Fatigue crack growth behavior of spray formed GH738 alloy

Dong Ye Yang; Fu Yang Cao; Wen Yong Xu; Xin Zuo; Zhou Li; Guo Qing Zhang; Jian Fei Sun

doi:10.11868/j.issn.1001-4381.2014.07.011

Fatigue crack growth behavior of spray formed GH738 alloy

Dong Ye Yang
, Fu Yang Cao
, Wen Yong Xu
, Xin Zuo
, Zhou Li
, Guo Qing Zhang
, Jian Fei Sun^*

^*Corresponding author for this work

School of Materials Science and Engineering

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

2 Scopus citations

Abstract

The fatigue crack growth tests of spray formed GH738 superalloy with compact tension (CT) specimens were carried out at different temperatures, loading frequency and R-ratios. The effects of temperatures, loading frequency and R-ratios on fatigue crack growth behaviors were investigated .The results show that the crack propagation rate increases with the increase of temperature; Fatigue crack propagation increases with the decrease of loading frequency; Fatigue crack growth rate da/dN is also found to increase with the larger R-ratios. The crack initiates multi-sites, and the fatigue fracture individually exhibits a series of fatigue striations mode in the crack steady growth region.

Original language	English
Pages (from-to)	55-59
Number of pages	5
Journal	Journal of Materials Engineering
Issue number	7
DOIs	https://doi.org/10.11868/j.issn.1001-4381.2014.07.011
State	Published - Jul 2014

Keywords

Fatigue crack growth
GH738
Spray formed

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10.11868/j.issn.1001-4381.2014.07.011

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title = "Fatigue crack growth behavior of spray formed GH738 alloy",

abstract = "The fatigue crack growth tests of spray formed GH738 superalloy with compact tension (CT) specimens were carried out at different temperatures, loading frequency and R-ratios. The effects of temperatures, loading frequency and R-ratios on fatigue crack growth behaviors were investigated .The results show that the crack propagation rate increases with the increase of temperature; Fatigue crack propagation increases with the decrease of loading frequency; Fatigue crack growth rate da/dN is also found to increase with the larger R-ratios. The crack initiates multi-sites, and the fatigue fracture individually exhibits a series of fatigue striations mode in the crack steady growth region.",

keywords = "Fatigue crack growth, GH738, Spray formed",

author = "Yang, \{Dong Ye\} and Cao, \{Fu Yang\} and Xu, \{Wen Yong\} and Xin Zuo and Zhou Li and Zhang, \{Guo Qing\} and Sun, \{Jian Fei\}",

year = "2014",

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doi = "10.11868/j.issn.1001-4381.2014.07.011",

language = "英语",

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journal = "Journal of Materials Engineering",

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T1 - Fatigue crack growth behavior of spray formed GH738 alloy

AU - Yang, Dong Ye

AU - Cao, Fu Yang

AU - Xu, Wen Yong

AU - Zuo, Xin

AU - Li, Zhou

AU - Zhang, Guo Qing

AU - Sun, Jian Fei

PY - 2014/7

Y1 - 2014/7

N2 - The fatigue crack growth tests of spray formed GH738 superalloy with compact tension (CT) specimens were carried out at different temperatures, loading frequency and R-ratios. The effects of temperatures, loading frequency and R-ratios on fatigue crack growth behaviors were investigated .The results show that the crack propagation rate increases with the increase of temperature; Fatigue crack propagation increases with the decrease of loading frequency; Fatigue crack growth rate da/dN is also found to increase with the larger R-ratios. The crack initiates multi-sites, and the fatigue fracture individually exhibits a series of fatigue striations mode in the crack steady growth region.

AB - The fatigue crack growth tests of spray formed GH738 superalloy with compact tension (CT) specimens were carried out at different temperatures, loading frequency and R-ratios. The effects of temperatures, loading frequency and R-ratios on fatigue crack growth behaviors were investigated .The results show that the crack propagation rate increases with the increase of temperature; Fatigue crack propagation increases with the decrease of loading frequency; Fatigue crack growth rate da/dN is also found to increase with the larger R-ratios. The crack initiates multi-sites, and the fatigue fracture individually exhibits a series of fatigue striations mode in the crack steady growth region.

KW - Fatigue crack growth

KW - GH738

KW - Spray formed

UR - https://www.scopus.com/pages/publications/84905095749

U2 - 10.11868/j.issn.1001-4381.2014.07.011

DO - 10.11868/j.issn.1001-4381.2014.07.011

M3 - 文章

AN - SCOPUS:84905095749

SN - 1001-4381

SP - 55

EP - 59

JO - Journal of Materials Engineering

JF - Journal of Materials Engineering

IS - 7

ER -

Fatigue crack growth behavior of spray formed GH738 alloy

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Keywords

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