NDLI: Cavitation Erosion of Laser-Nitrided Ti–6Al–4V Alloys with the Energy Controlled by the Pulse Duration

Content Provider	Springer Nature Link
Author	Mitelea, I. Dimian, E. Bordeaşu, I. Crăciunescu, C.
Copyright Year	2015
Abstract	The cavitation erosion of Ti–6Al–4V nitrided by Nd:YAG pulsed laser samples was investigated for different pulse durations. Hardness in the range of 1045–900HV0.2, was obtained for pulse duration ranging from 10 to 4 ms, respectively. All the Ti–6Al–4V nitrided samples showed a better cavitation erosion behavior compared to only annealed sample. The best behavior was observed for the sample nitrided with a 4-ms pulse and the weakest one 10-ms pulse. The harder nitride layer showed a brittle behavior during the process, leading to a reduced resistance during the cavitational attack. The more ductile surface of the annealed samples suffered a plastic deformation and the incipient damage generated by the cavitation bubbles lead to plastically deformed surface craters. By contrast, the nitrided samples with high hardness, low ductility and internal stresses increase the cracking sensibility and reduce the resistance to plastic deformation, leading to exfoliations in the brittle areas containing cracks.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	59
Issue Number	2
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2015-06-24
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Erosion Cavitation Ti alloys Laser Nitriding Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films Theoretical and Applied Mechanics Physical Chemistry Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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