Thermomechanical fatigue and life prediction method of a precision cast superalloy with electrical discharge machining drilled holes

Xing Song; Yun Jiang; Xiaoan Hu; Xiangfan Nie

doi:10.1016/j.ijfatigue.2022.107253

Thermomechanical fatigue and life prediction method of a precision cast superalloy with electrical discharge machining drilled holes

Xing Song
, Yun Jiang
, Xiaoan Hu
, Xiangfan Nie

Nanchang Hangkong University
Air Force Engineering University Xian

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

19 Scopus citations

Abstract

Thermomechanical fatigue behavior of a directional solidified superalloy was investigated. Circular holes were designed on the specimen manufactured by precision cast method. The results indicated that the TMF damage is mainly controlled by fatigue, creep and oxidation damage, and the stress concentration at the holes results in crack nucleation and final failure. A new TMF life prediction method for specimens with stress concentration is proposed. The stress gradient is introduced to consider the effect of stress concentration at hole and notch in this method, which is verified by TMF data of smooth, notched and hole specimens.

Original language	English
Article number	107253
Journal	International Journal of Fatigue
Volume	166
DOIs	https://doi.org/10.1016/j.ijfatigue.2022.107253
State	Published - Jan 2023
Externally published	Yes

Keywords

Electrical discharge machining drilled holes
Nickel-based superalloy
TMF life prediction
Thermomechanical fatigue

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10.1016/j.ijfatigue.2022.107253

Cite this

@article{e0e93c5598904ec69a16dd71447e5f91,

title = "Thermomechanical fatigue and life prediction method of a precision cast superalloy with electrical discharge machining drilled holes",

abstract = "Thermomechanical fatigue behavior of a directional solidified superalloy was investigated. Circular holes were designed on the specimen manufactured by precision cast method. The results indicated that the TMF damage is mainly controlled by fatigue, creep and oxidation damage, and the stress concentration at the holes results in crack nucleation and final failure. A new TMF life prediction method for specimens with stress concentration is proposed. The stress gradient is introduced to consider the effect of stress concentration at hole and notch in this method, which is verified by TMF data of smooth, notched and hole specimens.",

keywords = "Electrical discharge machining drilled holes, Nickel-based superalloy, TMF life prediction, Thermomechanical fatigue",

author = "Xing Song and Yun Jiang and Xiaoan Hu and Xiangfan Nie",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2023",

month = jan,

doi = "10.1016/j.ijfatigue.2022.107253",

language = "英语",

volume = "166",

journal = "International Journal of Fatigue",

issn = "0142-1123",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Thermomechanical fatigue and life prediction method of a precision cast superalloy with electrical discharge machining drilled holes

AU - Song, Xing

AU - Jiang, Yun

AU - Hu, Xiaoan

AU - Nie, Xiangfan

PY - 2023/1

Y1 - 2023/1

N2 - Thermomechanical fatigue behavior of a directional solidified superalloy was investigated. Circular holes were designed on the specimen manufactured by precision cast method. The results indicated that the TMF damage is mainly controlled by fatigue, creep and oxidation damage, and the stress concentration at the holes results in crack nucleation and final failure. A new TMF life prediction method for specimens with stress concentration is proposed. The stress gradient is introduced to consider the effect of stress concentration at hole and notch in this method, which is verified by TMF data of smooth, notched and hole specimens.

AB - Thermomechanical fatigue behavior of a directional solidified superalloy was investigated. Circular holes were designed on the specimen manufactured by precision cast method. The results indicated that the TMF damage is mainly controlled by fatigue, creep and oxidation damage, and the stress concentration at the holes results in crack nucleation and final failure. A new TMF life prediction method for specimens with stress concentration is proposed. The stress gradient is introduced to consider the effect of stress concentration at hole and notch in this method, which is verified by TMF data of smooth, notched and hole specimens.

KW - Electrical discharge machining drilled holes

KW - Nickel-based superalloy

KW - TMF life prediction

KW - Thermomechanical fatigue

UR - https://www.scopus.com/pages/publications/85138113123

U2 - 10.1016/j.ijfatigue.2022.107253

DO - 10.1016/j.ijfatigue.2022.107253

M3 - 文章

AN - SCOPUS:85138113123

SN - 0142-1123

VL - 166

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 107253

ER -

Thermomechanical fatigue and life prediction method of a precision cast superalloy with electrical discharge machining drilled holes

Abstract

Keywords

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