The Effect of Hot Deformation Parameters on Microstructure Evolution of the α-Phase in Ti-6Al-4V

Bama Perumal, Martin A. Rist, Salih Gungor, Jeffery W. Brooks, Michael E. Fitzpatrick

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Pages (from-to)4128-4136
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume47
Issue number8
Early online date13 May 2016
DOIs
Publication statusPublished - Aug 2016

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forging
Hot working
Forging
hot working
microstructure
Microstructure
compression tests
Electron diffraction
strain rate
Optical microscopy
Strain rate
microscopy
Temperature
diffraction
electrons

Bibliographical note

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Keywords

  • Lamellar Microstructure
  • Alpha Phase
  • Flow Softening
  • Lath Morphology
  • Alpha Lamellar

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials

Cite this

The Effect of Hot Deformation Parameters on Microstructure Evolution of the α-Phase in Ti-6Al-4V. / Perumal, Bama; Rist, Martin A.; Gungor, Salih; Brooks, Jeffery W.; Fitzpatrick, Michael E.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 47, No. 8, 08.2016, p. 4128-4136.

Research output: Contribution to journalArticle

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