Open Access
ARTICLE
Fatigue Properties of Ti-6Al-4V Subjected to Simulated Body Fluid
Y.J. Liu1, Q.L. Ouyang2, R.H. Tian3, Q.Y. Wang4
1 Department of Mechanics and Engineering Science, Sichuan University, Chengdu, China
2 Luoyang LYC Bearing Co. Ltd, Luoyang, China
3 Department of Mechanics and Engineering Science, Sichuan University, Chengdu, China
4 Department of Mechanics and Engineering Science, Sichuan University, Chengdu, China
Structural Longevity 2009, 2(3), 169-175. https://doi.org/10.3970/sl.2009.002.169
Abstract
Fatigue properties of Ti-6Al-4V subjected to simulated body fluid (SBF)
environment were presented in this paper. Using the ultrasonic fatigue testing technique, the ultra-high cycle fatigue properties of Ti-6Al-4V alloy subjection to SBF
in two groups for two days and six days respectively in body temperature were
studied and the initiation mechanisms of fatigue cracks were investigated and analyzed with scanning electron microscopy (SEM) and energy dispersive atomic
X-ray (EDX). Then, a comparison with corresponding behaviors of the Ti-6Al-4V
alloy with no treatment was made. The results show that, the S-N curves of the Ti-
6Al-4V alloy after subjection have the similar tendency with that with no treatment,
that is, they descend continuously during 10
4
and 10
8
cycles and the descending
tendency is lower in the region of 10
7
-10
8
cycles; the life of the specimens after
subjection descends heavier before the fatigue life of 10
7
cycles and is lower after
the fatigue life of 10
7
cycles than that with no treatment; the life of the specimens
subjected for six days has little difference with that subjected for two days. Fatigue
failure initiates from internal inclusion where mostly the element Al aggregates at
the ultra-high cycle regime.
Keywords
Cite This Article
Liu, Y., Ouyang, Q., Tian, R., Wang, Q. (2009). Fatigue Properties of Ti-6Al-4V Subjected to Simulated Body Fluid.
Structural Longevity, 2(3), 169–175. https://doi.org/10.3970/sl.2009.002.169