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

doi:10.1007/s11661-016-3552-1

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

Faculty of Engineering, Environment & Computing

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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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 language	English
Pages (from-to)	4128-4136
Number of pages	9
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	47
Issue number	8
Early online date	13 May 2016
DOIs	https://doi.org/10.1007/s11661-016-3552-1
Publication status	Published - Aug 2016

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

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PublishedFinal published version, 5.35 MBLicence: CC BY
PublishedFinal published version, 4.27 MBLicence: CC BY

Michael Fitzpatrick
- Vice-Chancellor's Office - Pro-Vice-Chancellor - Engineering, Environment and Computing
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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 journal › Article › peer-review

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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.",

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

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