SYMPOSIA PAPER Published: 01 January 1982
STP29401S

Effect of Ion Implantation on Fretting Fatigue in Ti-6Al-4V Alloy

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The effect of fretting on the fatigue life of titanium alloys is known to be severely deleterious. A preliminary study shows ion implantation to hold great promise for improving the fretting fatigue life in Ti-6Al-4V alloy.

Carbon implanted at 75 keV to a dose of 2 × 1017 atoms/cm2 gives a peak concentration of 30 atomic percent at a depth of approximately 1700 Å. Incoherent particles of titanium carbide averaging 100 Å in size were found by transmission electron microscopy. Fatigue specimens were subjected to fretting on one surface at a normal stress of 20.7 MPa. A significant improvement in lifetime was found. No difference in the mode of failure was observed between the implanted and the unimplanted specimens.

Author Information

Vardiman, RG
Material Science and Technology Division, Naval Research Laboratory, Washington, D.C.
Creighton, D
University of Missouri-Columbia, Columbia, Mo.
Salivar, G
University of Missouri-Columbia, Columbia, Mo. Pratt & Whitney, West Palm Beach, Fla.
Effatian, A
University of Missouri-Columbia, Columbia, Mo. G and H Technology, Inc., Santa Monica, Calif.
Rath, BB
Material Science and Technology Division, Naval Research Laboratory, Washington, D.C.
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Details
Developed by Committee: G02
Pages: 138–149
DOI: 10.1520/STP29401S
ISBN-EB: 978-0-8031-4844-4
ISBN-13: 978-0-8031-0829-5