Machinability of Al-SiC metal matrix composites using WC, PCD and MCD inserts

Authors

  • Jokin Beristain IK4-Tekniker
  • Oscar Gonzalo IK4-Tekniker
  • Alejandro Sandá IK4-Tekniker

DOI:

https://doi.org/10.3989/revmetalm.006

Keywords:

Metal-matrix composites (MMCs), Machining, Particle-reinforcement, Turning, Wear

Abstract


The aim of this work is the study of the machinability of aluminium-silicon carbide Metal Matrix Composites (MMC) in turning operations. The cutting tools used were hard metal (WC) with and without coating, different grades and geometries of Poly-Crystalline Diamond (PCD) and Mono-Crystalline Diamond (MCD). The work piece material was AMC225xe, composed of aluminium-copper alloy AA 2124 and 25% wt of SiC, being the size of the SiC particles around 3 μm. Experiments were conducted at various cutting speeds and cutting parameters in facing finishing operations, measuring the surface roughness, cutting forces and tool wear. The worn surface of the cutting tool was examined by Scanning Electron Microscope (SEM). It was observed that the Built Up Edge (BUE) and stuck material is higher in the MCD tools than in the PCD tools. The BUE acts as a protective layer against abrasive wear of the tool.

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Published

2014-03-30

How to Cite

Beristain, J., Gonzalo, O., & Sandá, A. (2014). Machinability of Al-SiC metal matrix composites using WC, PCD and MCD inserts. Revista De Metalurgia, 50(1), e006. https://doi.org/10.3989/revmetalm.006

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