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.
|出版ステータス||出版済み - 2001|
|イベント||SUPERALLOYS 718, 625, 706 and Various Derivatives - Pittsburgh, PA, 米国|
継続期間: 6 17 2001 → 6 20 2001
|その他||SUPERALLOYS 718, 625, 706 and Various Derivatives|
|Period||6/17/01 → 6/20/01|
All Science Journal Classification (ASJC) codes