Ultrasonic fatigue strength in Inconel 718

Q. Chen, N. Kawagoishi, K. Othubo, E. Kondo, M. Sakai, T. Kizaki

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


The fatigue strength of a nickel-base superalloy, Inconel 718, was investigated at room temperature under an ultrasonic frequency (19.5 kHz) loading in ambient air environment. The endurance (S-N) data show that fatigue strength was enhanced at ultrasonic frequency as compared to those at conventional frequencies. Small crack initiation and propagation behavior was observed during the fatigue progress at both ultrasonic fatigue and conventional rotary bending fatigue. The effect of frequency on the fatigue fracture mechanism was examined from a microscopic viewpoint.

Original languageEnglish
Number of pages10
Publication statusPublished - 2001
Externally publishedYes
EventSUPERALLOYS 718, 625, 706 and Various Derivatives - Pittsburgh, PA, United States
Duration: Jun 17 2001Jun 20 2001


OtherSUPERALLOYS 718, 625, 706 and Various Derivatives
Country/TerritoryUnited States
CityPittsburgh, PA

All Science Journal Classification (ASJC) codes

  • Metals and Alloys


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