Microstructure and Properties of W-Cu Composites Fabricated by Laser Cladding Forming

Abstract:

In this paper, the rapid prototyping of W-Cu composites by laser cladding was reported. The influence of the mass ratio of W and Cu on the structure and properties were investigated. Ni and Co were added to the W-Cu composites to promote the sintering densification. The effect of the elements on the structure, phase composition and properties of W-Cu composites was investigated by using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDX) and hardness test. The results showed that when Cu content increases to 60 wt.%, W particles were distributed around Cu agglomerates. When Ni content increases to 3.0 wt.%, γ-Ni phase could be observed. It was found that Co was concentrated at the interface between W and Cu phase and enhance the diffusion of W in Cu phase. Both Ni and Co could increase the density of the W-Cu composites greatly.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 580-589
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.580
• Online since: March 2016
• Authors: Guang Yuan Wang*, Sai Nan Gu, Yuan Qin, Sen Yang
• Keywords: Laser Cladding, Particle Distribution, Relative Density, W-Cu Composite

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