Tool wear behaviour and workpiece surface integrity when turning Ti-6Al-2Sn-4Zr-6Mo with polycrystalline diamond tooling

Cornelius Pretorius; Sein Soo; David Aspinwall; Peter Harden; Rachid M'Saoubi; Andrew L. Mantle

doi:10.1016/j.cirp.2015.04.058

Tool wear behaviour and workpiece surface integrity when turning Ti-6Al-2Sn-4Zr-6Mo with polycrystalline diamond tooling

Cornelius Pretorius, Sein Soo, David Aspinwall, Peter Harden, Rachid M'Saoubi, Andrew L. Mantle

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Abstract

The paper details the performance of a range of polycrystalline diamond (PCD) tools (∼1.3-39 μm average diamond grain size) when turning Ti-6Al-2Sn-4Zr-6Mo with 150 bar cutting fluid. The alloy is used for aeroengine components such as turbine discs due to its superior mechanical and elevated temperature properties. Tool life improved from ∼30 to 80 min with increasing grain size except with the ultra-coarse (∼39 μm) PCD grade, which failed via chipping/edge fracture after ∼8 min. In general, the principal wear modes were crater formation and workpiece adhesion. Workpiece integrity assessment showed no major subsurface damage with surface compressive residual stresses of ∼600 MPa.

Original language	English
Pages (from-to)	109-112
Number of pages	4
Journal	CIRP Annals - Manufacturing Technology
Volume	64
Issue number	1
Early online date	4 May 2015
DOIs	https://doi.org/10.1016/j.cirp.2015.04.058
Publication status	Published - 15 Jul 2015

Keywords

Surface integrity
Wear
titanium

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title = "Tool wear behaviour and workpiece surface integrity when turning Ti-6Al-2Sn-4Zr-6Mo with polycrystalline diamond tooling",

abstract = "The paper details the performance of a range of polycrystalline diamond (PCD) tools (∼1.3-39 μm average diamond grain size) when turning Ti-6Al-2Sn-4Zr-6Mo with 150 bar cutting fluid. The alloy is used for aeroengine components such as turbine discs due to its superior mechanical and elevated temperature properties. Tool life improved from ∼30 to 80 min with increasing grain size except with the ultra-coarse (∼39 μm) PCD grade, which failed via chipping/edge fracture after ∼8 min. In general, the principal wear modes were crater formation and workpiece adhesion. Workpiece integrity assessment showed no major subsurface damage with surface compressive residual stresses of ∼600 MPa.",

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AU - Pretorius, Cornelius

AU - Soo, Sein

AU - Aspinwall, David

AU - Harden, Peter

AU - M'Saoubi, Rachid

AU - Mantle, Andrew L.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - The paper details the performance of a range of polycrystalline diamond (PCD) tools (∼1.3-39 μm average diamond grain size) when turning Ti-6Al-2Sn-4Zr-6Mo with 150 bar cutting fluid. The alloy is used for aeroengine components such as turbine discs due to its superior mechanical and elevated temperature properties. Tool life improved from ∼30 to 80 min with increasing grain size except with the ultra-coarse (∼39 μm) PCD grade, which failed via chipping/edge fracture after ∼8 min. In general, the principal wear modes were crater formation and workpiece adhesion. Workpiece integrity assessment showed no major subsurface damage with surface compressive residual stresses of ∼600 MPa.

AB - The paper details the performance of a range of polycrystalline diamond (PCD) tools (∼1.3-39 μm average diamond grain size) when turning Ti-6Al-2Sn-4Zr-6Mo with 150 bar cutting fluid. The alloy is used for aeroengine components such as turbine discs due to its superior mechanical and elevated temperature properties. Tool life improved from ∼30 to 80 min with increasing grain size except with the ultra-coarse (∼39 μm) PCD grade, which failed via chipping/edge fracture after ∼8 min. In general, the principal wear modes were crater formation and workpiece adhesion. Workpiece integrity assessment showed no major subsurface damage with surface compressive residual stresses of ∼600 MPa.

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KW - Wear

KW - titanium

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DO - 10.1016/j.cirp.2015.04.058

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JO - CIRP Annals - Manufacturing Technology

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Tool wear behaviour and workpiece surface integrity when turning Ti-6Al-2Sn-4Zr-6Mo with polycrystalline diamond tooling

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Keywords

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