Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13434
Title: Cavitation erosion behavior of laser gas nitrided Ti and Ti6Al4V alloy
Authors: Man, HC 
Cui, ZD
Yue, TM 
Cheng, FT
Keywords: Cavitation erosion
Laser gas nitriding
Surface hardness
Ti
Ti alloy
Issue Date: 2003
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2003, v. 355, no. 1-2, p. 167-173 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: A CW 2 kW neodymium-doped yttrium-aluminum-garnet (Nd-YAG) laser was used to carry out the gas nitriding process on commercial pure titanium and Ti6Al4V alloy. The microstructure, surface appearance, hardness depth profile and the cavitation erosion behavior of the nitrided samples in 3.5% NaCl solution were examined. The microstructure of the nitrided layer is mainly composed of TiN dendrites, of which the density gradually decreases towards the interface between the nitrided layer and the substrate. The cavitation erosion resistance of the nitrided samples was significantly improved as compared with the untreated samples. Increase in the surface hardness and the fine dendritic structure of the TiN layer contribute to the significantly enhanced cavitation erosion performance of Ti and Ti6Al4V alloy.
URI: http://hdl.handle.net/10397/13434
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/S0921-5093(03)00062-5
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