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    Turning of High Strength Steel Alloy with PVD- and CVD-Coated Inserts

    Published: 01 January 1998

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    PVD TiN-coated(T1) and CVD Ti(C,N)/TiC/Al2O3-coated(T2) inserts were used to machine a high strength low-alloy(HSLA) steel to assess their performance. The single-layer PVD-coated insert gave comparable tool life results to the triple-layer CVD-coated insert due to better coating adhesion, finer grain size and lower cobalt content. Observed active failure modes at high cutting speeds and feed rate were mainly chipping/fracture on the minor cutting edge for T1 and excessive nose wear for T2. The wear mechanisms on the former were interfacial sliding, dissolution/diffusion, and attrition wear mechanisms, while the latter wore principally by interfacial sliding and plastic deformation.


    wear rate, wear mechanism, coated insert, steel alloy, failure mode

    Author Information:

    Jawaid, A
    Professor, Associate Dean of Engineering, Coventry University, Coventry,

    Olajire, KA
    Research student, Coventry University, Coventry,

    Committee/Subcommittee: G02.30

    DOI: 10.1520/STP15740S