Tool wear behaviour and workpiece surface integrity when turning Ti–6Al–2Sn–4Zr–6Mo with polycrystalline diamond tooling
作者： Cornelius J. Pretorius , Sein Leung Soo , David K. Aspinwall , Peter M. Harden , Rachid M'Saoubi
DOI: 10.1016/J.CIRP.2015.04.058
关键词: Cutting fluid 、 Edge (geometry) 、 Residual stress 、 Diamond 、 Materials science 、 Metallurgy 、 Surface integrity 、 Alloy 、 Tool wear 、 Grain size
摘要: Abstract The paper details the performance of a range polycrystalline diamond (PCD) tools (∼1.3–39 μm average grain size) when turning Ti–6Al–2Sn–4Zr–6Mo with 150 bar cutting fluid. alloy is used for aeroengine components such as turbine discs due to its superior mechanical and elevated temperature properties. Tool life improved from ∼30 80 min increasing size except ultra-coarse (∼39 μm) PCD grade, which failed via chipping/edge fracture after ∼8 min. In general, principal wear modes were crater formation workpiece adhesion. Workpiece integrity assessment showed no major subsurface damage surface compressive residual stresses ∼600 MPa.
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