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Metals 2017, 7(5), 175; doi:10.3390/met7050175

Microstructure and Properties of the Interface Area in the Laser Cladded Ni Based Coatings on the 1Cr10Mo1NiWVNbN Steel

School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China
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Academic Editor: Håkan Hallberg
Received: 21 January 2017 / Revised: 14 April 2017 / Accepted: 10 May 2017 / Published: 15 May 2017
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Abstract

The Ni-based coatings were deposited on the 1Cr10Mo1NiWVNbN steel by using laser cladding process. The microstructure and properties of the coatings interface area were investigated by OM (Optical Microscopy), SEM (Scanning Electron Microscope), XRD (X-Ray Diffraction) microhardness test and EDS (Energy Spectrum Analysis) analysis. The results show that the bonding condition of the coatings interface is different in the monolayer and the trilayer. The monolayer coatings have a small dilution area. The dilution rate in a coating layer increases by layers. The scale of ferrite (α) phase increases with the layer increases. The surface cladding quality of a monolayer is better than that of the trilayer coatings. The width of the interface increases with the increase of the layer. The width of the interface region in the trilayer coatings increases significantly. The microhardness of the interface zone is much higher than that in the coatings zone and the substrate zone. The microhardness of trilayer coatings is higher than that of the monolayer. View Full-Text
Keywords: coatings; laser cladding; Ni-based powder; microstructure; properties coatings; laser cladding; Ni-based powder; microstructure; properties
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MDPI and ACS Style

Chen, Y.; Guo, Y.; Lu, B.; Xu, M.; Xu, J. Microstructure and Properties of the Interface Area in the Laser Cladded Ni Based Coatings on the 1Cr10Mo1NiWVNbN Steel. Metals 2017, 7, 175.

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