首页|Evaluation of PVD Coated Tools' Life in Milling Ti6AI4V, based on Impact Tests at Ambient and Elevated Temperatures

Evaluation of PVD Coated Tools' Life in Milling Ti6AI4V, based on Impact Tests at Ambient and Elevated Temperatures

扫码查看
原文链接
  • NETL
  • NSTL
  • Trans Tech Publications Ltd
A methodology based on FEM-calculations and experimental tests for predicting coated tool efficiency in milling Ti6A14V by coated cemented carbide inserts is introduced. The used coatings were: (Ti,Al,Si)N and (Ti,Al)N films. The stress-strain curves and the fatigue critical loads of the coatings were determined by nanoindentations and impact tests respectively at various temperatures, employing FEM-supported procedures developed for results evaluation.The milling investigations were conducted at various cutting speeds. The stress and temperature fields in the cutting edge region were obtained by FEM calculations of the milling process. These results facilitated the explanation of the coated inserts' cutting performance versus the cutting speed.The cutting tests at various cutting speeds and the impact tests at ambient and elevated temperatures revealed that the tool life and the film impact resistance versus the temperature are not linear. Moreover, a sufficient correlation of the coatings' impact resistance at various temperatures with their cutting performance at corresponding cutting speeds was revealed. In this way, an adaption of the cutting conditions to the films' temperature-dependent strength can lead to a considerable cutting performance improvement.

PVD coatingsimpact resistancemilling Ti6AI4V

Nikolaos MICHAILIDIS、Konstantinos BOUZAKIS、Fritz KLOCKE、Martin WITTY、Eleftheria LILI、Stefanos GERARDIS、Maria PAPPA

展开 >

Fraunhofer Project Center Coatings in Manufacturing, in Centre for Research and Technology Hellas in Thessaloniki and in Fraunhofer Institute for Production Technology in Aachen-Germany

Laboratory for Machinetools and manufacturing Engineering, Aristoteles University of Thessaloniki, Thessaloniki, Greece Fraunhofer Project Center Coatings in Manufacturing, in Centre for Research and Technology Hellas in Thessaloniki and in Fraunhofer Institute for Production Technology in Aachen-Germany

Fraunhofer Institute for Production Technology (IPT), Aachen, Germany Fraunhofer Project Center Coatings in Manufacturing, in Centre for Research and Technology Hellas in Thessaloniki and in Fraunhofer Institute for Production Technology in Aachen-Germany

Fraunhofer Institute for Production Technology (IPT), Aachen, Germany

展开 >

2010

10.4028/www.scientific.net/KEM.438.187

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.438
  • 11