The effect of inclusion factors on fatigue life and fracture-mechanics-based life method for a P/M superalloy at elevated temperature

Yi Shi; Didi Yang; Xiaoguang Yang; Guolei Miao; Duoqi Shi; Shaolin Li; Xiaoan Hu; Fencheng Liu; Weiqing Huang

doi:10.1016/j.ijfatigue.2019.105365

The effect of inclusion factors on fatigue life and fracture-mechanics-based life method for a P/M superalloy at elevated temperature

Yi Shi, Didi Yang, Xiaoguang Yang^*, Guolei Miao, Duoqi Shi, Shaolin Li, Xiaoan Hu, Fencheng Liu, Weiqing Huang

^*Corresponding author for this work

School of Mechanical Engineering

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

42 Citations (Scopus)

Abstract

This paper studied the effect of inclusion factors on the fatigue life. of a P/M superalloy. Tests were conducted at 600 °C and fractographies were examined to identify the failure source. The degree of the detrimental effect on life was related to inclusion size, position and applied stress level. An explanation for these factors on fatigue life based on fracture mechanics was proposed. Inclusions were considered as crack and K_max calculation was correlated with inclusion position and shape. The small crack growth behaviour was also considered and good life prediction was obtained by integrating the rate equation with initial defect size.

Original language	English
Article number	105365
Journal	International Journal of Fatigue
Volume	131
DOIs	https://doi.org/10.1016/j.ijfatigue.2019.105365
Publication status	Published - Feb 2020

Keywords

Crack growth
Fracture mechanics
Inclusion
Life prediction
Small crack

Access to Document

10.1016/j.ijfatigue.2019.105365

Cite this

@article{394637514291498a8b0f7570c011a66e,

title = "The effect of inclusion factors on fatigue life and fracture-mechanics-based life method for a P/M superalloy at elevated temperature",

abstract = "This paper studied the effect of inclusion factors on the fatigue life. of a P/M superalloy. Tests were conducted at 600 °C and fractographies were examined to identify the failure source. The degree of the detrimental effect on life was related to inclusion size, position and applied stress level. An explanation for these factors on fatigue life based on fracture mechanics was proposed. Inclusions were considered as crack and Kmax calculation was correlated with inclusion position and shape. The small crack growth behaviour was also considered and good life prediction was obtained by integrating the rate equation with initial defect size.",

keywords = "Crack growth, Fracture mechanics, Inclusion, Life prediction, Small crack",

author = "Yi Shi and Didi Yang and Xiaoguang Yang and Guolei Miao and Duoqi Shi and Shaolin Li and Xiaoan Hu and Fencheng Liu and Weiqing Huang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = feb,

doi = "10.1016/j.ijfatigue.2019.105365",

language = "English",

volume = "131",

journal = "International Journal of Fatigue",

issn = "0142-1123",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - The effect of inclusion factors on fatigue life and fracture-mechanics-based life method for a P/M superalloy at elevated temperature

AU - Shi, Yi

AU - Yang, Didi

AU - Yang, Xiaoguang

AU - Miao, Guolei

AU - Shi, Duoqi

AU - Li, Shaolin

AU - Hu, Xiaoan

AU - Liu, Fencheng

AU - Huang, Weiqing

PY - 2020/2

Y1 - 2020/2

N2 - This paper studied the effect of inclusion factors on the fatigue life. of a P/M superalloy. Tests were conducted at 600 °C and fractographies were examined to identify the failure source. The degree of the detrimental effect on life was related to inclusion size, position and applied stress level. An explanation for these factors on fatigue life based on fracture mechanics was proposed. Inclusions were considered as crack and Kmax calculation was correlated with inclusion position and shape. The small crack growth behaviour was also considered and good life prediction was obtained by integrating the rate equation with initial defect size.

AB - This paper studied the effect of inclusion factors on the fatigue life. of a P/M superalloy. Tests were conducted at 600 °C and fractographies were examined to identify the failure source. The degree of the detrimental effect on life was related to inclusion size, position and applied stress level. An explanation for these factors on fatigue life based on fracture mechanics was proposed. Inclusions were considered as crack and Kmax calculation was correlated with inclusion position and shape. The small crack growth behaviour was also considered and good life prediction was obtained by integrating the rate equation with initial defect size.

KW - Crack growth

KW - Fracture mechanics

KW - Inclusion

KW - Life prediction

KW - Small crack

UR - http://www.scopus.com/inward/record.url?scp=85075403241&partnerID=8YFLogxK

U2 - 10.1016/j.ijfatigue.2019.105365

DO - 10.1016/j.ijfatigue.2019.105365

M3 - Article

AN - SCOPUS:85075403241

SN - 0142-1123

VL - 131

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 105365

ER -

The effect of inclusion factors on fatigue life and fracture-mechanics-based life method for a P/M superalloy at elevated temperature

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this