Investigation of Fatigue Behaviour and Notch Sensitivity of Ti-6Al-4V


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In this research, fatigue behaviour of Ti-6Al-4V alloy was investigated for smooth and notched specimens with stress concentration factor(Kt) 3.6 and 4.1. This investigation was conducted for various diameter bars having different ultimate strength.Rotating bending fatigue test at R= -1 was emploied for this research. Notch sensitivity data was compared with those of steels. The result indicated that the presence of notch in this alloy has a different amount of sensitivity when the notch specimens were subjected to high cycle fatigue (HCF) and low cycle fatigue(LCF) tests.The notch sensitivity of this alloy was shown generally to be much lower than steel alloys with similar ultimate strength values. Therefore,considering the low sensitivity to notch of this alloy, can be recommended for applications with the presence of notch such as biomedical application



Edited by:

Linli Xu, Wenya Tian and Elwin Mao




S. Hosseini and M. B. Limooei, "Investigation of Fatigue Behaviour and Notch Sensitivity of Ti-6Al-4V", Applied Mechanics and Materials, Vols. 80-81, pp. 7-12, 2011

Online since:

July 2011