi Key Laboratory of Micro Aeroengine Technology
Shijiazhuang Flying College
Beihang University
China Aerodynamics Research and Development Center

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

1 Scopus citations

Abstract

Arc ion plating was employed on a directionally solidified nickel-based superalloy to deposit a NiCrAlYSi coating. The failure behavior of the coated cylindrically specimens under thermomechanical fatigue loadings was experimentally investigated. The results show that the effect of coatings on TMF lives is dependent on the temperature ranges, and the TMF life with dwell time is reduced compared to the one without dwells. Through microstructure observation methods, the Al-rich areas in the coatings especially near the interfaces of the coating and superalloy are crack initiation sites. The combination of temperature dependent localized oxidation and stress concentration at the crack tip dominate the crack initiation and small crack propagation procedure.

Original language	English
Pages (from-to)	4582-4592
Number of pages	11
Journal	Journal of Materials Engineering and Performance
Volume	28
Issue number	8
DOIs	https://doi.org/10.1007/s11665-019-04195-9
State	Published - 15 Aug 2019
Externally published	Yes

Keywords

coating
crack
oxidation
superalloy
thermomechanical fatigue

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10.1007/s11665-019-04195-9

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title = "Out-of-Phase Thermomechanical Fatigue Behavior of a NiCrAlYSi-Coated Superalloy",

abstract = "Arc ion plating was employed on a directionally solidified nickel-based superalloy to deposit a NiCrAlYSi coating. The failure behavior of the coated cylindrically specimens under thermomechanical fatigue loadings was experimentally investigated. The results show that the effect of coatings on TMF lives is dependent on the temperature ranges, and the TMF life with dwell time is reduced compared to the one without dwells. Through microstructure observation methods, the Al-rich areas in the coatings especially near the interfaces of the coating and superalloy are crack initiation sites. The combination of temperature dependent localized oxidation and stress concentration at the crack tip dominate the crack initiation and small crack propagation procedure.",

keywords = "coating, crack, oxidation, superalloy, thermomechanical fatigue",

author = "Hu Xiaoan and Zhao Gaole and Huang Jia and Wang Xiangyi and Yang Xiaoguang",

note = "Publisher Copyright: {\textcopyright} 2019, ASM International.",

year = "2019",

month = aug,

day = "15",

doi = "10.1007/s11665-019-04195-9",

language = "英语",

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pages = "4582--4592",

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issn = "1059-9495",

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}

TY - JOUR

T1 - Out-of-Phase Thermomechanical Fatigue Behavior of a NiCrAlYSi-Coated Superalloy

AU - Xiaoan, Hu

AU - Gaole, Zhao

AU - Jia, Huang

AU - Xiangyi, Wang

AU - Xiaoguang, Yang

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Arc ion plating was employed on a directionally solidified nickel-based superalloy to deposit a NiCrAlYSi coating. The failure behavior of the coated cylindrically specimens under thermomechanical fatigue loadings was experimentally investigated. The results show that the effect of coatings on TMF lives is dependent on the temperature ranges, and the TMF life with dwell time is reduced compared to the one without dwells. Through microstructure observation methods, the Al-rich areas in the coatings especially near the interfaces of the coating and superalloy are crack initiation sites. The combination of temperature dependent localized oxidation and stress concentration at the crack tip dominate the crack initiation and small crack propagation procedure.

AB - Arc ion plating was employed on a directionally solidified nickel-based superalloy to deposit a NiCrAlYSi coating. The failure behavior of the coated cylindrically specimens under thermomechanical fatigue loadings was experimentally investigated. The results show that the effect of coatings on TMF lives is dependent on the temperature ranges, and the TMF life with dwell time is reduced compared to the one without dwells. Through microstructure observation methods, the Al-rich areas in the coatings especially near the interfaces of the coating and superalloy are crack initiation sites. The combination of temperature dependent localized oxidation and stress concentration at the crack tip dominate the crack initiation and small crack propagation procedure.

KW - coating

KW - crack

KW - oxidation

KW - superalloy

KW - thermomechanical fatigue

UR - https://www.scopus.com/pages/publications/85069742164

U2 - 10.1007/s11665-019-04195-9

DO - 10.1007/s11665-019-04195-9

M3 - 文章

AN - SCOPUS:85069742164

SN - 1059-9495

VL - 28

SP - 4582

EP - 4592

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 8

ER -

Out-of-Phase Thermomechanical Fatigue Behavior of a NiCrAlYSi-Coated Superalloy

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Keywords

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