RT journal article
T1 Wear Mechanisms and Wear Model of Carbide Tools during Dry Drilling of CFRP/TiAl6V4 Stacks
A1 Alonso Pinillos, Unai
A1 Fernández Vidal, Severo Raúl
A1 Calamaz, Madalina
A1 Girot Mata, Franck Andrés
A2 Ingeniería Mecánica y Diseño Industrial
K1 carbide wear
K1 CFRP
K1 titanium alloy
K1 abrasion
K1 metal adhesion
AB The present contribution on tool wear during the drilling of carbon fiber composite materials(CFRP)/Ti stacks intends to determine (i) if the adhesion of titanium to carbide is mechanical orchemical, (ii) the possible di usion path, (iii) if the titanium is the only element involved in theadhesion and (iv) the role of the CFRP in this wear. The overall tool wear is not the sum of the wearin each material and there is a multiplicative e ect between them. It has been pointed out that themaximum temperature reached during drilling is higher than 180  C, 400  C and 750  C respectivelyin the CFRP and Ti plates alone and in the Ti part of the stack. As tungsten carbide CW is not inequilibrium with titanium above 250  C, the di usion path is CW/(Ti,W)C/Ti as confirmed by Augeranalysis. For temperatures above 500  C, (Ti,W)C becomes very sensitive to oxidation allowing afriable oxycarbide (Ti,C,O) to form, which explains the erosion of the tool. The CW is therefore theweakest link in the drilling of CFRP/Ti stacks. Improving the performance of the tool involves the useof a coating, the development of a tool material having low chemical a nity with Ti and/or the use ofcryogenic lubricant.
PB MDPI
SN 1996-1944
YR 2019
FD 2019-09
LK http://hdl.handle.net/10498/21851
UL http://hdl.handle.net/10498/21851
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026