Please wait a minute...
ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2010, Vol. 11 Issue (10): 727-737    DOI: 10.1631/jzus.A1000171
    
Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime
Xian-feng Ma, Zheng Duan, Hui-ji Shi, Ryosuke Murai, Eiichi Yanagisawa
Applied Mechanics Laboratory, Department of Engineering Mechanics, School of Aerospace, Tsinghua University, Beijing 100084, China, Mitsubishi Heavy Industries, Ltd., Tokyo, Japan
Download:     PDF (0 KB)     
Export: BibTeX | EndNote (RIS)      

Abstract  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.

Key words： Nickel-based superalloy      High cycle fatigue (HCF)      Fatigue crack initiation      Crack growth      Life prediction     
Received: 15 April 2010      Published: 05 October 2010
CLC:  TB3  
  V25  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Hui-ji Shi
Ryosuke Murai
Xian-feng Ma
Zheng Duan
Eiichi Yanagisawa
Cite this article:

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. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2010, 11(10): 727-737.

URL:

http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1000171     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2010/V11/I10/727

[1] Devi Chandra, Judha Purbolaksono, Yusoff Nukman, Haw-ling Liew, Singh Ramesh, Mohsen-abdel Hassan. Fatigue growth of a surface crack in a V-shaped notched round bar under cyclic tension[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2014, 15(11): 873-882.
[2] Xian-kui ZHU. J-integral resistance curve testing and evaluation[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(11): 1541-1560.
[3] Xun ZHOU, Xiao-li YU. Fatigue crack growth rate test using a frequency sweep method[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(3): 346-350.