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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.10 P.727-737


Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime

Author(s):  Xian-feng Ma, Zheng Duan, Hui-ji Shi, Ryosuke Murai, Eiichi Yanagisawa

Affiliation(s):  Applied Mechanics Laboratory, Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, China, Mitsubishi Heavy Industries, Ltd., Tokyo, Japan

Corresponding email(s):   maxianfeng@gmail.com, shihj@mail.tsinghua.edu.cn

Key Words:  Nickel-based superalloy, High cycle fatigue (HCF), Fatigue crack initiation, Crack growth, Life prediction

Xian-feng Ma, Zheng Duan, Hui-ji Shi, Ryosuke Murai, Eiichi Yanagisawa. Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime[J]. Journal of Zhejiang University Science A, 2010, 11(10): 727-737.

@article{title="Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime",
author="Xian-feng Ma, Zheng Duan, Hui-ji Shi, Ryosuke Murai, Eiichi Yanagisawa",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime
%A Xian-feng Ma
%A Zheng Duan
%A Hui-ji Shi
%A Ryosuke Murai
%A Eiichi Yanagisawa
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 10
%P 727-737
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000171

T1 - Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime
A1 - Xian-feng Ma
A1 - Zheng Duan
A1 - Hui-ji Shi
A1 - Ryosuke Murai
A1 - Eiichi Yanagisawa
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 10
SP - 727
EP - 737
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000171

The fatigue and fracture behavior of nickel-based superalloy Inconel 718 was investigated up to the very high cycle regime under rotary bending tests at room temperature. It was found that this superalloy can still fracture after exceeding 107 cycles. Fractographic analysis revealed that there was a transition from fatigue crack initiation at multi-sites to single initiation with decreasing stress levels. The fracture surface can be divided into four areas according to the appearance, associated with fracture mechanics analysis of the corresponding stress intensity factors. The fracture mechanism dominant in each area was disclosed by scanning electron microscope examination and analyzed in comparison with those obtained from the crack growth tests. Subsequently, life prediction modeling was proposed by estimating the crack initiation and propagation stage respectively. It was found that Chan (2003)’s model for initiation life and the Paris law for growth life can provide comparable predictions against the experimental life.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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