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Tool failure modes and wear mechanism of coated carbide tools when drilling Ti-6AI-4V

Rahim, E. A. and Shariff, Safian (2007) Tool failure modes and wear mechanism of coated carbide tools when drilling Ti-6AI-4V. International Journal Precision Technology, 1 (1). pp. 30-39. ISSN 1755-2079 (Online) : 1755-2060 (Print)

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Abstract

This paper reports on the performance of TiAlN and Supernitride coated carbide tools when drilling titanium alloy, Ti-6Al-4V. Tool life, tool failure modes and tool wear mechanisms were examined at various cutting speeds of 25, 35, 45 and 55 m/min with a constant feed rate of 0.06 mm/rev. Results showed that Supernitride coated carbide tool outperformed TiAlN coated carbide tool at most cutting speeds investigated. Non-uniform flank wear, excessive chipping and microcracking were the dominant tool failure modes under most tested conditions. Adhesion, attrition and diffusion were the operating wear mechanism on both tools when drilling Ti-6Al-4V

Item Type:Article
Uncontrolled Keywords:drilling; tool wear; tool life; wear mechanisms; TiAIN; supernitride; coated carbide tools; titanium alloys; tool failure modes; cutting speed; feed rate; flank wear; chipping; microcracking
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:8779
Deposited By: Ms Zalinda Shuratman
Deposited On:12 May 2009 08:20
Last Modified:15 Jan 2014 04:39

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