A study on hot extrusion of Ti-6Al-4V using simulations and experiments

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2415-2425
Journal / PublicationInternational Journal of Mechanical Sciences
Volume44
Issue number12
Publication statusPublished - Dec 2002

Abstract

Hot extrusion of Ti-6Al-4V alloy has been studied using finite element simulation and the results are compared with those obtained experimentally. First, the constitutive behavior of the material and friction at the extrusion temperatures are established based on the results obtained through cylindrical and ring compression tests, respectively. While the flow stress below β transus temperature is expressed as a strain-dependent function, it is taken as strain-independent one at higher temperatures. The distribution of strain, temperature and effective stress has been simulated under different design and processing conditions. Simulation results show that heat generation due to deformation is significant (as much as 160°C) in the hot extrusion of Ti alloys, and it mainly occurs at the beginning of the extrusion process. This leads to reduction in flow stress which, in turn, leads to enlarged deformation zone. A fair agreement has been found between the experimental results and those obtained through simulations. © 2003 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Constitutive equation, Extrusion, Friction, Simulation, Titanium alloy

Citation Format(s)

A study on hot extrusion of Ti-6Al-4V using simulations and experiments. / Li, L. X.; Rao, K. P.; Lou, Y. et al.

In: International Journal of Mechanical Sciences, Vol. 44, No. 12, 12.2002, p. 2415-2425.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review