Affiliation:
1. University of Bergamo
2. Universitá di Modena e Reggio Emilia
Abstract
In this paper the fatigue behaviour of Ti-6Al-4V alloy coated with a TiN arc-deposited
PVD film was studied. Rotating bending tests (R = -1) were carried out on standard “hourglass”
specimens to evaluate the fatigue limit at 200000 load cycles. Conventional and notched (120° Vnotch
transversal to the rotating axis at the minimum cross section area) specimens were tested, both
coated and uncoated, to investigate the effect of the coating on the fatigue limit of the titanium
alloy, with and without the surface notch. Fracture surfaces were observed by SEM. The coating did
not improve the titanium alloy fatigue life.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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