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Microstructure and Properties of Laser Clad Nonmagnetic WC-FeNiCr Metal-Matrix Composite Coating

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Abstract:

Nonmagnetic metal-matrix composite (MMC) coatings were fabricated by laser cladding with direct injection of WC-FeNiCr powder onto the N1310 nonmagnetic steel matrix. Laser cladding was conducted using a Trumpf6000 CO2 laser. The WC-FeNiCr MMCs coating was characterized using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The phase constitution in the laser cladding was identified by x-ray diffraction (XRD). No pores or macro-cracks have been found at the interface indicating good metallurgical bonding between the coating and the N1310 nonmagnetic steel matrix. Magnetic measurements were carried out with vibrating sample magnetometer (VSM) at room temperature. The MMC coating was nonmagnetic and with a relative permeability of 1.004. The XRD analysis confirmed the presence of an austenitic γ-(Fe, Ni), Cr0.19Fe0.7Ni0.11, Fe3W3C, WC and W2C phases in the laser clad layer.

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Periodical:

Advanced Materials Research (Volumes 476-478)

Pages:

2368-2373

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.2368

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Online since:

February 2012

Authors:

Jiao Xi Yang, Xuan He Miao, Fa Lan Liu

Keywords:

Composite Coating, Laser Cladding, Magnetic Property, Microstructure

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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