Very high cycle fatigue of a nickel-based superalloy at room and elevated temperatures: Interior failure behavior and life prediction

Xiaolong Li; Yucheng Zhang; Wei Li; Siqi Zhou; Rui Sun; Cheng Li; Ping Wang; Tatsuo Sakai

doi:10.1016/j.ijfatigue.2021.106349

Very high cycle fatigue of a nickel-based superalloy at room and elevated temperatures: Interior failure behavior and life prediction

Xiaolong Li, Yucheng Zhang, Wei Li^*, Siqi Zhou, Rui Sun, Cheng Li, Ping Wang, Tatsuo Sakai

^*Corresponding author for this work

School of Mechanical Engineering

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

36 Citations (Scopus)

Abstract

Asymmetric load tests at 25 °C & 750 °C were performed to clarify the high-cycle-fatigue and very-high-cycle-fatigue properties of a nickel-based superalloy at elevated temperature. The life at 750 °C is longer due to the interior failure with crystallographic facets. Moreover, due to the competition between temperature and vacuum effects, threshold values for small and long cracks, as well as the transition crack size, are all lower at elevated temperature. Finally, based on proposed crack nucleation life model, fatigue life is evaluated by using fatigue-index-parameter, and predicted results are within a factor of three with respect to experimental data.

Original language	English
Article number	106349
Journal	International Journal of Fatigue
Volume	151
DOIs	https://doi.org/10.1016/j.ijfatigue.2021.106349
Publication status	Published - Oct 2021

Keywords

Elevated temperature effect
Interior cracking
Life prediction
Nickel-based superalloy
Very high cycle fatigue

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10.1016/j.ijfatigue.2021.106349

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title = "Very high cycle fatigue of a nickel-based superalloy at room and elevated temperatures: Interior failure behavior and life prediction",

abstract = "Asymmetric load tests at 25 °C & 750 °C were performed to clarify the high-cycle-fatigue and very-high-cycle-fatigue properties of a nickel-based superalloy at elevated temperature. The life at 750 °C is longer due to the interior failure with crystallographic facets. Moreover, due to the competition between temperature and vacuum effects, threshold values for small and long cracks, as well as the transition crack size, are all lower at elevated temperature. Finally, based on proposed crack nucleation life model, fatigue life is evaluated by using fatigue-index-parameter, and predicted results are within a factor of three with respect to experimental data.",

keywords = "Elevated temperature effect, Interior cracking, Life prediction, Nickel-based superalloy, Very high cycle fatigue",

author = "Xiaolong Li and Yucheng Zhang and Wei Li and Siqi Zhou and Rui Sun and Cheng Li and Ping Wang and Tatsuo Sakai",

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year = "2021",

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T1 - Very high cycle fatigue of a nickel-based superalloy at room and elevated temperatures

T2 - Interior failure behavior and life prediction

AU - Li, Xiaolong

AU - Zhang, Yucheng

AU - Li, Wei

AU - Zhou, Siqi

AU - Sun, Rui

AU - Li, Cheng

AU - Wang, Ping

AU - Sakai, Tatsuo

PY - 2021/10

Y1 - 2021/10

N2 - Asymmetric load tests at 25 °C & 750 °C were performed to clarify the high-cycle-fatigue and very-high-cycle-fatigue properties of a nickel-based superalloy at elevated temperature. The life at 750 °C is longer due to the interior failure with crystallographic facets. Moreover, due to the competition between temperature and vacuum effects, threshold values for small and long cracks, as well as the transition crack size, are all lower at elevated temperature. Finally, based on proposed crack nucleation life model, fatigue life is evaluated by using fatigue-index-parameter, and predicted results are within a factor of three with respect to experimental data.

AB - Asymmetric load tests at 25 °C & 750 °C were performed to clarify the high-cycle-fatigue and very-high-cycle-fatigue properties of a nickel-based superalloy at elevated temperature. The life at 750 °C is longer due to the interior failure with crystallographic facets. Moreover, due to the competition between temperature and vacuum effects, threshold values for small and long cracks, as well as the transition crack size, are all lower at elevated temperature. Finally, based on proposed crack nucleation life model, fatigue life is evaluated by using fatigue-index-parameter, and predicted results are within a factor of three with respect to experimental data.

KW - Elevated temperature effect

KW - Interior cracking

KW - Life prediction

KW - Nickel-based superalloy

KW - Very high cycle fatigue

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DO - 10.1016/j.ijfatigue.2021.106349

M3 - Article

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VL - 151

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106349

ER -

Very high cycle fatigue of a nickel-based superalloy at room and elevated temperatures: Interior failure behavior and life prediction

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Keywords

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