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2024-03-28T12:24:01Z
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2015-11-05T11:11:57Z
2015-11-05T11:11:57Z
http://eprints.imtlucca.it/id/eprint/2811
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2015-11-05T11:11:57Z
Surface modification of titanium alloy with the Ti3Al + TiB2/TiN composite coatings
Laser cladding of the Ti3Al + TiB2 pre-placed alloy powder on the Ti–6Al–4 V alloy in nitrogen protective atmosphere can form the Ti3Al + TiB2/TiN composite coating, which can dramatically improve the wear resistance of the Ti–6Al–4 V alloy surface. In this study, the Ti3Al + TiB2/TiN composite coatings on the Ti–6Al–4 V alloy have been researched by means of X-ray diffraction, SEM and energy dispersive spectrometry. It was found that there is a metallurgical combination between the Ti3Al + TiB2/TiN composite coating and the substrate. The microhardness of the Ti3Al + TiB2/TiN composite coatings were 3 ~ 4 times higher than that of the Ti–6Al–4 V alloy because of the actions of the Ti3Al + TiB2/TiN hard phases and the grain refinement strengthening. Moreover, the wear mass losses of the Ti3Al + TiB2/TiN composite coatings were much lower than that of the substrate. Copyright © 2011 John Wiley & Sons, Ltd.
J. N. Li
C. Z. Chen
B. B. Cui
Tiziano Squartini
tiziano.squartini@imtlucca.it