SYMPOSIA PAPER Published: 01 January 1998
STP15740S

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

Source

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.

Author Information

Jawaid, A
Coventry University, Coventry, England
Olajire, KA
Coventry University, Coventry, England
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Details
Developed by Committee: G02
Pages: 71–85
DOI: 10.1520/STP15740S
ISBN-EB: 978-0-8031-5394-3
ISBN-13: 978-0-8031-2603-9