Fretting fatigue behavior of surface modified biomedical titanium alloys

2010 ◽  
Vol 63 (2-3) ◽  
pp. 217-223 ◽  
Author(s):  
Aravind Vadiraj ◽  
M. Kamaraj
Keyword(s):  
Titanium Alloys ◽  
Fatigue Behavior ◽  
Fretting Fatigue ◽  
Surface Modified

Fretting Fatigue Studies of Surface Modified Biomedical Titanium Alloys

2007 ◽  
Vol 539-543 ◽  
pp. 681-686
Author(s):  
Aravind Vadiraj ◽  
M. Kamaraj
Keyword(s):  
Friction Coefficient ◽  
Titanium Alloys ◽  
Thermal Oxidation ◽  
Fatigue Damage ◽  
Plasma Nitriding ◽  
Normal Pressure ◽  
Fretting Fatigue ◽  
Laser Nitriding ◽  
Surface Modified

Fretting fatigue is a form of adhesive wear damage caused due to tangential micro motion of two contact bodies under normal pressure and cyclic load. Biomedical implants such as hip joints and bone plates undergo fretting fatigue damage leading to premature in-vivo failure and revision surgeries. Surface modification of implants delays the process of fretting and thereby improves the life of these medical devices. This work involves investigation of fretting fatigue damage of surface treated titanium alloys couple. The surface treatment involves PVD TiN coating, Plasma nitriding, Ion Implantation, Laser nitriding and thermal oxidation. Fretting of all surface treated alloys have shown both adhesive and abrasive mode of contact damage. Friction coefficient of all the surface treated pairs is less compared to uncoated alloys. Plasma nitrided pairs have shown the best performance in terms of fretting fatigue life and friction coefficient compared to all other coatings. Ion implanted pairs have shown little improvement in fretting fatigue lives due to shallow modified layer. PVD TiN coated pairs have irregular friction pattern due to abrasive particles at contact. Thermal oxidation and Laser nitriding have shown poor fretting fatigue performance due to high case thickness.

Effect of surface modified layers on fretting fatigue damage of biomedical titanium alloys

2006 ◽  
Vol 22 (9) ◽  
pp. 1119-1125 ◽  
Author(s):  
A. Vadiraj ◽  
M. Kamaraj ◽  
U. Kamachi Mudali ◽  
A. K. Nath
Keyword(s):  
Titanium Alloys ◽  
Fatigue Damage ◽  
Fretting Fatigue ◽  
Surface Modified ◽  
Effect Of Surface

Influence of Stress Ratio and Contact Pressure on Fretting Fatigue Behavior of Modified 9Cr-1Mo Steel

2021 ◽  
Vol 30 (4) ◽  
pp. 2822-2831
Author(s):  
V. Shiva ◽  
Sunil Goyal ◽  
N. L. Parthasarathi ◽  
C. R. Das ◽  
R. Kannan ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Stress Ratio ◽  
Fatigue Behavior ◽  
Fretting Fatigue

Influence of Wear Properties on Fretting Fatigue Life of a CK45 Alloy and the Al7175 Alloy

2008 ◽  
Vol 587-588 ◽  
pp. 971-975 ◽  
Author(s):  
M. Buciumeanu ◽  
A.S. Miranda ◽  
F.S. Silva
Keyword(s):  
Wear Resistance ◽  
Fatigue Life ◽  
Material Properties ◽  
Fatigue Behavior ◽  
Synergetic Effect ◽  
Fretting Fatigue ◽  
Reduction Factor ◽  
Strength Reduction ◽  
Strength Reduction Factor ◽  
Wear Properties

The main objective of this work was to study the influence of the wear properties of two commercial alloys (CK45 and Al7175) on their fretting fatigue behavior. It is verified the effect of material local degradation by wear on a fatigue strength reduction factor, namely the stress concentration factor, and on the overall fretting fatigue life of these materials. The fretting fatigue phenomenon is a synergetic effect between wear and fatigue. It is dependent on both the fatigue and the wear properties of the materials. Material properties promoting an increase in wear resistance should enhance fretting fatigue life.

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