Formation of TiC0.3N0.7/TiN Composite Film on Ti-6Al-4V Alloy by YAG Laser Irradiation

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Abstract:

TiC0.3N0.7/TiN composite film was successfully formed on the surface of Ti-6Al-4V alloy by the treatment of YAG laser irradiation. In this paper an influence of laser output power on microstructure, chemical composition, element distribution and hardness, which were separately analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), electron probe micro-analyzer (EPMA) and nanoindentation hardness test, was investigated. Results showed that cross-section microstructure as-observed near the surface can be divided into three areas which were TiC0.3N0.7/TiN composite film, acicular structure and coarsening area, respectively. With increasing the output power, the thickness and the hardness of the TiC0.3N0.7/TiN layer were significantly improved.

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Advanced Materials Research (Volumes 941-944)

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2202-2206

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June 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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