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Journal of Applied Sciences
Year: 2013  |  Volume: 13  |  Issue: 18  |  Page No.: 3778 - 3781

Wear Mechanism of PVD Coated Carbide in High-Speed Turning of Titanium Alloy TA15

Minghai Wang, Xiaopeng Li and Wei Wang    

Abstract: PVD coatings (TiAlN) carbide cutting tools of titanium alloy (Ti-6.5Al-1Mo-1V-2Zr) turning test. Observation tool wear morphology using a scanning electron microscope (SEM), EDS analysisinstrument (EDS) analysis tool wear on the surface of the element distribution. analysis tool wear mechanism results show that: with PVD coating (TiAlN) carbide tool material turning titanium alloy Ti-6.5Al-1Mo-1V-2Zr, tool wear early main rake face crater wear and uniform flank wear, with the further wear of the tool, front and rear flank wear is connected to the formation of new irregular cutting edge, the front and rear of the coated cemented carbide cutting tool the flank coating flaking tool main wear mechanism is adhesive wear, oxidation and wear, diffusion wear which the oxidation wear occurs mainly in the edge region of the front and rear flank of the tool and since the temperature of the rake face of the cutting tool in the cutting process than after the flank cutting temperature adhesive wear, oxidation wear, diffusion wear phenomenon is more serious rake.

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