@inproceedings{3a007c0a663541cba76ec68baf7b4897,
title = "Characterization of the role of microstructure on the fatigue life of Ti-6Al-2Sn-4Zr-6Mo using ultrasonic fatigue",
abstract = "The effect of microstructural variability on the fatigue life of the a + β. titanium alloy, Ti-6246, has been examined in the very long life fatigue regime using ultrasonic fatigue. Tests were conducted at ambient temperatures at a frequency of 20 kHz and a load ratio of 0.05. Fatigue lifetimes were characterized in the regime from 105 to 109 cycles. Microstructural features associated with crack initiation and their locations relative to the specimen surface are examined and compared to the behavior observed in fatigue tests at a conventional frequency of 20 Hz. The growth behavior of small fatigue cracks initiated from femtosecond pulsed laser machining was examined. The worst-case fatigue life in Ti-6246 is modeled from the small crack propagation behavior of the alloy.",
keywords = "Crack Propagation, Fatigue Variability, Gigacycle Fatigue, Small Fatigue Cracks, Titanium alloys, Ultrasonic Fatigue",
author = "Szczepanski, {C. J.} and A. Shyam and Jha, {S. K.} and Torbet, {C. J.} and Johnson, {S. J.}",
year = "2005",
language = "English",
isbn = "0873395972",
series = "Materials Damage Prognosis - Proceedings of a Symposium of the Materials Science and Technology 2004 Conference",
pages = "315--320",
editor = "J.M. Larsen and L. Christodoulou and J.R. Calcaterra and M.L. Dent and M.M. Derriso and W.J. Hardman and {Wayne Jones}, J. and S.M. Rusa",
booktitle = "Materials Damage Prognosis - Proceedings of a Symposium sponsored by the Structural Materials Division of the TMS held during the Materials Science and Technology 2004 Conference",
note = "Materials Damage Prognosis - a Symposium of the Materials Science and Technology 2004 Conference ; Conference date: 26-09-2004 Through 30-09-2004",
}