Machinability Investigation when Drilling Titanium Alloys

Main Authors: Rahim, Erween Abdul, Sharif, Safian, Ahmad, Zainal Abidin, Mohruni, Amrifan Saladin, Syed, Mat Isa
Format: Article PeerReviewed Book
Bahasa: eng
Terbitan: Japan Society of Mechanical Engineers (JSME),,Manufacturing and Machine Tool Division,Japan Society of Mechanical Engineers (JSME),,Manufacturing System Division , 2005
Subjects:
Online Access: http://repository.unsri.ac.id/24/1/LEM21%202005-compressed.pdf
http://repository.unsri.ac.id/24/
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Daftar Isi:
  • Investigation on the drilling of two alpha beta titanium alloy series, Ti-6Al-4V and Ti-5Al-4V-0.6Mo-0.4Fe was conducted using uncoated WC/Co carbide drill. Tool life, tool failure mode and surface integrity were examined when drilling both alloys at various cutting speeds. Results showed that Ti-6Al-4V exhibited a more superior machinability property in the drilling tests when compared to the Ti-5Al-4V-Mo/Fe alloy system. The tool wear progression when drilling Ti-6Al-4V was significantly lower than that of Ti-5Al-4VMo/Fe. Non uniform wear and chipping on the drill were the main tool failure modes when drilling both alloys. Examination on the microstructure of the sub-surface of the drilled surface, indicated that both materials suffered significant plastic deformation at all cutting speeds.