Crater wear mechanisms of TiN coated high speed steel tools

Citation
Cyh. Lim et al., Crater wear mechanisms of TiN coated high speed steel tools, SURF ENG, 16(3), 2000, pp. 253-256
Citations number
32
Categorie Soggetti
Material Science & Engineering
Journal title
SURFACE ENGINEERING
ISSN journal
02670844 → ACNP
Volume
16
Issue
3
Year of publication
2000
Pages
253 - 256
Database
ISI
SICI code
0267-0844(2000)16:3<253:CWMOTC>2.0.ZU;2-3
Abstract
This paper examines the crater wear characteristics of TiN coated high spee d steel tool inserts during dry turning of steel workpieces over a wide ran ge of machining conditions. Scanning electron microscopy shows that crackin g and attrition of the TiN coating on the rake face result in coating loss soon after machining begins. The subsequent wear of the exposed high speed steel substrate occurs via attrition, diffusion, and high temperature shear . A wear mechanism map linking the observed crater wear mechanisms to machi ning conditions reveals that transitions from one dominant mechanism to ano ther may be related to variations in measured tool wear rates.