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24 October 2017 Research on microstructure properties of the TiC/Ni-Fe-Al coating prepared by laser cladding technology
Junke Jiao, Zifa Xu, Shaoping Zan, Wenwu Zhang, Liyuan Sheng
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Proceedings Volume 10457, AOPC 2017: Laser Components, Systems, and Applications; 104570P (2017) https://doi.org/10.1117/12.2283070
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
In this paper, the laser cladding method was used to preparation the TiC reinforced Ni-Fe-Al coating on the Ni base superalloy. The Ti/Ni-Fe-Al powder was preset on the Ni base superalloy and the powder layer thickness is 0.5mm. A fiber laser was used the melting Ti/Ni-Fe-Al powder in an inert gas environment. The shape of the cladding layer was tested using laser scanning confocal microscope (LSCM) under different cladding parameters such as the laser power, the melting velocity and the defocused amount. The microstructure, the micro-hardness was tested by LSCM, SEM, Vickers hardness tester. The test result showed that the TiC particles was distributed uniformly in the cladding layer and hardness of the cladding layer was improved from 180HV to 320HV compared with the Ni-Fe-Al cladding layer without TiC powder reinforced, and a metallurgical bonding was produced between the cladding layer and the base metal. The TiC powder could make the Ni-Fe-Al cladding layer grain refining, and the more TiC powder added in the Ni-Fe-Al powder, the smaller grain size was in the cladding layer.
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Junke Jiao, Zifa Xu, Shaoping Zan, Wenwu Zhang, and Liyuan Sheng "Research on microstructure properties of the TiC/Ni-Fe-Al coating prepared by laser cladding technology", Proc. SPIE 10457, AOPC 2017: Laser Components, Systems, and Applications, 104570P (24 October 2017); https://doi.org/10.1117/12.2283070
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KEYWORDS
Cladding
Coating
Laser applications
Ceramics
Nickel
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