Cycle-dependent creep-fatigue deformation and life predictions in a nickel-based superalloy at elevated temperature

Lv Yi Cheng; Run Zi Wang; Ji Wang; Shun Peng Zhu; Peng Cheng Zhao; Hideo Miura; Xian Cheng Zhang; Shan Tung Tu

doi:10.1016/j.ijmecsci.2021.106628

Cycle-dependent creep-fatigue deformation and life predictions in a nickel-based superalloy at elevated temperature

Lv Yi Cheng, Run Zi Wang, Ji Wang, Shun Peng Zhu, Peng Cheng Zhao, Hideo Miura, Xian Cheng Zhang, Shan Tung Tu

ENG - Fracture and Reliability Research Institute

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

21 Citations (Scopus)

Abstract

A series of strain-controlled creep-fatigue tests with various dwell times and strain ratios are carried out on a nickel-based superalloy at 650 °C. Aiming at the mechanical understanding of creep-fatigue behavior, a non-unified constitutive framework is used to describe macroscopic cyclic deformation process to understand creep-fatigue behavior. Afterward, the quantitative evaluation of creep-fatigue damage is quantitatively determined by the cycle-by-cycle strain energy density exhaustion (SEDE) approach. The effects of strain ratio and dwell time on creep-fatigue life endurances can be well revealed by the proposed life model, where all the data points are predicted within ± 1.5 error band. Particularly, life prediction capacities with long dwell times are further improved based on three-regime creep mechanism.

Original language	English
Article number	106628
Journal	International Journal of Mechanical Sciences
Volume	206
DOIs	https://doi.org/10.1016/j.ijmecsci.2021.106628
Publication status	Published - 2021 Sept 15

Keywords

Creep-fatigue
Dwell time
Life prediction
Non-unified model
Strain ratio

ASJC Scopus subject areas

Civil and Structural Engineering
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijmecsci.2021.106628

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title = "Cycle-dependent creep-fatigue deformation and life predictions in a nickel-based superalloy at elevated temperature",

abstract = "A series of strain-controlled creep-fatigue tests with various dwell times and strain ratios are carried out on a nickel-based superalloy at 650 °C. Aiming at the mechanical understanding of creep-fatigue behavior, a non-unified constitutive framework is used to describe macroscopic cyclic deformation process to understand creep-fatigue behavior. Afterward, the quantitative evaluation of creep-fatigue damage is quantitatively determined by the cycle-by-cycle strain energy density exhaustion (SEDE) approach. The effects of strain ratio and dwell time on creep-fatigue life endurances can be well revealed by the proposed life model, where all the data points are predicted within ± 1.5 error band. Particularly, life prediction capacities with long dwell times are further improved based on three-regime creep mechanism.",

keywords = "Creep-fatigue, Dwell time, Life prediction, Non-unified model, Strain ratio",

author = "Cheng, {Lv Yi} and Wang, {Run Zi} and Ji Wang and Zhu, {Shun Peng} and Zhao, {Peng Cheng} and Hideo Miura and Zhang, {Xian Cheng} and Tu, {Shan Tung}",

note = "Funding Information: This work was supported financially by the National Natural Science Foundation of China (Nos. 52005185 , 51725503 and 11972110 ), China Postdoctoral Science Foundation ( 2020M681200 ) and 111 Project. Wang RZ and Miura H also gratefully acknowledge the support of the Postdoctoral Fellowships for Research in Japan (FY2020 P20350) by the Japan Society for the Promotion of Science (JSPS). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.ijmecsci.2021.106628",

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AU - Cheng, Lv Yi

AU - Wang, Run Zi

AU - Wang, Ji

AU - Zhu, Shun Peng

AU - Zhao, Peng Cheng

AU - Miura, Hideo

AU - Zhang, Xian Cheng

AU - Tu, Shan Tung

N1 - Funding Information: This work was supported financially by the National Natural Science Foundation of China (Nos. 52005185 , 51725503 and 11972110 ), China Postdoctoral Science Foundation ( 2020M681200 ) and 111 Project. Wang RZ and Miura H also gratefully acknowledge the support of the Postdoctoral Fellowships for Research in Japan (FY2020 P20350) by the Japan Society for the Promotion of Science (JSPS). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/9/15

Y1 - 2021/9/15

N2 - A series of strain-controlled creep-fatigue tests with various dwell times and strain ratios are carried out on a nickel-based superalloy at 650 °C. Aiming at the mechanical understanding of creep-fatigue behavior, a non-unified constitutive framework is used to describe macroscopic cyclic deformation process to understand creep-fatigue behavior. Afterward, the quantitative evaluation of creep-fatigue damage is quantitatively determined by the cycle-by-cycle strain energy density exhaustion (SEDE) approach. The effects of strain ratio and dwell time on creep-fatigue life endurances can be well revealed by the proposed life model, where all the data points are predicted within ± 1.5 error band. Particularly, life prediction capacities with long dwell times are further improved based on three-regime creep mechanism.

AB - A series of strain-controlled creep-fatigue tests with various dwell times and strain ratios are carried out on a nickel-based superalloy at 650 °C. Aiming at the mechanical understanding of creep-fatigue behavior, a non-unified constitutive framework is used to describe macroscopic cyclic deformation process to understand creep-fatigue behavior. Afterward, the quantitative evaluation of creep-fatigue damage is quantitatively determined by the cycle-by-cycle strain energy density exhaustion (SEDE) approach. The effects of strain ratio and dwell time on creep-fatigue life endurances can be well revealed by the proposed life model, where all the data points are predicted within ± 1.5 error band. Particularly, life prediction capacities with long dwell times are further improved based on three-regime creep mechanism.

KW - Creep-fatigue

KW - Dwell time

KW - Life prediction

KW - Non-unified model

KW - Strain ratio

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Cycle-dependent creep-fatigue deformation and life predictions in a nickel-based superalloy at elevated temperature

Abstract

Keywords

ASJC Scopus subject areas

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