The effect of hot deformation parameters on microstructure evolution of the α-Phase in Ti-6Al-4V

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • The Open University
  • Coventry University

Abstract

The effect of high-temperature deformation and the influence of hot working parameters on microstructure evolution during isothermal hot forging of Ti-6Al-4V in the alpha phase field were investigated. A series of hot isothermal axis-symmetric compression tests were carried out at temperatures both low and high in the alpha stability field [(1153 K and 1223 K (880 °C and 950 °C), respectively], using three strain rates (0.01, 0.1 and 1.0/s) relevant to industrial press forging. The microstructures and orientation of the alpha laths were determined using optical microscopy and electron backscatter diffraction techniques. The experimental results show that there is a change in lath morphology of the secondary α phase under the influence of the deformation parameters, and that α lath thickness appears to have little influence on flow behavior.

Details

Original languageEnglish
Pages (from-to)4128-36
Number of pages9
JournalMetallurgical and Materials Transactions A
Volume47
Issue number8
Early online date13 May 2016
Publication statusPublished - Aug 2016